The receiver circuit includes an electromagnetic relay to assist the switching process of external electric loads such as floodlights, home alarm systems, etc. At the heart of the laser beam sender is ...

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. The time is ...

In this project, we create a joystick-controlled laser by ... directly to Arduino pin 9, and the other servo’s signal wire directly to Arduino pin 10, as shown in the circuit diagram in Figure ...

With the aid of an integrated monitor photodiode such laser diodes provide 5mW or 7mW output power with stable operation up to 70°C. The devices can even be offered in a very small 3.3mm TO-can ...

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. Fire away on the blaster ...

University researchers have remotely gained control of a home smart speaker using a laser. The hack worked at a range of 110m, and would have been further if the team had had more space. All that was ...