1 EEVblog #859 - Bypass / Decoupling Capacitor Tutorial
Dave Jones explains why decoupling capacitors are needed, how parasitics limit them, and why mixing values in parallel is not as simple as adding capacitance.
Audience
Some experience
You know the basics and want to go deeper.
2 [LIVE] How to Achieve Proper Grounding - Rick Hartley - Expert Live Training (US)
Rick Hartley's talk on grounding and return current paths in PCB design, praised as dense with practical EMC insight that formal courses often miss.
3 EEVblog #262 - World's Simplest Soft Latching Power Switch Circuit
Dave Jones presents a low part count soft latching power switch built around a P-channel MOSFET and push button; hobbyists use it as a starting point for one-button power control.
4 EEVblog #831 - Power A Micro With No Power Pin!
Demonstrates a microcontroller running through the protection diodes on its I/O pins with the supply pin disconnected; cited whenever a supposedly unpowered chip keeps working.
5 Ben Heck's LCD Hack Challenge
Ben Heck's attempt to drive a salvaged LCD panel, usually linked to show how hard reusing bare screens is and why buying one is easier.
6 EEVblog #221 - Lab Power Supply Design - Part 1
First part of Dave Jones's series designing a lab power supply with op-amp voltage and current regulation; recommended as an introduction to bench supply design.
7 #75: Basics of Opamp circuits - a tutorial on how to understand most opamp circuits
Alan Wolke's back-to-basics walkthrough of op amp circuits, recommended for understanding how the common configurations behave before building analogue stages.
8 EEVblog #317 - PCB Tinning Myth Busting
Dave Jones measures how much solder over exposed traces lowers resistance, finding roughly a 50 percent cut on 1 oz copper; cited for high current PCB traces.
9 EEVblog #176 - Lithium Ion/Polymer Battery Charging Tutorial
Dave Jones explains how lithium-ion and lithium-polymer cells are charged, including the constant-current and constant-voltage stages, for people building or choosing a charger.
10 How to reuse the old LCD Screen of your broken Laptop
Shows how to reuse a broken laptop's LCD panel by pairing it with a controller board; pointed to when people want a cheap screen for a Raspberry Pi.
11 EEVblog #110 - Let's Design a DC to DC Switchmode Converter
Dave Jones walks through designing a switch-mode supply around the MC34063, often pointed to as a hands-on introduction to buck and boost converters.
12 EEVblog #102 - DIY Constant Current Dummy Load for Power Supply and Battery Testing
Dave Jones builds a constant current dummy load from an op-amp, MOSFET and shunt resistor for testing supplies and batteries; a common starting design for DIY loads.
13 EEVBlog #1116 - How to Remove Power Supply Ripple
Dave Jones shows that linear regulators reject little high frequency ripple and demonstrates a capacitance multiplier as a cheap fix; a regular link in ripple filtering questions.
14 1-Day Project: Build Your Own Arduino Uno for $5
Julian Ilett builds a standalone ATmega328P Arduino for about five dollars, a common starting point for people making their own Arduino-compatible boards.
15 EEVblog #127 - PCB Design For Manufacture Tutorial - Part 1
First part of Dave Jones's PCB design for manufacture tutorial, full of practical tips such as solder mask pullback; usually recommended with part 2 for automated assembly.
16 EEVblog #1085 - Bypass Capacitors Visualised!
Dave Jones visualises bypass capacitor behaviour; usually linked alongside his bypass tutorial when people ask how to choose values and place decoupling capacitors.
17 EEVblog #105 - Electronics Thermal Heatsink Design Tutorial
Dave Jones's tutorial on calculating thermal resistance and sizing a heatsink, routinely linked when someone asks how hot a regulator or transistor will run.
18 #88: Cheap and simple TDR using an oscilloscope and 74AC14 Schmitt Trigger Inverter
Builds a simple fast-edge pulse generator from a Schmitt trigger inverter and uses it with an oscilloscope as a makeshift time domain reflectometer for cables.
19 Professional SMT Soldering: Hand Soldering Techniques - Surface Mount
A professional demonstration of drag soldering a fine-pitch surface mount chip, linked to show that small packages can be hand soldered with flux and a steady drag.
20 EEVblog #453 - Mysteries of x1 Oscilloscope Probes Revealed
Dave Jones explains how passive x1 scope probes work and why their bandwidth is far lower than x10; cited when fast signals look wrong through a switchable probe.
21 #79: Op Amp Power Supply Considerations: split, single, virtual ground, etc. - a tutorial
Alan Wolke compares split, single and virtual-ground supplies for op amps; people use it to work out how to bias inputs from a single battery.
22 EEVblog #167 - Atten 858D Hot Air Rework Review
Dave Jones reviews the budget Atten 858D hot air rework station; people cite it when choosing a first hot air tool for SMD work.
23 Ground in PCB Layout - Separate or Not Separate? (with Rick Hartley)
Widely cited interview with Rick Hartley on PCB grounding, often linked to argue for one solid ground plane rather than split analogue and digital grounds.
24 Teardown of an eBay 25A Solid State Relay. (SSR)
Big Clive opens a cheap eBay 25A solid state relay and finds a triac rated well below the label; cited when people ask what is inside these SSRs.
25 How to Control a Ton of Inputs using Shift Registers!
Explains how a shift register can scan many buttons or inputs from a handful of Arduino pins, sometimes linked alongside the same creator's output video.
26 EEVblog #490 - Peak Detector Circuit
Dave Jones builds peak detectors from a simple diode and capacitor up to precision op-amp versions; a frequent reference for envelope and pulse detection projects.
27 Build Your Own Portable Raspberry Pi (Part 1)
Ben Heck's portable Raspberry Pi build, cited for the cheap LCD he reuses, its voltage limits and the ports he removes from the board.
28 HowTo: Drag Soldering Demo
Short demonstration of drag soldering fine-pitch SMD pins with a bead of solder; answerers recommend it alongside the advice to use plenty of flux.
29 Dummy load in a bucket
Builds a cheap high-power dummy load from enamelled copper wire submerged in a bucket of water; people have copied it for battery and supply testing.
30 Raspberry Pi Laptop with Atrix 4G Dock
An Adafruit guide to turning a cheap Motorola Atrix Lapdock into a Raspberry Pi laptop, a frequent answer when portable Pi builds come up.
31 H Bridge Motor Speed Controller Tutorial
Afrotechmods explains a discrete MOSFET H-bridge motor speed controller; suggested for people moving beyond driver modules to understand the basics.
32 #190: Back to Basics: Transistor Current Sources and Mirrors
Alan Wolke explains discrete transistor current sources and mirrors, ending with LED driving and compliance voltage; suggested as an alternative to an LM317 current source.
33 EEVBlog #473 - Microcontroller Voltage Doubler
Dave Jones shows how a microcontroller's square-wave output can drive a charge pump to double its supply voltage; suggested when a small higher-voltage rail is needed.
34 EEVblog #594 - How To Measure Power Supply Ripple & Noise
Dave Jones covers measuring power supply ripple and noise with an oscilloscope; a 40 minute episode cited when probing switching converters shows misleading spikes.
35 Power Supply Design
Dave Jones's EEVblog series designing a precision bench power supply from scratch, valued for showing a working engineer's reasoning as much as the circuit itself.
36 EEVblog #506 - IR Remote Control Arduino Protocol Tutorial
Dave Jones captures an infrared remote's signal on a scope and reproduces it with an Arduino, recommended for understanding IR protocols and carrier modulation.
37 #207 Why most Arduino Soil Moisture Sensors suck (incl. solution)
Andreas Spiess explains why many cheap Arduino soil moisture sensors give poor readings and shows a fix; cited by people building or modifying capacitive sensor boards.
38 Make your own 10x10 LED Matrix
GreatScott's 10x10 LED matrix build using addressable LEDs, often held up as a good starting point for wall-mounted LED displays and backlit panels.
39 Circuit Energy doesn't FLOW the way you THINK!
Shared in debates about how energy actually travels in a circuit, giving a field based picture that complements the Veritasium discussion.
40 Engineering magnetics -- practical introduction to BH curve
Recommended as a practical grounding in magnetic cores and BH curves, aimed at inductor design but useful for anyone puzzled by ferrites and magnetism.
41 #114: Tutorial: Common Emitter, Common Collector, and Common Base Transistor amplifiers
A W2AEW video comparing the three basic BJT amplifier configurations, recommended for understanding gain and why common emitter is the usual choice.
