Posted February 16, 2009 by Chris

This project is a very nicely designed weather satellite image receiver. The project write-up has the hardware schematic along with many nice photographs of the hardware in action. Take a good look at how much you can do with a simple microcontroller.

Posted February 14, 2009 by Chris

This project is a definite crowd pleaser. Any form of levitation or suspension always gets the attention of people as it looks physically impossible. The project write-up explains in great detail how to duplicate it and build your own.

Posted February 12, 2009 by Chris

The theory behind Jacob’s Ladder has been around for quite some time and the project has been reproduced many times in many different ways. This project write-up gives you some background theory and shows a simple implementation of it.

Posted February 10, 2009 by Chris

Although most modern microcontrollers have ADC’s (analog to digital converter) inside of them, you might someday find yourself without one. This little project shows you how to make a simple analog ADC using RC theory.

Posted February 8, 2009 by Chris

We’ve seen quite a few DIY Oscilloscopes and here one more! This one is rather unique in that it as minimal as possible using a 12xxxx series PIC and outputting to a standard TV.

Posted February 6, 2009 by Chris

Hot Wheels makes a cheap radar gun that can actually work to clock the speed of objects. If you’ve ever been interested in radar this is a great place to start. The circuitry inside is as simple as it gets for radar (which is still fairly complex). Take a look!

Posted February 4, 2009 by Chris

This project is another on the cheap wifi-booster. It uses a similar principle of a metallic parabola around the wifi antenna. I questions the quality of IKEA products for this use, but that’s for you guys to decide.

Posted January 19, 2009 by Chris

For any type of security, a simple keypad & pin number is often more than enough. This project gives you a look at a professional way of designing and implementing a simple pic based keypad access terminal. The final output switches relays which can go to whatever normal AC device you want to access (turn on).

Posted January 18, 2009 by Chris

The keyboard has been a standard input device for several decades now so understanding how it works is rather important. This project goes through the process of creating the software for an 8051 microcontroller that can understand keyboard input. Software & Hardware schematics provided!

Posted January 17, 2009 by Chris

Today’s project is an old fashioned one for amateurs and experts: The Battery Tester. It checks to see if the battery has any juice left to power appliances. The design is purely analog so parts are cheap and the tester is very small. Take a look!