1 Build a 65c02-based computer from scratch
Ben Eater's series assembling a 6502 machine on breadboards, warmly suggested to anyone wanting a real grasp of how processors, memory and support chips work together.
Topic
interrupts
10 videos. Ranked by independent recommendations, not by views.
2 Getting Started with STM32 and Nucleo
Shawn Hymel's DigiKey course is widely offered as a well-made way into STM32 development, covering the IDE, debugging and peripherals with interrupts.
3 Intro to Embedded Systems Design w/ MSP430FR2355 (textbook videos)
A long, free MSP430 course praised for teaching absolute beginners GPIO, interrupts, timers and serial buses, and followed by some alongside the companion book.
4 #381 How to work with a Real Time Operating System and is it any good? (FreeRTOS, ESP32)
Recommended as an introduction to running a real-time operating system on the ESP32, and pointed to by people working with interrupts and semaphores.
5 Tutorial 10 for Arduino: Interrupts and Hardware Debouncing
Part of an Arduino tutorial series covering hardware interrupts, often pointed to for its hardware debouncing of a push button with an RC filter and Schmitt trigger.
6 #226 ROTARY ENCODER with no switch bounce 🤓 - you MUST use this
Ralph Bacon's explanation of rotary encoders and false readings from contact bounce, suggested for understanding the problem and for code others have reused.
7 #7 Arrays and Pointer Arithmetic
Lesson from the Quantum Leaps embedded programming course, praised for clearly explaining GPIO address offsets and why read-modify-write sequences can clash with interrupts.
8 #328 ESP32 Secrets: Interrupts, and Deep-Sleep under the Hood
Andreas Spiess's ESP32 video, recommended to people dealing with interrupts, higher frequencies and related chip features, though commenters recall its exact focus differently.
9 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.
10 Rotary Encoder Incremental rotary Encoder How to use it with Arduino
Used as a source of wiring and starter code for reading an incremental rotary encoder with Arduino interrupts, and often cited when troubleshooting that code.
