Topic

pin saving

2 videos. Ranked by independent recommendations, not by views.

1. 

   1 Using LCD Displays with Arduino

   DroneBot Workshop 3 people · 3 months · since Oct 2020

   Offered as a tutorial for connecting an LCD to an Arduino through an I2C adapter, which cuts the number of pins used.

2. 

   2 HariFun #143 - How to read a 4x4 keypad using just one Arduino pin!

   Hari Wiguna 3 people · 3 months · since Oct 2016

   Shared as a clever trick for reading a sixteen-button keypad through a single analog pin, helpful when a project is short of microcontroller pins.