Little Laser Trip Wire circuit presented here can detect movement of people or objects while passing through the laser beam and trigger ... At the heart of the laser beam sender is a standard 650nM ...

A NODEmcu v2 is the brains of the clock — chosen because of its built-in WiFi capacity and compatibility with the Arduino IDE — and a 5mW laser sketches the time onto the sticker.

By converting an external Automatic Power Control (APC) circuit board into an ASIC we packaged the APC circuit into a standard 5.6mm TO-can. With the aid of an integrated monitor photodiode such laser ...

Both the blaster and the target run on Arduino Nanos. There’s a 5mW laser module in the blaster, and a speaker for playing the pew pew-related sounds of your choice.

The Arduino powered Laser trip wire system project is currently over on the Kickstarter crowd funding website looking to raise $3,000 pledges to make the jump from concept to production. Patrick ...