HOW TO – ATX -> Lab Bench Power Supply Conversion
New Instructable on how to convert a computer power supply into a power supply for a lab bench, mat_the_w writes “I started into my main electronics classes, and needed a good power supply for working on lab projects at home in my room. My roommate Adam told me about somebody online who had converted a spare ATX computer power supply into a lab bench power supply, so I decided to do the same thing.” Link.
The MAKE team is pleased to announced that we’ve teamed up with Instructables! What’s Instructables? It’s a convenient system for documenting any how-to project, it’s Wiki + Flickr + step-by-step collaboration. You can use images, text, ingredient lists, CAD files, and more. Read all about it
Heres how to take super-close photos, using a Pringles potato chip can – “So you want to take pictures of things up close, do you? You have gone tired of all the regular ways of doing so? Ready for bellows and reversing rings, but can’t afford them? Have no fear, there is a far cheaper way to get a reasonably good result!” Thanks Digitaler Lumpensammler!
Ever wonder how that Duck Hunt gun worked with your old NES? Here’s how – “Lots of home video games and arcade games use some sort of gun as an input device. You point the gun at the screen and pull the trigger, and if you hit the target on the screen, the target explodes. To create this effect, the gun contains a photodiode (or a phototransistor) in the barrel. The photodiode is able to sense light coming from the screen. The gun also contains a trigger switch. The output of the photodiode and the switch are fed to the computer controlling the game.” [
Matt writes “Strangely aesthetically pleasing window blinds made out of junk mail. By affixing strips of junk mail to an existing set of venetian blinds, one can drastically reduce the amount of light allowed through without losing the ability to raise and lower the blinds. In my case, about three months’ worth of junk mail, but your mileage will vary. Your trusty roll of duct tape (color to suit). Two rolls of scotch tape. A ruler. A spool of uninsulated wire. A pair of needle-nosed pliers. A thumbtack. Space to work.”
Great LEGO project, I’m hoping they release the code – “Introducing GameByEmail’s Dice-O-Matic. Made from Legos, a USB camera, and a bit of software, it’s a home-grown, dice-rolling monster. Don’t let it’s rickety looks deceive you; this puppy can easily crank out the 20,000 rolls a day consumed by GamesByEmail. In fact, at full speed it averages almost one roll a second, well over 80,000 a day!.” [
