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 ...

Note that the water flow sensor is not a power-hungry type; it draws a maximum of 15-20mA at 5V DC input! Software Preparation. The Arduino Sketch (code) uses the external interrupt (int 0) on Arduino ...