This is one of the oldest Electronics DIY Project Sites in the Internet. I now discovered he has a dedicated domain too. Gary from Canada has many useful schematics and even provides kits and parts.
Electronic Hobby Projects – Chemelec
Some projects that may ring bells in your DIY Brain
- A 10 Watt RMS Amplifier
- A Solar or Wind Charger/Dump Circuit
- A Cat or Dog Detector
- Inverter, 12 volt unit, Mos-Fet design
- A 25 LED Chaser”. (Sequencer)
- A Metal Detector, for Pin Pointing.
- Watt Meter”, Measures True RMS Watts
- Pulse Induction Metal Detector
A Mos-Fet Power Inverter
This circuit will provide a very stable “Square Wave” Output Voltage. Output Frequency is Adjustable and Stable. Can be used to deliver a wide range of output voltages by using appropriate turns ratio. Additional MosFets can be paralleled for higher power.
The following is my Computer Science project Comp490 and Comp492 in progress. It is a SUMO robot for our local RoboWar tournament. I have been, for the pass two years a participant of the annual RoboWar competition. So, this year I’ve decided to try to get credit for doing it.
Dave’s Sumo Robot project
“I was fortunate enough to find a professor who was willing to supervise my project Dr.Ferhat Khendek. I have decided to do the documentation in HTML format and make it public to anyone who is interested in robotics.”
There are two class of robots, remote controlled and autonomous. Remote controlled are operated by a human participant via RF link. Autonomous on the other hand has to be self contained with no human influence in its operations with the exception to its programming.
Tuxgraphics AVR Microcontroller
digital DC power supply unit – A very small an really good DC bench power supply unit for your hobby lab. It has lots of features which you normally find only in very expensive power supplies. This one is affordable, small and easy to build.
Temperature and humidity measurements with the AVR web-server – Just add this one SHT11 sensor. No other components are needed to measure temperature + humitidy + dew point.
Mini 3 digit display, a small and inexpensive voltmeter module – We build a simple and inexpensive three digit display. It’s a voltmeter module but it has also gerneral purpose digital IO pins.
Buy the Kits here – The tuxgraphics shop: shop.tuxgraphics.org – here you can get all the components needed to build a small Web-server for Instrumentation.
AVR microcontroller based ethernet device / web server, version 1.4, kit
Components and professionally etched printed circuit board for building a small web server. The main application of those web servers is not so much to provide large web pages but to be able to control hardware. You can switch something on/off, display sensor data, supervise network equipment …