There are fill schematics and board layout for this powerful DIY amplifier that is based on the LM3886 chip. Looks like it is built like a tank. “This amp is based on the PA100 parallel amplifier detailed in National Semiconductor’s application note – AN1192. This amp uses two LM3886 per channel, in parallel circuit. This amp can deliver about 50W into a 8-ohm speaker and 100W into a 4-ohm speaker.
You may remember the paper camera that was featured some time ago. The author has put together a number of interesting videos that show the camera in action.
Megamachine from the Hacked Gadgets forum has made his version of the Hard Drive Oscilloscope. Watch some videos of it in action: Video 1 Video 2 Video 3
If you are in need of a CNC machine but don’t have the cash to buy one, why not make your own? Engadget has part 1 of an article explaining how to build your own CNC machine. “Computer controlled mills have been around for a long time. If you just want to buy oneone, Sherline makes mills that are ready to go (pictured is their CNC ready model — just
The Handy is an interesting project by Zaizhuang Cheng, Derrick Ko, Colin Tan and Naga Setiawan from Purdue University. Very impressive since the parts cost is around $100.00. “The motivation is to provide a button-free environment in which the user can just use hand gestures to control the sound system. For example, when the user is driving, all he has to do is perform the appropriate hand gestures to
You have seen propeller clocks before, but what about a Nixie Propeller Clock? I didn’t think so! Check out the link for code and a schematic. “I stuffed the board with the PIC, the crystal oscillator, two logic chips, 10 HV transistors, the nixie, the HV inverter from a disposable camera flash circuit, the 7805 5V regulator, a 0.6 Farad memory cap, diodes, and the pushbuttons for setting the time.
Got a RC chopper, why not take a camera into the sky for some aerial pictures? “Here’s a 3.4 I picked today. I sliced off the battery compartment and installed a servo plug so the camera can be powered by my plane/helicopters receiver. Works great. The 3 wires you see are from a servo extender, I’m not using the yellow (signal) wire…just the black and orange power ones. While it’d