42 EEVblog #568 - Solderless Breadboard Capacitance
Dave Jones measures the parasitic capacitance between solderless breadboard rows, cited when stray picofarads upset crystals, small capacitors or fast circuits.
43 Ball and Plate PID control with 6 DOF Stewart platform
A demonstration of an Arduino-driven Stewart platform balancing a ball, cited as a showpiece for PID and control-system projects rather than as a tutorial.
44 D/A and A/D | Digital Show and Tell (Monty Montgomery @ xiph.org)
Monty Montgomery demonstrates sampling and reconstruction on real equipment, widely cited on the Nyquist theorem and why CD-quality audio is enough.
45 #58 ESP8266 Sensor runs 17 days on a coin cell/transmits data (deep-sleep)
Andreas Spiess builds an ESP8266 sensor that runs 17 days on a coin cell using deep sleep; a common starting point for battery-powered Wi-Fi sensor projects.
46 How to Connect Raspberry Pi to a Laptop LCD Panel via LVDS/LCD Controller Board
Connects a Raspberry Pi to a salvaged laptop LCD panel through an LVDS controller board; offered as a basic example for people reusing old screens.
47 #193: Back to Basics: the differential amplifier, aka long-tailed pair, diff-pair
Alan Wolke gives a gentle introduction to the BJT differential pair and how it forms an op amp input stage; people build and simulate along with it.
48 LED cube 8x8x8 demo
A showcase of an 8x8x8 LED cube in action, linked as inspiration for ambitious LED projects and as an example of what multiplexing makes possible.
49 James Lewis - They're JUST Capacitors
A conference talk by Kemet's James Lewis comparing capacitor types, their weaknesses and derating, including how ceramic values drift with voltage and after reflow.
50 Using LEDs as mains indicator lights on 120V and 230V (live demos)
Big Clive demonstrates several ways to run an LED as a mains indicator on 120 V and 230 V, recommended when resistor-only circuits overheat or reverse voltage harms the LED.
51 8.02x - Lect 16 - Electromagnetic Induction, Faraday's Law, Lenz Law, SUPER DEMO
Walter Lewin's MIT lecture on induction, cited mainly as the source of the two-voltmeter experiment that ElectroBOOM disputes, and as a demonstration of Faraday's law.
52 #143: Transmission Line Terminations for Digital and RF signals - Intro/Tutorial
Alan Wolke demonstrates transmission line terminations and reflections on an oscilloscope, including standing waves on an unterminated line; people credit it with making reflections understandable.
53 EEVblog #469 - Cockcroft-Walton Multiplier
Dave Jones explains how a Cockcroft-Walton voltage multiplier works stage by stage; answerers link it instead of writing the explanation out again.
54 Review: 1W 350mA LED Driver with the elusive 6200 Chip
Linked when a cheap constant current LED driver module comes up, mainly for its demonstration of the module's PWM dimming input.
55 KiCad 6 STM32 PCB Design Full Tutorial - Phil's Lab #65
A long walkthrough of designing a custom STM32 microcontroller board, often suggested as a starting point for people moving beyond Arduino to their own PCB.
56 Raspberry Pi Tutorial 34 - Wireless Pi to Arduino Communication with NRF24L01+ Part 1
Part 1 of a tutorial linking a Raspberry Pi and an Arduino over nRF24L01+ radios; often cited by people following it who then ask for help.
57 EEVblog #742 - Why Electrolytic Capacitors Are Connected In Parallel
Dave Jones explains why designers use several electrolytic capacitors in parallel instead of one large one, mainly to lower ESR and spread the load.
58 EEVblog #1045 - How To Drive an LCD
Dave Jones explains the basics of driving a bare segment LCD from simple IO pins, recommended to people who have wired one up as if it were an LED display.
59 ESP8266 Wifi Range/Distance Tests (Wi07C)
CNLohr tests ESP8266 Wi-Fi range, including with an external antenna; cited as a benchmark when people's modules perform worse than expected.
60 Low Power Arduino! Deep Sleep Tutorial
Shows how to put an ATmega328 into deep sleep and wake it with interrupts or the watchdog, reaching microamp currents on a bare chip.
61 #170: Basics of IQ Signals and IQ modulation & demodulation - A tutorial
Alan Wolke explains IQ signals, modulation and demodulation with oscilloscope demonstrations; praised as one of the clearest introductions for people learning software-defined radio.
62 #84: Basics of Ferrite Beads: Filters, EMI Suppression, Parasitic oscillation suppression / Tutorial
Demonstrates how ferrite beads filter high-frequency noise, suppress EMI and damp parasitic oscillation; praised for clear demonstrations, though some find it long.
63 How to Make a Raspberry Pi Smart Mirror
A complete walkthrough of building a Raspberry Pi smart mirror, valued for listing every part and showing the frame construction step by step.
64 Imaginary Numbers Are Real [Part 1: Introduction]
The first part of a visual series on imaginary numbers, recommended to engineering students struggling with the complex maths behind phasors and reactance.
65 Transmission Lines - Signal Transmission and Reflection
An animated explanation of signals travelling and reflecting on transmission lines, linked in questions on trace impedance, bus termination and voltage doubling at an open end.
66 HACKED!: Adding a Current Limit Feature to a Buck/Boost Converter
Adds a current limit to a cheap buck/boost module with a sense resistor and comparator; people borrow the circuit for CC/CV chargers and motor supplies.
67 Designing a 7-segment hex decoder
Ben Eater builds the logic that turns a 4-bit value into seven-segment digits using plain gates, praised as a clear introduction to combinational design.
68 EEVblog #1055 - How to Design a Custom LCD- µSupply Part 16
Dave Jones walks through designing and ordering a custom multiplexed LCD for his bench supply project; recommended to anyone weighing up a custom display.
69 #257: Power Supply Decoupling & Filtering: why we use multiple caps in different locations
A w2aew demonstration of why boards use several decoupling capacitors of different values in different places, and what that does to the supply rails.
70 #138: How to Measure Output Impedance
A w2aew tutorial on measuring a circuit's output impedance with an oscilloscope, regularly given as the practical answer to source resistance questions.
71 Building a liquid crystal display (LCD)
Applied Science builds a working liquid crystal display by hand, and the video is shared as a clear way to understand how LCD segments switch.
72 How to make a super bright LED light panel (for video work etc)
DIY Perks builds a bright battery-powered LED panel for video work; people copy the design and ask how its potentiometer and resistor set the converter's output range.
73 #47 Power Saving with ESP8266 (Sleep Mode) Tutorial with some Tricks
Andreas Spiess covers ESP8266 sleep modes and measures its current spikes; cited both for low-power design and for why the module needs decent supply capacitance.
74 Sensor Fusion on Android Devices: A Revolution in Motion Processing
An InvenSense engineer explains combining accelerometer, gyroscope and compass data, recommended for understanding why integrating accelerometer readings into position drifts badly.
75 Crappy PSU analysis
A teardown and analysis of a cheap USB power supply, cited when people ask how to test chargers and whether bargain units are safe.
76 #85: Basics of R2R Ladder DAC | Digital Analog Conversion, Tutorial R-2R DAC Thevenin Superposition
w2aew walks through an R-2R ladder DAC using Thevenin reduction and superposition, cited as a worked example of both circuit analysis techniques.
77 EEVblog #72 - Let's Design a Product
Dave Jones works through the design of the uCurrent, cited for his comparison of three ways to generate a negative supply rail for an op-amp.
78 Build your own Variable Lab Bench Power Supply
A build guide for a home made bench power supply based on an LTC3780 module that several people have copied or adapted for their own bench.
79 #219: Back to Basics: Introduction to Field Effect Transistors JFET MOSFET
A w2aew explanation of how JFETs and MOSFETs operate, offered as a clearer route to understanding field effect transistors than a text answer.
80 #185: Back to Basics: Bipolar Transistor bias circuits and Beta dependence
Explains how to bias a transistor stage so the operating point does not depend much on the device's beta, using feedback.
81 EEVblog #1132 - The 3 Cent Microcontroller!
Dave Jones looks at a microcontroller costing about three cents; linked in threads on picking tiny, cheap parts and on splitting a job across several small chips.
82 The world's worst video card?
First part of Ben Eater's series building a VGA video card from logic chips on a breadboard; recommended for understanding VGA timing and the effort involved.
83 #198: Basics of a Vbe Multiplier: what it is, how it works & where it is used
Explains the Vbe multiplier, or rubber diode, and how it sets bias in class B output stages; the usual link when someone uses plain diodes instead.
