There was an error while loading. Please reload this page. Domestic electricity meter pulse counter consisting of a Bluetooth Arduino device and a listening service ...

Turn an old Geiger counter or CD meter into a prop, by adding an arduino and speaker to simulate clicks. I use a tilt sensor to activate that makes it hard for people to figure out what is happening.

Firstly, the ebay claim that it would be shipped from somewhere in the UK turned out to be false, and it took a day or two longer than the maximum estimated delivery time to arrive from the Far East – ...