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. ... (Arduino Uno/Nano Sketch)… [code] ...

It would be interesting to see a laser-based sensor paired with this code. Posted in Arduino Hacks Tagged 3d scanner , arduino , sharp GP2D120X Post navigation ...

If you have an Arduino that can act as a keyboard for a PC, the code almost writes itself. ... The serial communications is I2C and there’s a tiny optical sensor onboard along with an IR LED.