Builds

Strain wave gear

Make a low cost 3D printed hi ratio gear
a graph showing the different potentiometer voltage values and the peak response

Sound LEDs

Sound shown on a LED string.
A dog water bowl, that has a small plastic antenna attached to the outside

Water detector

Send an sms when a water bowl needs filling.
LED strip rainbow animation

LED Grid

Smooth updates to a 900 LED grid.
quadcopter build with only motors, props, and ESCs

Quadcopter

Stable hover and directional control.
stepper motor moving a sled on rails with a timing belt

2D Icing Printer

A shape drawn with icing on a cake.
A 20 by 10 seven segment display made out of a cut string of LEDs counting

Hoop Counter

A basketball hoop that displays score.