84 Introduction to Phase Locked Loops
A practical tutorial on phase locked loops that people link when someone needs to see a PLL such as the NE567 working rather than read theory.
85 How Wrong Is VERITASIUM? A Lamp and Power Line Story
ElectroBOOM's reply to the Veritasium electricity video, widely offered as the clearer and more entertaining account of how energy actually travels along wires.
86 Does putting solder on high current PCB tracks help?
Measures how much adding solder to high-current PCB tracks lowers resistance, finding about 30 per cent; cited alongside Dave Jones's similar test in track-width discussions.
87 How does a USB keyboard work?
Ben Eater captures a USB keyboard's signals on an oscilloscope and works through the protocol manually, recommended to anyone trying to understand USB at wire level.
88 “Hello, world” from scratch on a 6502 - Part 1
Ben Eater starts building a 6502 computer on breadboards, single-stepping the clock to watch the bus; a frequent starting point for people building their own.
89 WebSockets for awesome on the ESP8266
CNLohr demonstrates WebSockets on the ESP8266 streaming real-time stats at hundreds of updates per second; cited as evidence of how responsive the chip can be.
90 #104: Circuit tutorial: sawtooth generator w/ current sources, diode switches, hysteresis comparator
Linked for its clear explanation of a current source circuit and as an entry point into a well regarded analogue electronics channel.
91 Low Power Arduino! Kill Power Circuit Tutorial
Shows an Arduino cutting its own power through a transistor after a button press, offered as an example for battery projects that need near-zero standby current.
92 Electromagnetism - Maxwell's Laws
A long lecture on Maxwell's equations, praised for making magnetic fields understandable, though it leans towards physics rather than practice.
93 JK flip-flop racing
Ben Eater builds a JK flip-flop and shows why it works only intermittently because of a race condition, cited to settle questions about his earlier latch schematic.
94 #79 GPRS/GSM and GPS in one cheap module: The A7 from AI-Thinker
An overview of the cheap A7 GSM and GPS module, recommended when a project needs both mobile data and positioning on a budget.
95 Turn your HC-05 into a HID Bluetooth device (No Parallel Port Method)
Shows how to reflash a cheap HC-05 Bluetooth module with RN-42 firmware so it can act as a keyboard style HID device.
96 #215: Basics of crossover distortion | LM358 op amp example
Linked to show crossover distortion in op amps such as the LM358, usually when someone's amplifier output is unexpectedly distorted or audibly rough.
97 How to build simple analog balancing robots
A demonstration of a self balancing robot driven by a 555 timer, linked as an example of simple analogue motor control without a microcontroller.
98 TSP #15 - Tutorial on the Theory, Design and Characterization of a Single Transistor BJT Amplifier
Recommended as a Signal Path tutorial that designs and measures a single transistor common emitter amplifier, pitched as a fairly basic introduction to class A gain stages.
99 Modern Embedded Systems Programming Course
Quantum Leaps' long embedded systems programming course, repeatedly recommended as a thorough, well explained route into low level ARM microcontroller work.
100 Reliable data transmission
Ben Eater video on sending data reliably from one Arduino to another, which a couple of viewers praise as an excellent and detailed explanation.
101 #49: Simple Component Tester using Oscilloscope - Octopus Curve Tracer
Builds a simple octopus curve tracer that plots component I-V curves on an oscilloscope; recommended as a cheap way to see a diode's knee voltage.
102 TSP #23 - Tutorial on the Design and Characterization of Class-B and AB Amplifiers
Signal Path tutorial on class B and class AB output stages, recommended for learning how an output stage drives a speaker and why the bias diodes are there.
103 #208: Visualizing RF Standing Waves on Transmission Lines
Alan Wolke makes RF standing waves on transmission lines visible on the bench; recommended for building intuition about reflections, SWR and quarter-wave transformers.
104 EEVblog #601 - Why Digital Oscilloscopes Appear Noisy
Dave Jones explains why digital oscilloscopes look noisier than analogue ones, often linked when a new scope's trace looks fuzzy or someone claims analogue has infinite resolution.
105 Some random hints for quick hand SMD assembly
Mike of mikeselectricstuff shares practical tips for fast hand SMD assembly, including taping component strips to the bench; credited with improving people's assembly speed.
106 How to Make a Battery Protection Circuit (over-discharge protection)
DIY Perks builds an over-discharge cut-off for lithium cells using a low-voltage alarm module to trigger a relay; used as the starting point for home-made protection boards.
107 #111: How to make a high performance oscilloscope probe socket
w2aew shows how to build a low-inductance scope probe socket into a board; recommended for measuring fast edges and switching spikes without ground-lead ringing.
108 #137: Why your Function Generator's output voltage reading can be wrong
Explains why a function generator output can read twice the set amplitude on a scope without a 50 ohm termination, and how termination fixes it.
109 EEVblog #49 - Decibels (dB's) for Engineers - A Tutorial
Dave Jones explains decibels for engineers, including dBm, and is the standard link when someone asks why dB is used for signal-to-noise ratios and Bode plots.
110 The US electrical system is not 120V
Referenced for a detailed look at how American service panels are laid out and why 208 and 240 volt supplies differ.
111 #172: Basics of Op Amp Gain Bandwidth Product and Slew Rate Limit
Covers how an op amp's gain bandwidth product and slew rate limit a closed loop circuit, used to explain unexpected bandwidth results.
112 #90: Measure Capacitors and Inductors with an Oscilloscope and some basic parts
Shows how to measure capacitance and inductance using an oscilloscope and a cheap pulse generator with fast edges built from a Schmitt trigger inverter.
113 EEVblog #1044 - LCD Technology Tutorial
Dave Jones explains how segment LCD panels work and are driven, useful when reverse engineering or repairing a bare display.
114 Are over-discharged lithium cells safe? (And how to test for damage.)
Big Clive tests whether over-discharged lithium cells are safe to recharge and how to check them for damage; cited in debates about deep discharge.
115 Why do Li-ion Batteries die ? and how to improve the situation?
A lecture on why lithium-ion cells degrade and how to extend their life, cited for an expert view on cell strain and on battery longevity.
116 Signals and Systems
Neso Academy's long Signals and Systems lecture playlist, repeatedly praised by engineering students as the resource that got them through the module.
117 #105: More Circuit Fun: Simple 3 transistor sawtooth generator / oscillator
Builds a simple three-transistor sawtooth oscillator and shows it running on a scope; people copy the circuit but report it gets finicky at higher frequencies.
118 How to Solder QFN MLF chips Using Hot Air without Solder Paste and Stencils
A demonstration of soldering a leadless QFN chip with a hot air station, used as a guide by people hand assembling fine pitch surface mount parts.
119 #135: Measure Capacitor ESR with an Oscilloscope and Function Generator
A w2aew tutorial on measuring a capacitor's ESR with a function generator and oscilloscope, recommended when diagnosing failing electrolytics in repair work.
120 Invention Release! Carlson LV Capacitor Leakage Tester.
Mr Carlson presents his own low voltage capacitor leakage tester, admired by people restoring old equipment who want to check capacitors out of circuit.
121 Gain and Phase Margins Explained!
Brian Douglas explains gain and phase margin and what they say about closed-loop stability; recommended to students of feedback and amplifier stability.
122 EEVblog #225 - Lab Power Supply Design Part 4 - PWM Control
Part four of Dave Jones's lab power supply series covers PWM control filtered to an analogue voltage; also cited for spotting probing artefacts on a scope.
123 How Boost Converters Work (DC-DC Step-Up) - Electronics Intermediate 1
Explains how a DC-DC boost converter steps voltage up with an inductor, switch and diode; the usual link for people puzzling over cheap USB step-up modules.
124 Introduction to RTOS
Shawn Hymel's Digi-Key playlist introducing FreeRTOS concepts on an ESP32 within the Arduino framework, suggested as a gentle first step into real time operating systems.
125 Ben Heck’s Auto Tracking Camera Part 1
A Ben Heck build using a Pixy camera to track and follow objects, offered as a starting point for colour based tracking projects.
126 I bought 1000 meters of wire to settle a physics debate
AlphaPhoenix recreates the Veritasium circuit geometry and measures it, offered as the hands-on companion to the debate over how energy travels along wires.
127 Ultimate nRF24L01 range comparison
A thorough range comparison of nRF24L01 module variants and antennas by iforce2d, with graphs and a downloadable results spreadsheet.
