This How to Electronics guide shows you how to set up your pH sensor with an Arduino board ... this are useful for an array of projects, from DIY remote control cars to digital measuring tools.

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.

If your car doesn't have that feature, DIY blog Mad Science has put together a tutorial to roll your own sensor system with an Arduino. The build is incredibly simple and you only need a ping ...

Because of the affordability and seeming ubiquity of the Arduino platform, they have been hard at work this last month trying to get their Geiger counter sensor board for an Arduino out the door.

Why not create your very own high-speed camera trigger using an Arduino, piezoelectric sensor (as a sound sensor), a DSLR camera, and an external flash. Watch the video after the break to see it ...