DIY - How to Build a Hard Disk Green Laser Projector!
Here’s a really cool DIY showing you how to build a hard disk laser scanner made from bunch of old hard disks.
My latest tinkery hardware and embedded systems project is a homebrew laser scanner. You know, the kind you see at planetariums- sweep a laser beam around on the wall really fast, and draw vector graphics. Commercial laser scanners have been around for decades now, but buying a complete system is still really pricy, even on eBay. Besides, where’s the fun in that?
There are plenty of examples of homebrew laser scanners on the internet. Many people have wired up a pair of loudspeakers, hard disk actuators, or other readily available mechanisms to an amplifier and used them for simple laser graphics. This will make some pretty wiggly patterns on the wall, but it isn’t a real vector graphics display. The best example I know of for a totally built-from-scratch laser projector (not using commercial galvo actuators) actually uses custom hand-wound galvanometers. Very nice.
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Loading ...DIY Hard Disk Drive Drum Machine!
Wow, this is awesome! This guy is serious about recycling. The hard disks are connected to his MIDI system and are all coordinated to play drums. Well watch the video after the jump to see it in action!
Fibra from Belgrade has created an interesting drum system. It uses old hard drive read/write arms as drum hammers. The original hard drive voice coils are used to move the arms. The picture above is the new system which doesn’t seem to be documented yet, have a look at the video for a demonstration of the first version. If you need a larger hard drive project fix have a look at these hard drive projects.
[via HackedGadgets - Make]
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