128 DIY Buck Converter || How to step down DC voltage efficiently
GreatScott builds a DIY buck converter with an Arduino driving a MOSFET, cited as a clear way to understand how step-down switching converters work.
129 Turn The Raspberry Pi Zero Into A Mini Dongle Computer
N-O-D-E's guide to turning a Pi Zero into a USB dongle computer accessed over SSH, widely followed for compact headless Pi projects.
130 Oscilloscope Probe Technique - Ground Spring
Short demonstration of swapping the long probe ground lead for a ground spring; often cited on electronics.stackexchange.com when a noisy scope trace is really a probing artefact.
131 Digital Scale Strain Gauge Weight Sensor
A practical video on reading strain gauges from a salvaged scale, linked for its schematic when people ask how to build a weight sensor.
132 EEVblog #588 - How To Do PCB Production Testing
Dave Jones tests an initial production batch of boards; cited for test traces brought out to the panel edge for functional testing before depanelling.
133 EEVblog #552 - DFM Automated PCB Panel Testing
Dave Jones shows automated testing of PCBs while still panelised, cited for test points and for traces routed across snap-off tabs.
134 EEVblog #479 - Opamp Input Bias Current
Dave Jones explains op-amp input bias current and the offset it creates across input resistors, linked when an amplifier's output sits away from the calculated value.
135 EEVblog #239 - PCB Design For Manufacture Part 2
Part two of Dave Jones's design for manufacture series, recommended to anyone taking a prototype to a production PCB.
136 EEVblog #678 - What is a PCB Spark Gap?
Dave Jones explains PCB spark gaps; cited in discussions of spark gaps and gas discharge tubes as protection against high-voltage transients.
137 EEVblog #801 - How To Design A Digital Clock
Dave Jones revisits a discrete-logic digital clock he designed years ago, useful for understanding mains-frequency timekeeping and old-school logic design.
138 What Every PCB Designer Should Know - Return Current Path (with Eric Bogatin)
Eric Bogatin explains with Robert Feranec where return current really flows and why split planes cause trouble; repeatedly recommended for anyone routing signals between layers.
Hidden gem139 #68: Oscilloscope Probe Ground lead length effects on signal quality
A practical demonstration of how the length of a scope probe's ground connection distorts fast edges, cited whenever ringing or probe grounding questions arise.
140 Making nice-looking front panels with no setup cost
A mikeselectricstuff video on ordering ordinary circuit boards to act as neat front panels, suggested as the cure for rough hand-cut project cases.
141 EEVblog 1439 - Analysing Veritasium's Electricity Misconceptions Video
Dave Jones's reply to the Veritasium electricity video, used in debates about how energy travels along wires and when transmission line thinking actually matters.
142 EEVblog #717 - How To Hack Vacuum Fluorescent Displays
Dave Jones works out how to drive a vacuum fluorescent display bought from eBay, useful for anyone reverse engineering one without documentation.
143 *EXPERT LEVEL* Soldering Tutorial #5 TTC Avionics
NASA's avionics soldering procedure, thorough to the point of excess for hobby work but valued for reliability-critical builds and its flux cleaning section.
144 EEVblog #1081 - Are Bypass Capacitors REALLY needed? (Muntzing)
Dave Jones tests whether bypass capacitors matter in practice, usually linked alongside his companion decoupling tutorials when questions about choosing decoupling capacitors come up.
145 How to Build an AVR Development Board
Ben Heck builds a bare AVR development board from the chip up, used to show what an Arduino actually contains and how to work without one.
146 EEVblog #855 - Ceramic Capacitor Piezoelectric Effect
An EEVblog video demonstrating audible whine from ceramic capacitors, linked when people ask why a circuit board is making a high pitched noise.
147 Build your own portable POWER STATION (1200w, USB-C and MORE!)
A build walkthrough for a large 18650 power bank with a BMS, often cited as a clear example of how such a pack goes together.
148 EEVblog #626 - Ceramic Capacitor Voltage Dependency
Dave Jones demonstrates how ceramic capacitor value falls under DC bias, cited whenever someone asks about swapping or uprating capacitors.
149 HOW MUCH abrasive filaments damage your nozzle!
CNC Kitchen measures how abrasive filaments wear printer nozzles, cited for judging wear by nozzle length and for choosing a hardened nozzle.
150 PID Control - A brief introduction
Brian Douglas's introduction to PID control, repeatedly recommended as the first thing to watch before tuning a loop for motors or robots.
151 #207: Basics of a Cascode Amplifier and the Miller Effect
An introduction to the cascode amplifier and why it tames the Miller effect, offered as a starting point when the topic comes up.
152 Electronic Basics #3: Programming an Attiny+Homemade Arduino Shield
GreatScott turns an Arduino into a programmer for the ATtiny85, the usual pointer when someone wants to shrink a project onto a smaller chip.
153 Level Shifting Tutorial 5V-3.3V Quick and Dirty Methods
Walks through several cheap ways to shift logic between 5 V and 3.3 V and compares how each holds up as frequency rises.
154 EEVblog #392 - 555 LED PWM Hack
Dave Jones builds a 555-based PWM LED dimmer, used as a worked example of timer circuits, steering diodes and duty cycle control.
155 #168 ESP32 Dual Core on Arduino IDE including Data Passing and Task Synchronization
Andreas Spiess explains running code on both ESP32 cores from the Arduino IDE, including passing data between tasks and keeping them in step.
156 Arduino PWM Tutorial #2 - How to Set PWM Frequency Accurately
A frequently cited explanation of changing Arduino PWM frequency with a dedicated library, the second part of a PWM tutorial series.
157 DIY Buck/Boost Converter (Flyback) || How to step up/down DC voltage efficiently
Recommended as a dependable explanation of how buck and boost converters change DC voltage, useful if you want to build one rather than buy a module.
158 I2C Bit-Banged without Microcontroller!
Praised as a visual walk-through of the I2C protocol, driving the bus by hand so each clock and data transition can be seen.
159 #235: Basics of Analog Panel Meters | Analog meter movements | D'Arsonval
A w2aew explainer on analogue panel meters, praised for teaching how to characterise and drive them, often paired with his follow up video.
Hidden gem160 Synchronizing AC generators -- Part 1 (introduction and sync lamps)
Demonstrates synchronising AC generators with sync lamps, cited when people ask how generators are matched to the grid or to each other before connection.
161 SparkFun Engineering Roundtable 11-12-12: HID and USB Devices with Chris Taylor
A SparkFun video suggested as a first stop when making an Arduino act as a USB keyboard or other HID device, with links to further resources.
162 Low-Cost Multi-touch Whiteboard using the Wiimote
A demonstration of using a Wii remote's infrared camera to track IR LEDs, often cited for cheap DIY position tracking and light pen ideas.
163 #135 Radar Sensors / Switches: Comparison and Tests
Recommended for understanding cheap radar motion sensor modules, comparing several and testing how they behave as an alternative to PIR.
164 RetroPie & KODI Custom Build (link included)
Shows a dual-boot Raspberry Pi image that switches between RetroPie and a Kodi build from inside either system, with a ready-made SD image available.
165 Ultrasonic Mist Maker || DIY or Buy
A GreatScott build of an ultrasonic mist maker, linked when people ask how to drive a piezo element at megahertz frequencies from a DC supply.
166 Kirchhoff’s Voltage Law versus Faraday’s Law: the Conclusion
ElectroBOOM's follow-up on whether Kirchhoff's voltage law holds in a changing magnetic field, recommended as a careful response to Walter Lewin's lecture demonstration.
167 EEVblog #244 - How To Lay Out A PCB - PSU Design Part 9
Dave Jones laying out a real power supply board, often named as the main video to watch for PCB layout best practice once a schematic exists.
168 HACKED!: Portable DVD Player
A walkthrough of wiring a salvaged portable DVD player screen to a Raspberry Pi, linked for cheap display options when buying new is not wanted.
169 Streaming PC Games to the Raspberry Pi 2!
A guide to streaming PC games from a desktop to a Raspberry Pi 2 connected to a television; linkers found it detailed enough to follow.
170 Reballing flip chip GPUs is BULLSHIT - the truth about dead laptop GPUs & repairing them.
A Louis Rossmann video arguing that reflowing a failed graphics chip is a temporary fix at best, cited when someone hopes to revive a dead board.
