Harold's "Tank"

Every year a group of my friends have an engineering Secret Santa. The rules are simple: make something cool for under $20 that requires engineering to complete. In years past we’ve seen Google cardboard VR headsets that are 6DOF, match stick rockets, 3D printed fans that explode when used, 3D printed rockets with cardboard launch […]

These SCC2433b-MSE solar cells with the Miller Engine circuit on the back make it real easy to build a pulsing power source for your projects. These cells aren't quite as powerful as the SCC3733-MSE, but they're no slouches either! Check them out below!

Arc Reactor Kit Build Instructions Here's a quick blog on how to assemble the Arc Reactor Kit - Limited Edition. 1. Remove brown paper from all 4 acrylic pieces - the pieces are actually clear, so remove all the paper from both sides.

#4-40x1/2in Yellow Zinc Standoff, M/M, 1/4in threaded ends $0.50 #4-40 x 1/2" yellow zinc coated (chromate) steel standoff. IR Reflector sensor with leads $1.00 Reflective optical sensor with transistor output. 44mm Piezo Speaker $2.25 For making a LOUD beep, this piezo suits your need. Comes mounted in a plastic case with mounting tabs. Maxell LR44 […]