AnalogRead inconsistency when powered with USB vs 5V/VIN - Classic Nano - Arduino Forum
Tutorial 07: digitalRead() and Serial Port Communication - Programming Electronics Academy
L1: Using buttons - Physical Computing
Arduino for beginners. Part 13: analog pins, Pulse Width Modulation. - YouTube
Help re: 10k ohm pulldown resistor, arduino nano still getting false input from digital pin (push button) wire is about 4 meters long. Any ideas on how to eliminate the false triggers? :
Arduino Uno Pins - A Complete Practical Guide - The Robotics Back-End