171 (#0093) World's Simplest Single Transistor Oscillator - BJT with Negative Resistance
Cited to explain how a transistor driven into breakdown shows negative resistance and can be made to blink an LED as a simple oscillator.
172 #297: Basics of the Smith Chart - Intro, impedance, VSWR, transmission lines, matching
W2AEW walks through Smith chart fundamentals and finishes with an L network matching example, recommended as a clear RF primer.
173 Weekend Projects - Raspberry Pirate Radio
A Raspberry Pi pirate radio demo, linked as inspiration and a starting point for turning a Pi into an FM transmitter.
174 Power Inverters Explained - How do they work working principle IGBT
Linked alongside MOSFET and inverter discussions as a helpful explanation of power switching, and suggested as a project worth recreating with a microcontroller.
175 Soft touch power switch (Push on Hold off)
Explains a push-on, hold-off soft power switch built from transistors with a readable schematic; recommended for battery projects that want one button for power and input.
176 Back EMF High Voltage Spikes on the Oscilloscope - Part 1
A scope demonstration of the voltage spike an inductor or relay coil produces when switched off, used to explain why flyback diodes matter.
177 (Sponsored) PCB Vias 101 - Phil's Lab #77
Phil's Lab tutorial on PCB vias, covering why signals changing layers need a nearby return via and how ground stitching ties planes together.
178 Autoleveling on 3D printers: 9 myths and 12 sensors tested!
Thomas Sanladerer tests twelve bed-levelling sensors, cited for finding that inductive probes are the most precise but depend heavily on the bed material.
179 EEVblog #919 - How To Charge Li-Ion/LiPo Batteries With A Power Supply
Dave Jones shows how to charge Li-ion and LiPo cells from a bench supply using constant current then constant voltage; followed by people charging single 18650 cells.
180 Are Your Capacitors Installed Backwards? Build this and find out
Cited to show that a capacitor's plate orientation may affect audio circuits owing to how the part is constructed.
181 How to Make Double Sided Circuit Boards at Home
Mr Carlson documents his toner-transfer process for making double-sided circuit boards at home; people report reliable results when following it with its companion video.
182 Polarised Solar DC Circuit Breakers - Reverse Polarity
Demonstrates a polarised DC breaker failing when wired in reverse, with the arc sustained inside it; cited when people ask whether breaker polarity matters in battery systems.
183 Using Limelight-Pi to remote control Steam games from a Raspberry Pi
A demonstration of streaming PC games to a Raspberry Pi with Limelight, shared to show the playable performance you can expect.
184 Time Fountain - Optical Illusion
The time fountain that strobes LEDs over falling water drops, cited by several Arduino builders as the inspiration for their own attempts.
185 #69 M2M: TCP/IP to the Cloud over GPRS with the new A6 Module and info about the new A7 Module
Andreas Spiess walks through the cheap A6 GSM module, recommended for getting it powered, reset and talking over AT commands from an Arduino.
186 #67: Basics of Common Emitter Amplifier Gain and Frequency Response with Measurements
A w2aew tutorial on how a common emitter BJT amplifier's gain and frequency response are set by its external components, backed by bench measurements.
187 #82: How to use a Diode as a Switch / Diodes as Switches / Basics of Diode Switches
A demonstration of using ordinary and PIN diodes as signal switches, cited when people ask how to switch low level audio or high frequency signals electronically.
188 QFN reflow without hot air
Shows a QFN package being soldered with only an iron by heating the board from the underside, offered as an alternative when no hot air station is available.
189 E-paper hacking: fastest possible refresh rate
Applied Science explores how e-ink displays work internally while pushing their refresh rate, cited for understanding the panels before driving one yourself.
190 Professor Eric Laithwaite: Magnetic River 1975
A demonstration of alternating magnetic fields, including levitating conductive rings and a travelling wave, referenced when people ask about induction and levitation.
191 Raspberry Pi Zero usb Dongle Project
A tutorial for turning a Pi Zero into a USB dongle computer networked through the host machine, which one user confirms works on a plain Pi Zero.
192 Testing dodgy 100W LEDs from ebay sellers.
A bigclive video on white LEDs that explains why some packages contain several junctions in series and raises doubts about the quality of cheap sourced parts.
193 Kicad Interactive Router (release version)
A demonstration of the KiCad interactive push and shove router from the CERN developers, linked to show how tracks can be dragged and rerouted in OpenGL mode.
194 3D printing guides: Setting up auto bed tramming leveling tilt compensation!
A guide to setting up auto bed levelling on a 3D printer with an inductive sensor, including how to drop its 12 volt output safely for an Arduino input.
195 EEVblog #674 - Rigol DS1054Z Teardown
An EEVblog teardown of a Rigol oscilloscope, cited for details of its internals such as the switching supply, relay count and build quality.
196 Peak detector circuit tutorial for beginners
An Afrotechmods explainer on peak detector circuits, repeatedly suggested to people trying to capture the maximum level of an audio or sensor signal.
197 Setting up Raspberry Pi as an OpenVPN Server (Step by Step Tutorial)
A walkthrough of installing an OpenVPN server on a Raspberry Pi; two people report following it without problems and the comment section helps with troubleshooting.
198 3D printing guides: Calibration and why you might be doing it wrong
Argues that X and Y steps should come from the hardware maths rather than test prints, while extruder steps do need calibrating; cited often in 3D printing answers.
199 DIY Class D Audio Amplifier
GreatScott builds a class D audio amplifier with an LC output filter; liked as a project, though followers note details missing from the schematic.
200 Creality 32 bit V4 board guide - Ender 3 V2, BLtouch & more
Covers compiling Marlin for Creality's 32-bit V4 board and adding a BLTouch probe; recommended for Ender 3 upgrades, though its wiring assumes earlier videos.
201 The Superheterodyne Radio: No really, that's its name
An explanation of heterodyning and intermediate frequencies in radio receivers, recommended as a clear introduction, with an audible demonstration of beat frequencies.
202 Divergence and curl: The language of Maxwell's equations, fluid flow, and more
A 3Blue1Brown visual explanation of divergence and curl in the context of Maxwell's equations, praised for making the maths behind electromagnetism intuitive.
203 EEVblog #1058 - Quick 861DW Hot Air Rework Station Review
Dave Jones's EEVblog review of the Quick 861DW hot air station, cited when people recommend it as a good value rework tool.
204 EEVblog #505 - IR Learning Remote Control Hack
Dave Jones works through a remote control hack, covering IR carrier signalling and how button matrices work, recommended before building your own IR project.
205 EEVblog #744 - SMD Thermal Heatsink Design - µSupply Part 15
Dave Jones on getting heat out of surface mount parts through the board, recommended for understanding thermal resistance and the electrical analogy for heat flow.
206 EEVblog #314 - Korad KA3005P PSU Teardown
An EEVblog teardown of a programmable bench power supply, cited for its remote interfaces and a note on tinned exposed traces for current.
207 EEVblog #24 - Chopper Operational Amplifiers
Dave Jones explains chopper and auto-zero op-amp techniques and why they suit low offset current measurement, cited as the usual primer on the topic.
208 What Decoupling Capacitor Value To Use And Where To Place Them | Eric Bogatin
An explanation of decoupling capacitors and why fast switching edges cause supply voltage dips, recommended as clearer than most on the subject.
209 Un-brick the FT232RL FTDI USB Serial Adapter
Linked as a fix for FT232RL FTDI USB serial adapters that appear bricked, restoring the USB product ID so the board is recognised again.
210 Atmel Studio 7 - Programming the Arduino Uno via the bootloader without programmer.
Recommended as the way to get Atmel Studio 7 uploading to an Arduino Uno through its bootloader, so no separate programmer or debug hardware is needed.
211 Analyzing actual Ethernet encoding | Networking tutorial (4 of 13)
Ben Eater probes a 10BASE-T link with an oscilloscope and decodes the Manchester-encoded bits by hand; part of his networking series and a common starting point for line-coding questions.
212 Opamps - Tutorials & Practicals
Offered as a dedicated playlist for learning how op-amps work and how to use them in circuits.
213 Resolver
Pointed to as a reasonable explanation of how a resolver works and measures shaft angle, linked as an example of its operation and applications.
214 How to: Ideal Op. Amp Transfer function, Poles, Zeros, Node Voltage, Nodal Analysis
Recommended for learning to derive the transfer function of an op-amp circuit, but it assumes an ideal op-amp with infinite open-loop gain.
215 Computer killing powered USB hub. (Mac murderer)
Shared as a short warning about feeding power back into a host's USB port, which breaks the specification and can damage the computer.
