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 ...

Likely applications are button designs and proximity ... and as an Arduino-compatible shield. It can be used to add a capacitive-button user interface to Arduino projects. To apply for the MBR3 kit, ...

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.

allowing the sensor to measure the distance and subsequently prompt the buzzer to emit the right note. Since the project uses pretty basic components, the Arduino code is equally basic ...

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.