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Uses a potentiometer and an Arduino to control the blink rate of an LED.
This circuit is adapted from the Arduino Cookbook, 6.2 Detecting Light. The code is adapted from 5.6 Reading Analog Values. Serial communication adapted from Bildr.
Arduino Cookbook by Michael Margolis with Nick Weldin (O’Reilly). Copyright 2011 Michael Margolis and Nicholas Weldin, 9780596802479.