216 #101 Long lasting DIY "Amazon Dash Button" using an ESP8266
Recommended Andreas Spiess video on a MOSFET latch that lets a microcontroller hold its own supply on after a button press, then cut it off when finished.
217 Introduction to the Op Amp Part 1
Opening part of a lecture series introducing op amps and nodal analysis around them; suggested to students stuck on op-amp circuit questions.
218 Takaya 9600 flying probe tester dual side
Shown as an example of the automated flying probe testers used in PCB production, mainly to illustrate what such equipment costs and does.
219 Building a quality USB-C microphone
A build guide for a DIY USB microphone using an electret capsule and a JFET preamp, suggested as a rewarding audio project.
220 Ball Bearing Motor - How to Make/How it Works
A demonstration of the curious ball bearing motor, which spins for no obvious reason, linked as an odd project along with a theory of why it turns.
221 #196: How a Directional Coupler in an SWR meter works
Explains the working principle of a directional coupler using a homemade example like those inside SWR meters, cited in discussions of reflected power.
222 Why I’m switching over from the awesome Arduino IDE to Atmel Studio.
A case for leaving the Arduino IDE in favour of Atmel Studio, suggested to hobbyists wanting a more professional AVR workflow or an embedded career.
223 MVI 3283
A short clip of eight TPIC6B595 shift registers driving a large 12 V LED segment display, posted by the board's builder as a working example.
224 Anritsu spectrum analyser teardown
A spectrum analyser teardown linked for one memorable section where unusual RF construction baffles even the presenter.
225 Defcon 18 - Practical Cellphone Spying - Chris Paget - Part.mov
Linked as a clear explanation of how GSM mobile phone traffic can be intercepted, offered as background rather than a build guide.
226 Easy Addressable LEDs with Arduino! WS2812B Tutorial
Cited for showing how to drive WS2812 style addressable LEDs directly from a microcontroller without relying on a library.
227 What does the Laplace Transform really tell us? A visual explanation (plus applications)
Zach Star introduction to the Laplace transform, recommended to engineering students who find control theory and signal maths intimidating.
228 #147: Basics of Varactor Diodes | Voltage Controlled Oscillator VCO Example
w2aew tutorial on varactor diode behaviour with real measurements and a VCO circuit demonstration, linked when tuning diode questions arise.
229 #133 Safe Shutdown for Raspberry Pi with Super Capacitors
Andreas Spiess covers building a small battery backup that lets a Raspberry Pi shut down cleanly during a power cut, praised as a good overview of the challenges.
Hidden gem230 How fast can your hotend print?
Measures how much filament a hotend can melt before under-extrusion sets in as print speed rises; cited when people tune printers for high speed.
231 Sound reactive using Perlin Noise and glitter
A short demo of a sound reactive WS2812B strip effect driven by an Arduino Nano and MEMS microphone, shared by its maker as an example with code.
232 EEVblog #242 - Hakko FX-888 Soldering Iron Hack
Dave Jones tears down a Hakko FX-888 soldering iron and modifies its indicator LED, giving a look at build quality along the way.
233 12V BoostPack. Replaces auto battery. Works great!
A hobbyist replacing a car starter battery with a supercapacitor bank, often cited in debates about whether the idea is practical outside of experiments.
234 Filaween complete playlist
Thomas Sanladerer's series tests and compares 3D printing filaments with a methodical approach; recommended for judging the strength and flexibility of brands and designing your own tests.
Hidden gem235 Disassembly and schematic of an arc lighter.
Big Clive takes apart an arc lighter and draws out its circuit, cited for the schematic and estimated electrode voltage.
236 Inside some dodgy Chinese USB power supplies from Greece.
Big Clive examines some USB power supplies and finds poor isolation, used to show how a mains charger can fall short on safety.
237 Build a Power MOSFET H-Bridge for Arduino, PIC
Recommended as the best explanation of MOSFET H-bridges, including how to drive the P channel high side and other FET design issues that basic guides miss.
Hidden gem238 RGB light strip synced to music
A music-reactive LED strip project that people point to as a template for their own room lighting, with hardware and code details in the description.
239 ChibiMo: Arduino + KS0108 graphics LCD = USB Monitor
A Japanese project that uses an Arduino to turn a KS0108 graphic LCD into an extra Windows display, often linked as a curiosity when people ask about LCD controllers.
240 ambi-tv: computer-less ambilight-clone based on Raspberry Pi
A Raspberry Pi based Ambilight clone that lights the wall behind a television from its HDMI signal without a PC, recommended to people wanting the same effect.
241 Surface Mount (SMD) Hot Air Soldering
Shows surface-mount parts soldered with paste and hot air, with components pulling themselves into place as the solder melts, which people find convincing.
242 SLAYER EXCITER - Tutorial, Explanation, and More
A slayer exciter Tesla coil build guide that two people found clear and usable, while one critic questions its fix of paralleling burnt transistors.
243 #197:Simple V-I curve tracer using an oscilloscope and function generator
Shows how a signal generator plus a scope set to XY display can plot a diode curve without expensive equipment.
244 Here is why MOSFET drivers are sometimes essential! || MOSFET Driver Part 1 (Driver, Bootstrapping)
A GreatScott explainer on why a microcontroller pin struggles to switch a MOSFET quickly and how a gate driver circuit solves it.
245 Review: 4-cell/6-cell 18650 USB Mobile Power Banks #1
Apparently a review of a multi cell lithium power bank, linked in discussions about charging and combining cells, with no opinions given on the video itself.
246 DIY Lab Bench Power Supply
A guide to turning a spare computer power supply into a bench supply, linked both as a suggestion and as the plan people were following.
247 Ben Heck’s Raspberry Pi MAME Portable Part 1
A Ben Heck build showing how to pack a Raspberry Pi and a small screen into a handheld, linked often for portable console ideas.
248 One Bit ADC - Short Circuits
A short video on building a one bit analogue to digital converter, shared by Lady Ada and offered as a simple route from analogue signal to digital edge.
249 OctoWS2811 LED Library
Shows Paul Stoffregen's Teensy based OctoWS2811 system driving thousands of addressable LEDs as a video wall, cited when people ask how to run large LED displays.
250 EEVblog #602 - Introduction to Microphones
Opens EEVblog's six part conversation with Doug Ford on microphone design, recommended as a chance to hear a seasoned analogue designer reason through trade offs.
251 EEVblog #579 - Precision Low Current Source
Dave Jones works through designing a constant current source, offered as inspiration and possible help for anyone building their own.
252 Shorting out a fully charged cheap lithium jump starter. (It didn't end well.)
BigClive opens a lithium jump starter power bank, estimating its peak current with improvised methods and showing cable and cell resistance effects in practice.
253 EEVblog #1178 - Build a $10 DIY EMC Probe
Dave from EEVblog shows how to make a cheap magnetic field probe from a short coil and use it to hunt down EMI sources on a board.
254 Razavi Electronics 1
A complete university Electronics 1 lecture playlist, recommended as a thorough refresher for engineering students who feel weak on analogue fundamentals before further study.
255 EEVblog #373 - Multimeter Input Protection Tutorial
Dave Jones explains the layers of input protection inside a multimeter, including HRC fuses and shielding; often cited when someone asks whether a mistake has damaged their meter.
Hidden gem256 Controlling DMX lamps with Pure Data through Arduino (pt. 1)
Shows an Arduino driving a DMX light via the DmxSimple library with no RS-485 driver chip or shield; one viewer found it simple, others asked how it works.
257 TSP #31 - Tutorial on Programming the NeoPixel (WS2812) RGB LEDs and Equipment Giveaway!
Explains the WS2812 NeoPixel data protocol and its timing in detail, useful for understanding the signal even though it uses a non-Arduino microcontroller.
258 Arduino Uno (ATMEGA328P) on a breadboard Tutorial DIY project. Easy guide.
A simple tutorial on running a bare ATmega328P on a breadboard and burning its bootloader with an Arduino, though some steps may be dated.
259 CppCon 2015: Kate Gregory “Stop Teaching C"
Kate Gregory's CppCon talk on teaching C++ as its own language rather than C with extras, raised when Arduino code style comes up.
260 Update: Mystery Two Pin RGB LED - Pulse Controlled
Julian's follow-up on two-pin colour-changing LEDs, explaining how the tiny built-in chip is pulsed to switch colours, relevant to Christmas light strings.
