Air heat exchanger

Hot/cold air heat exchanger made from soda cans and Pvc pipe. Cheap and easy to build yet very effective.

Bicycle indicators

Long battery life bicycle indicators on single 9 volt battery

Arduino ir object tracking camera shield

Remotely turn your camera left and right. Use it as an object (beacon) tracking camera mount or selfie stick. Runs on a 5 volt usb power bank

Fix Chinese Arduino clone problems

Did you order a cheap Chinese Arduino copy but it does not work? Keep reading