Enter the ExtraCore library for Arduino, a software library that turns two or more Arduinos into a multi-core microcontroller with more pins than you’ll ever need.

Posted in Arduino Hacks, Slider, Tool Hacks Tagged 3d printed jig, 3d printing, arduino, jig, pin, pin jig, pins, shield ← All I Want For Christmas Is A 4-Factor Biometric Lock Box ...

Running out of GPIO pins? Learn how to connect multiple buttons to just one Arduino pin using clever wiring and resistor techniques. Perfect for compact projects, keyboards, or when using small boards ...

The whole thing worked because of all the generous people who have written Arduino code, and also code to adapt the basic Arduino stuff to work with alternative chips from the Microchip was Atmel) AVR ...