Posted in 3d Printer hacks, Arduino Hacks Tagged 3d printer, arduino pro mini, closed loop, closed loop control, dc motor, optical encoder, reprap, servostrap ...

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.

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 ...