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] ...

After uploading the code the Piezo will start making short beeps. On bright light the Piezo will only beep and on dark light it will be short. Some ideas for this experiment: Alarm for Lights in the ...

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.

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 ...