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from Instructables.com

Arduino Laser Engraver Wood Design!

It can cut through paper and cardboard, and engrave all kinds of wood. Such a fun tool to have around the workshop!

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from Make: DIY Projects and Ideas for Makers

An Arduino-Powered Laser Engraver That You Can Build

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from Instructables.com

Arduino Laser Tripwire

The Arduino is great, you can make it do pretty much anything you want. I wanted a tripwire. This is just the circuit and the code, you can use it for quite a few things, like a trigger for a camera, or you could make it shut down your computer if someone crosses it.When I have the time, I want to hook it up to an electric airsoft gun with a relay and have it shoot you when you break the beam. I suppose I'll add to the Instructable when that happens.So let's start!

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from Instructables.com

The MicroSlice V1

The MicroSlice V1 | A tiny Arduino laser cutter