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.

An Arduino Pro Mini provides the brains for the charger, and the source code and all the needed information to build your own like charger is on GitHub.