261 EEVblog #961 - Monkey Debouncing
Dave Jones explains switch and relay contact bounce and the hardware and software ways to debounce it; recommended when microcontroller interrupts misfire on noisy inputs.
262 Understanding the Smith Chart
A Rohde and Schwarz explanation of the Smith chart, suggested alongside other tutorials for anyone learning RF impedance and matching.
263 How Capacitive Liquid Level Sensors Work: GILLSC.com
Explains capacitive liquid level sensing, the approach used in aircraft fuel tanks, and is recommended whenever someone wants to gauge liquid depth without moving parts.
264 Make 10 Etchants for Copper Printed Circuit Boards
A survey of alternative PCB etchants for home use, linked by people who prefer the hydrochloric acid and peroxide mix to ferric chloride.
265 How to build your own LED Color Organ || Arduino || MSGEQ7
An Arduino music visualiser build around the MSGEQ7 spectrum chip, pointed to as inspiration for sound reactive lighting projects.
266 EEVblog #558 - Beta Layout DIY SMD Thermal Reflow Oven
EEVblog's look at reflowing boards in a converted toaster oven, cited both for the method and for how poorly ordinary oven thermostats hold temperature.
267 Minifying the Arduino - [Anything Arduino] (ep2)
Walks through running an ATmega328 on a breadboard with a resonator as a minimal Arduino, recommended for cutting cost on permanent projects.
268 Build an 8-bit decimal display for our 8-bit computer
Used as a worked example of multiplexing several seven segment displays from one EEPROM, with a 555 timer and JK flip-flops providing the count.
269 BJT - Voltage Divider Bias Circuit
Recommended for working through BJT voltage divider bias calculations, including replacing the base network with its Thevenin equivalent before analysing an amplifier.
270 What does "impedance matching" actually look like? (electricity waves)
An AlphaPhoenix experiment measuring how current actually travels along a wire, offered as an intuitive route into transmission lines and impedance matching.
271 Raspberry Pi PirateBox For Anonymous File Swapping
Linked when people suggest the PirateBox project for a Raspberry Pi, including on a Pi Zero, with a note that it can be made portable.
272 Make your own SIMPLE 5x5x5 RGB LED Cube (Part 1)
GreatScott's first part of building a 5x5x5 LED cube, widely praised as a detailed and inspiring Arduino LED project.
Hidden gem273 DIY Boost Converter || How to step up DC voltage efficiently
Cited as a hands-on build of a small step-up boost converter driven by an ATtiny85, used as a reference for DIY power conversion.
274 Improve your Arduino programming skills - Using the ATmega328P registers.
Teaches direct register control on the ATmega328P to speed up Arduino code, recommended as a clear step beyond digitalWrite.
Hidden gem275 USB Type-C Power Delivery Trigger Board || DIY or Buy
Cited as a GreatScott video that explains some of how USB-C works and shows a ready-made USB-PD trigger board being used to obtain a higher voltage.
276 How to remove buzzing/noise from a cheap Bluetooth Music Receiver? (Experiment)
GreatScott tracks down buzzing from a cheap Bluetooth audio receiver and tries fixes; recommended for ground loop noise and the isolated DC-DC converter cure.
277 EEVblog #70 - Turn your Rigol DS1052E Oscilloscope into a 100MHz DS1102E (Hack)
EEVblog's walkthrough of unlocking a Rigol DS1052E to 100MHz bandwidth, cited when people weigh up which budget oscilloscope to buy.
278 Tutorial 09 for Arduino: XBee Wireless Communication
A tutorial on wireless serial links between two Arduinos using XBee modules, suggested as a starting point even for people using cheaper radios.
279 Digital Electronics: Debouncing a Push Button Switch (SPST)
Explains hardware debouncing of switches with an RC network feeding a Schmitt trigger inverter, part of a series people cite when cleaning up clock inputs.
280 Watching Live HD Television with a Raspberry Pi and HD HomeRun Prime running OpenELEC XBMC
Shown as a walkthrough for streaming live television to a Raspberry Pi media centre from a HDHomeRun network tuner over UPnP.
281 Single phase to 3 phase the simple way
Shared as a straightforward demonstration of using an idler motor as a rotary phase converter to run three phase equipment from a single phase supply.
282 EEVblog #664 - Peltier TEG Energy Harvesting Experiments
An EEVblog explainer recommended for understanding what Peltier modules can and cannot do, both as coolers and as small thermoelectric generators.
283 Practical MOSFET Tutorial #4 - N Channel, High Side and Bootstrapping
Recommended as a tutorial on bootstrapping the gate so an N-channel MOSFET can switch the high side of a circuit.
284 How to Drive LEDs - Easy Constant Current Circuit
Shared as a practical explanation of driving LEDs at constant current with a shunt regulator and a transistor instead of a resistor per LED.
285 Tektronix type 555 oscilloscope, over 100 tubes inside!
A Mr Carlson's Lab tour of a vintage Tektronix 555 oscilloscope, recommended to anyone learning about older test equipment and how it works inside.
286 Why 3 Phase Power? Why not 6 or 12?
An industry veteran explains why power grids settled on three phases rather than six or twelve, cited in debates about transmission efficiency.
287 How To Determine If Voltage Is Real Or a Ghost Voltage Using your Fluke Digital Multimeter
Explains ghost voltages and how a meter's low impedance setting tells real mains voltage from induced readings, shared in safety discussions.
288 Ben Heck's Raspberry Pi Point and Shoot Camera
Ben Heck strips unneeded parts off a Raspberry Pi to build a compact camera, cited as the standard example of shrinking a Pi by desoldering.
289 WARNING: Contains Numbers
Numberphile's look at Primer, a mechanical counter sculpture that finds prime numbers, which has inspired several hobbyists to build their own versions.
290 Classical Control Theory
Brian Douglas's classical control theory playlist, credited by several people with making a difficult university subject understandable and covering the fundamentals well.
Hidden gem291 Lec 2 | MIT 6.002 Circuits and Electronics, Spring 2007
An hour long MIT Open CourseWare lecture on circuits and circuit simplification, suggested for those wanting a thorough, university level grounding.
292 Brushed DC motor speed-torque curve (Kevin Lynch)
Kevin Lynch explains permanent magnet DC motor behaviour, including the speed torque curve, stall torque and motor constants, praised as a clear reference.
293 How to Use multimeter DIODE MODE to find ANY motherboard fault.
Jessa Jones shows diode mode measurements on an unpowered board compared against a known good one to locate faults; often cited in board repair questions.
294 Militarizing Your Backyard with Python: Computer Vision and the Squirrel Hordes
A talk on building a squirrel tracking sentry gun with Python computer vision, shared as a starting point for camera based animal detection projects.
295 EEVblog #215 - Gaussian Resistors
EEVblog measurement of many resistors showing how their values cluster, cited in debates about combining parts to improve precision.
296 The intuition behind Fourier and Laplace transforms I was never taught in school
Zach Star's intuitive introduction to the Fourier transform, recommended to engineering students finding signals and controls hard going.
297 EECE 251 - BJT Design of the Bias Circuit
A clear tutorial on biasing a common emitter BJT amplifier and picking collector and emitter resistors, cited by learners working through bias point and resistor ratio questions.
298 Hardware Demo of a Digital PID Controller
A hands on demonstration of PID control, linked to show what tuning the proportional, integral and derivative terms does in a real system.
299 #91 How to properly power the ESP8266 modules
Andreas Spiess works through powering an ESP8266 from a battery, covering the calculations involved, oscilloscope traces and adding a capacitor across the supply pins.
300 Build an Arduino EEPROM programmer
Ben Eater builds an Arduino Nano programmer for AT28C parallel EEPROMs, using shift registers for the address lines; people build it for their own projects.
301 TSP #21 - Tutorial and Experiments on Energy Harvesting ICs
A Signal Path tutorial on energy harvesting chips, recommended for anyone trying to turn tiny ambient sources into usable power; one section demos a low voltage AC input.
302 Arduino: Arduino on a Breadboard
Derek Molloy's walkthrough of building a bare bones Arduino on a breadboard, suggested as a cheap step towards designing custom boards.
303 How to Easily create Animations for your LED Matrix
A companion video on programming custom LED animations, offered to people who have built an LED display and want to make it do more.
304 Make your own Ambient Lighting with the Raspberry Pi Zero
A GreatScott! guide to driving APA102 addressable LEDs from a Raspberry Pi, recommended as a solid walkthrough to follow.
