Mechaduino is a board that sits on a regular stepper motor and turns it into a servo with a closed loop control of 0.1degree ... they’ve promised. he Arduino-sounding bit of the name comes ...

Here’s how it works so far: a motor drives an electric gear pump that pumps the water through a heater. It’s a closed-loop system, so there’s a 3-way valve after the heater that keeps ...