Laser engraver controlled by Arduino

Laser engraving can be a great way of adding ornaments, labels and other graphics on wooden surfaces. Nobody wants to buy industrial engraver for hobby projects, and if you follow MichielD99 instructable, you can build one by yourself. He used 1.8W 445nm laser module which is enough to burn engravings on wooden surface, but not close to laser cutting. He build his own parts out of MDF boards. Electronics part consist of Arduino UNO which drives two stepper motors by using motor driver boards. Arduino by using pen source grbl-mster software library accepts Gcodes to drive the laser position. Images can be generated with software like inkscape which supports the extensions provided by himself. He tried to keep make all system free and accessible for everyone , so he used… Continue reading

Self-Made Laser Tag

We all have played the laser tag game at various fest or amusement parks. This laser tag is suitable for two player but can be easily extended to more number of players. Another advantage of this system is that in place of conventional infrared light used in commercial system, real lasers are used. In simpler terms it comprises of a laser blaster, base station, and shot detection vest. Every blaster comprises of an RF transceiver, an LCD, a sensor, and a laser. The laser is used to fire at other players on the press of a button. A RF transceiver is also used to send and receive any information about the game. Each blaster is also equipped with a photo-transistor to determine if the blaster itself has been hit by… Continue reading

Basic Stamp based DIY Laser Light show makes use of scrap parts

Most of us has a lot of scrap parts lying around, most are just taking dust and space. This project takes the junk away and replaces it with a dangerously beautiful light show. Now why dangerous? This project uses a laser from an old DVD player – and yes if your eyes gets exposed to its light it could damage your retina. After building one these make sure to direct it to a wall and no eyes should be in its path. A Basic stamp is used to  control the speed of 2 motors, each motor is driven by an NPN transistor. The first motor is agled at 4 degrees while the second is at 6 degrees – Varying these angles would also vary the size of the projected laser… Continue reading

21st Century Sundial – The Combination of Ancient and Modern!

Although it’s already 21st century, but is nothing wrong to build a sundial, isn’t it? If you think it’s impossible to combine the ancient and modern technologies together, then you should read on this article… As you can see on the above figure, this is the finest combination of the 21st century and ancient time technology! Go figure, what would be the ancient people say, if they found out this incredible 21st century sundial? Yeah, they might be impressed of it! This project is built around an Atmel Attiny24 with crystal for better accuracy. The internal RC oscillator could be calibrated, but the precision can be easily achieved from crystal quartz! The whole project is quite simple, as you’re only need these following components, which as: Micro with Crystal and… Continue reading