In Lesson 7, we learned how we can get in-between voltages from the Arduino pins using the analogWrite command. Actually, this command only approximates analog voltages, and does not produce actual analog signals. It works by quickly turning the voltage to the pin on and off. For example, if you ask for 2.5 volts, it … Continue reading Arduino Tutorial 8: Understanding Pulse Width Modulation (PWM) and the Arduino Analog Write Command