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 ...

A unique project has been created by instructor balls member Sharathnaik, who has used a little Arduino Nano programming and 3D printed parts to create a unique heartbeat and visualiser. Other ...

There are many ways to detect a heartbeat electronically. One of the simpler ways is to take [Orlando’s] approach. He’s built a finger-mounted pulse detector using a few simple components and an ...