Learn how to easily adjust the contrast of a 1602 LCD display using Arduino. In this quick tutorial, I’ll show you a simple trick to control the contrast electronically, without relying solely on the ...

A great place to start is using the Arduino. Skip to main ... how to use digital and analog inputs when building Arduino circuits, including controlling LEDs using pushbuttons and potentiometers.

Such potentiometers are expensive and prone to wear, however. Because of wear, they can open the control loop, allowing the motor to ramp up uncontrollably. With a few components, you can implement a ...