305 Bistable 555 - 8-bit computer clock - part 3
One of a set of clock module videos using 555 timers for a home built CPU, covering the bistable switch that selects between the oscillator and a pushbutton.
306 How does Induction Heating Work? || DIY Induction Heater Circuit
A DIY induction heater build that people copy and refer back to, though at least one builder reported overheating MOSFETs.
307 Learning AVR-C Episode 1: Introduction
Part of a tutorial series on programming 8 bit AVR chips in plain C, recommended for Arduino users ready to drop the Arduino layer.
308 #83: Basics of RF Mixers in Radio Receivers / Mixer Tutorial / Frequency Conversion
Alan Wolke covers how mixers convert frequencies in radio receivers, including why switching produces harmonic products; recommended alongside his diode ring mixer video.
309 #386 How to measure low Currents for ESP/Arduino? Power Profiler, Otii, µCurrent Gold, Joulescope
Andreas Spiess compares tools for measuring tiny and pulsed currents, from the Nordic Power Profiler Kit II to the Joulescope; recommended when a multimeter misses ESP32 current spikes.
310 4D Systems Touch LCD Screens
A SparkFun tutorial on 4D Systems serial displays with their own built-in interface system, recommended for adding a graphical screen to an Arduino project.
311 How to build a Raspberry Pi MAME in a NES
A detailed guide to building a Raspberry Pi RetroPie console inside an NES shell, including wiring the original power and reset switches.
312 Ben Heck’s DIY Calculator
Ben Heck builds a portable graphical calculator from scratch, cited as inspiration for handheld projects and for his tidy soldering technique.
313 Raspberry Pi 3 Bluetooth Networking
Andrew Mulholland sets up Bluetooth PAN networking on a Raspberry Pi 3 using a Mac as gateway; followed by people sharing a phone or laptop connection over Bluetooth.
314 EEVblog #441 - How To Track Down Common Mode Noise
Dave Jones demonstrates how to identify and track down common mode noise; pointed to when scope readings of small signals look swamped by interference.
315 Tektronix - Transmission Lines
Tektronix's explanation of transmission lines, recommended for building intuition about travelling voltage waves when a pulse is launched down a line.
316 Program ESP8266 Via Arduino Uno
Shows how to flash or program an ESP8266 module using an Arduino Uno as the serial adapter when no FTDI cable is to hand.
317 Building a Camera That Can See Wifi | Part 3 SUCCESS!
Final part of an open-source build that maps Wi-Fi signal strength into an image with a gimbal-mounted directional antenna and an SDR; cited for DIY RF imaging.
318 3.1 PV panel Spice model and simulation
University lecture building a SPICE model of a PV panel from a current source and diode; people point to it for setting saturation current and plotting power curves.
319 Designing and building a 1-bit register - 8 bit register - Part 3
Part of Ben Eater's 8 bit computer series, this one builds a register from D flip flops and is cited in questions about registers and RAM.
320 How to Control a Ton of RGB LEDs with Arduino & TLC5940
Demonstrates using the TLC5940 multi-channel PWM driver with an Arduino to run many RGB LEDs, suggested whenever someone needs more PWM outputs.
321 MOSFET Bootstrapping
Explains bootstrapping the gate of a high-side N-channel MOSFET with discrete parts; people copy the circuit and simulate it in LTspice to check their understanding.
322 EEVblog #572 - Cascading Opamps For Increased Bandwidth
An EEVblog demonstration of op-amp gain bandwidth product, showing how cascading stages can extend bandwidth, cited to settle theory questions.
323 Sharp memory LCDs
Linked as an example of Sharp memory LCD modules, offered as a low-power alternative to e-ink, though one commenter suspects they never caught on.
324 EEVblog #1036 - PSU Fire PCB Repair
An EEVblog repair of a fire damaged power supply board, linked to show both how a small capacitor can fail and how charred board material is removed.
325 Full HD Screen/Window & Audio RealTime Mirroring from PC to RaspberryPi with the browser
A demo of UV4L streaming between a browser and a Raspberry Pi, linked to show that browser based screen and camera casting works without add-ons.
326 Raspberry Pi Zero Extreme Teardown
An electronupdate teardown that decaps a Raspberry Pi's BCM2835 and inspects the board's power supply parts, cited for low level hardware details.
327 $3 laser transmits audio over 100m (arduino)
Demonstrates sending audio across roughly a hundred metres with a cheap laser diode and Arduino, cited as proof of range for optical data links.
328 The tools I use and why I bought them.
Louis Rossmann runs through the tools on his repair bench and why he chose them, often linked for the microscope discussion.
329 UV4L raspidisp driver in action & Rpi screen sharing over the web with Chrome (plugin-free)
Demonstrates the UV4L raspidisp driver streaming a Raspberry Pi's HDMI output to a browser over WebRTC without plug-ins; offered as a fast remote desktop alternative.
330 #167: How a Diode Ring Mixer works | Mixer operation theory and measurement
Alan Wolke explains how a diode ring mixer works and measures one on the bench; people build their own mixers from it and return with theory questions.
331 Extreme Power-Save Mode: ESP8266 powered ON after External Interrupt
Shows an ESP8266 kept fully off through its CH_PD pin and powered up by an external interrupt; suggested for battery sensors that should only wake on an event.
332 Ender 3 BLtouch vanilla Marlin guide
Teaching Tech walks through fitting a BLTouch to an Ender 3 and configuring vanilla Marlin firmware; widely followed, including for clone probes on other printers.
333 Raspberry Pi Mini NES Classic Console
A maker's short demo of a scaled down NES style Raspberry Pi console, cited as an example of a clean 3D printed case with a working reset button.
334 Wireless Digital Audio Streaming Realtime with Arduino and an NRF24 Module
Linked as an example of sending digitised audio between Arduino boards over cheap nRF24L01 2.4GHz radio modules.
335 #287 Remote Controller for Clocks (IKEA and others, DCF77, WWVB, MSF, JJY)
Andreas Spiess builds a low-power transmitter that sets radio-controlled clocks via DCF77, WWVB, MSF or JJY; cited when people ask about emulating a time signal.
336 THE STRONGEST MAGNET IN THE WORLD
Shows how a very high field laboratory magnet is built from stacked copper plates and insulators rather than wound wire, cited as an unusual coil construction.
337 Clock logic - 8-bit computer clock - part 4
A clock circuit for a homebrew 8-bit computer built from a 555 timer and logic gates, often copied by learners who then need help debugging it.
338 1kHz Laser detection using solar cell with no optical filtering
Shows a 1 kHz modulated laser being detected with a solar cell; often cited when people plan laser tag or detection projects, though it gives few circuit details.
339 What are the input voltage thresholds for the Raspberry Pi's GPIO pins?
Measures the input voltage thresholds of Raspberry Pi GPIO pins; often cited for the roughly 1.2 V switching point, though it tests an older Pi model.
340 Designing Power MOSFET Circuits - Circuit Tips and Tricks
Practical tips for designing power MOSFET circuits, including gate drive and dissipation calculations; offered as help for MOSFETs running hot or loading a microcontroller pin.
341 Raspberry Pi with a 3.2" TFT with Touch control
A demo of a cheap 3.2 inch SainSmart touch TFT running on a Raspberry Pi, linked as evidence that the display works.
342 Ultimate Raspbian (Raspbian+Retropie+XBMC) By Cerb for Raspberry Pi
A demonstration of combining RetroPie with XBMC on a Raspberry Pi, passed around as proof the setup works, with links in the description.
343 #157: Circuit fun: Automatic audio leveling circuit | audio compressor | for scanning receiver
An explanation of an automatic audio level control circuit built with germanium diodes, shared as a worked example with a schematic.
344 Microsoft Windows applications on a Raspberry Pi
Shows a way to run Windows programs on a Raspberry Pi under Raspbian using Wine; linked as a possible route rather than a tested one.
345 RF Links Tutorial - Cheap and Easy Wireless Arduino!
Offered a few times as an explanation of the low-level encoding behind basic radio modules, though commenters recall it only loosely.
346 EEVblog #37 - Rigol DS1052E Oscilloscope Teardown
EEVblog tears down the Rigol DS1052E oscilloscope, cited for what it reveals about the hardware, including the overclocked ADC parts inside.
347 Make your own Super Simple Ultrasonic Mist Maker
GreatScott builds an ultrasonic mist maker from a piezo disc, 555 timer, MOSFET and inductor; often referenced when people ask how the drive circuit produces oscillation.
