You must employ an appropriate battery pack to run your simple sports timer. The Arduino setup runs on external 9VDC ... In the code, millis() function is used for timing which returns the number of ...

The creative adventures with ATtiny series microcontroller are awesome if you know how to play them. ATtinys — especially the ATtiny85s — are all around us, and by using one, we can shrink the size of ...

The timer is based on an Arduino Pro Mini and an HX1230 ... and it’s another example of how keeping things simple is often a recipe for success.

Droplet and StackAR, developed by MIT’s Media Lab, allow users to set timers or program an Arduino using light-based ... but they allow for simple communication in an extremely intuitive way ...