The prize this week is one of our new IR Jammer kits that was just released this week, this will let you jam the infrared receiver on any infrared remote controlled item such as a TV or stereo. If you are looking to solder together your first project this would be a great project to start with since everything is through hole (no surface mount components). This contest will run
Andrei Mehiläinen from the Tampere University of Applied Sciences has completed a number of interesting projects. Two of the most interesting ones are the Temperature Logger and the LCD Thermometer. The temperature logger uses a PIC18F4550 microcontroller and a Microchip MCP9701 for sensing the temperature. I used the LM35 in PWM Fan Controller project but based on what I see I think I will need to look at the MCP9701
Our friend Daniel Eindhoven from Megavolts found a great price on some huge used capacitors. These capacitors normally cost around $90 each, Daniel was able to pick them up for around $2 a piece! That is one hell of a huge capacitor bank on a nice budget. He also designed an interesting mechanism to tie the batteries together. Instead of using wire or busbars he designed a few laser cut
Remember the Tool Carying Robot that we featured here many months ago? Well there is now a new remote controller for that robot, the controller is universal so it can be adapted to control other robots as well. The design is based on a Parallax microcontroller and Xbee chips for communication. Thanks for the tip John
We have seen how transformers are made before but how do they actually work? Fileark gives us demonstration video about the magic that is happening inside the transformer. “The transformer is based on two principles: firstly, that an electric current can produce a magnetic field (electromagnetism) and secondly that a changing magnetic field within a coil of wire induces a voltage across the ends of the coil (electromagnetic induction). Changing
Most of us have used high power LEDs in our projects. It’s getting quite common to see 1 Amp LEDs used for lighting applications. Even though when you normally think about LEDs you envision something that is cool to the tough these high current models need heat sinking to keep their die temperatures at bay. Our friend Carl from Sweden has been doing some experiments with a super high power
Andres Guzman-Ballen, a Senior at the University of Illinois studying Computer Engineering sent us an email about his latest project. It is a Wireless Electric Mountainboard. You can see the video below of the hard wired version that he built when he wanted to debug some issues he was having with the wireless setup. “I chose a mountainboard because the truck design allows the rider to carve more since the
