Rob sent in the latest gadget freak, he writes – Seeing great potential in a normal, off-the-shelf product, Pete Griffiths designed a circuit he popped into the lamp to give it a new lease of life. His design combines a PIC and three constant current buck converters to create the RGB LED controller. This controller […]
All out of TO-220’s? Thinking maybe you can eke enough performance out of a smaller transistor? Want to squeeze a bit more current through those inexpensive TO-92 package transistors? Then add a small metal heatsink. I made this for a PWM DC motor driver, as some 2N2222 bi-polar transistors were handy. Of course, we should […]
Here is how to make a 2-channel RF transmitter and receiver that works on the 418 MHz frequency. Unlike IR remotes, this one can work through walls and at a greater distance too. It’s perfect for closing the garage door or anything else that you are too lazy to get up and do. – Link
Daqq writes – I wanted to play with a simple RGB LED, to see how colors would mix, change and stuff. So I build my own LED and “controller”. It fades in and out a set of 9 LEDs (3 RGB LEDs) into random values. Yet Another LED Blinkie project – Link.
The Thomas Henry 8038 Audio Generator device – The audio generator operates in the the range of exactly 20 Hz to 20 kHz. It features sine, triangle and square wave outputs. The frequency control set consists of a coarse and fine tune arrangement – the coarse control obviously will move the frequency in greater increments, […]
It’s hard to find a good place to store your bikes when you’re an apartment dweller. Here’s a nice looking bike rack made from a few cheap Ikea shelving parts. All you need to get from ikea is one stolmen post, two brackets and four hooks. you’ll also need some screws and some aluminium 20x20mm […]
Check out this awesome light-controlled synth “harp.” The builder explains: The harp is connected to the impOSCar VSTi software synthesizer, the TAOS sensor array sits on the floor in it’s own stand. The array above the harp i is just made up of fs mirrors for added p’zazz. Stephen Hobley Photography – Link
