[over9k] used his Arduino to set up a laser trip wire. The laser is mounted along side the Arduino, reflects off of a mirror, and shines on a photoresistor that interfaces via a voltage divider. Th… ...

We aren’t sure if you really need lasers to build [HoPE’s] laser harp. It is little more than some photocells and has an Arduino generate tones based on the signals. Still, you need to excite ...

Arduino-Nano-Laser-Demo A simple example of using Arduino basic GPIO pin HIGH and LOW to switch on and off some cheap Chinese red lasers. This demonstrates the most simple aspect of any ...

This module allows you to develop a timing system, which utilizes the Arduino’s fast internal clock to provide an accurate timing system for kinematic experiments. Also, this module focuses on how to ...

Build your own interactive laser chasing toy for your dog using Arduino! In this DIY project, we use simple components like a laser module, servos, and motion logic to create a fun, automated game ...

Here’s the version of his laser engraver” DIY laser engraver components list : – Arduino Nano – 250mW 650nm Laser Module – A4988 Motor Driver – IRFZ44N Mosfet – LM7805 Voltage Regulator.

The purpose of this module is to create a cat toy that moves a laser with random motion. We will then use a potentiometer to control the speed of the laser. It ultimately provides a good introduction ...

That’s when I saw several instructables (Laser Tripwire Alarm, Arduino – Laser Tripwire Alarm System, and Super Easy Laser Tripwire, among others) using a laser tripwire.