If you are looking for a doorbell that you can hear from anywhere in your house have a look at this Train Whistle Doorbell by Pete Mills. He has hacked into a cheap wireless doorbell system for activation. Have a look at the video on his site for the explosive result when it is activated! Pete has a schematic on his site if you want to see how it ticks.
The prize this week is a loupe magnifier, this will let you get a close look at whatever you are working on. This contest will run for one week (May 15 – May 21, 2010) . Ending time is based on central standard time. To enter, identify the item pictured above and give an example of what can be done with it. Please do not give the answer in the
If you are a retro gamer have a look at this cool Typewriter Joystick, no it isn’t just a gutted typewriter with a joystick mashed in. Many of the keys are functional through to the computer that it is connected to. It might not be the most agile gaming interface but it is certainly one of the most creative I have seen! Via: TechEBlog
Samer Mohammed has built an optical link that can be used to send audio using an inexpensive laser beam from a laser pointer. Samer has sent in the block diagrams so you can see how the system has been constructed. “This project demonstrates the use of laser in optical communications. the project consists of a transmitter and receiver that will support a one-way communications link between two separate locations. It
Rolo’s electronics projects has an interesting technique for Desoldering an SMD IC with a Candle. This is not the correct way to remove this type of chip, use some hot air instead. He didn’t have any of the proper tools at hand and needed to get his Siteplayer up and running. A trip to the local computer shop scored him some over priced antique computer cards which had the surface
Ray Ho and Ayo Ositelu from Cornell University came up with an inexpensive (around $25) way to do eye tracking. They’re using an IR LED and an IR transistor to get the job done. They note that the best way to perform eye tracking is to use a camera and process the image but this would require more processing power than they had. We have seen eye tracking done
How far can an R/C car jump? Watch the video to see the Guiness Book World Record R/C Car Long Jump that The Gadget Show performed.
