When you’re prototyping a new project, sometimes all you need is a switch. The folks at oomlout were tired of constantly having to rewire things, so they built a universal switch box for the … ...

To solve the problem without sourcing a new switch, [Jean-Noel] built his own Arduino based Dahlander switch. This consists of three relays that select the wiring configuration for each speed mode.

The new Raspberry Pi and Arduino breakout boards offer a range of useful features across three different boards that are available depending on your requirements and project.

The Arduino Uno board detects the tattoo artist’s gestures via a distance sensor, and signals the machine with an on or off output. Watch this video on YouTube. Source: AH : WTech ...