Both the motor and the encoder are connected to an Arduino Pro Mini which receives step and direction commands from the printer controller.

You could simply program your machine to give a visual indication of whether it's a lie or the truth by programming your Arduino to detect large shifts in your electrodermal activity.

An Arduino is a popular open-source single-board microcontroller. Learn how to program one and let the possibilities take shape.

It runs on an Arduino Pro Mini knockoff and an RTC module for the sake of simplicity. [Lee] chained NeoPixel strips together in five rows of eight, which allowed him to use a 3×5 font to display ...