I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...

The ArduIMU Quadcopter is a DIY Arduino helicopter that has been ingeniously designed to avoid objects and not bump into things. This innovative helicopter features four rotors and is equipped with ...

Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale. Now imagine ...