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 ...

Adafruit has this week announce the arrival of a new product in the form of the Adafruit VCNL4040 Proximity and Lux Sensor – STEMMA QT, which is now available to purchase at an affordable $5.95 ...