I didn’t think that the lasers in DVD burners were this powerful. If you have one that died (hopefully not because of laser failure) you might want to make your own high power laser. Be very careful when playing with something like this. I would suggest using laser goggles when operating. “The laser pictured above has a peak output measured at 225 mW (average output 200 mW). It’s a
You might remember the article where uC Hobby demonstrated how to power projects using a computer power supply. One of the issues was that there was a possibility of causing permanent damage if something accidentally got shorted out. Dave has fixed that designing a simple current limiting circuit. With the circuit installed you can now short out the power tap and know that worst case is a 200mA draw. Have
The effect of the Invisibility Sphere is interesting, looks like there are still some glitches that have to be worked out. I would love to see this using flat panel monitors with very small seams between them. “Artist attempts to build an invisible sphere. 215 monitors are placed directly opposite 215 cameras, allowing the viewer to peer directly through a eight hundred pound mass of steel, glass and electronics.” Via:
The Robo Dump would rent out like crazy at the gag shops. Press play below to hear the sound effects! Low bandwidth: [audio:robodump.mp3] High bandwidth: [audio:robodump2.mp3] “RoboDump is a robot. Sort of. And it poops. Sort of. Forever. A horrible, never-ending bowel movement complete with straining grunts, horrific gas, splashes, and pee sounds. The left channel speaker points up into the room (for the voice effects) and the right channel
Check out this very cool lighthouse project “This design is for an octagon lamp for simulating a lighthouse 6 second round trip flash. The lighthouse stands about 6 feet tall, an outline of the lamp head is should on the cardboard of one of the pix. I am really liking the Atmel Tiny controllers, very cool and a true RISC design (no funky divide by 4 microchip T state stuff,
LED technology has changed quite dramatically over the past decade. EE Times has an article in their latest edition that might have some drastic process changes that could lead to some significant price reductions. “Shimei Semiconductor Co. has developed a blue LED grown on a silicon wafer that it plans to make available by next April. Using silicon wafers as a substrate for GaN epitaxy could drastically lower the cost,
Not a revolutionary product, but the iTurbo Charge looks quite well done. I like the size and versatility. Internally it is probably a simple charge pump design. “Shaped (and sized) like a tube of lip balm, it’s going on sale next week for $30, initially available in black and white, but no (OTHER)colors. It can be turned on and off to prevent the iPod sucking juice when not in use,
