Crystal radio mousetrap
Brian posted up this neat crystal radio mousetrap in the MAKE pool created by Kevin Norton that was featured at the 2006 New England Wireless and Steam Museum’s Yankee Steam-Up – Link.
Telecommunications
Send a SMS message to a cell phone using a GPRS modem
Max is busy lately, his latest – he shows how to send a SMS message to a cell phone using a Bluetree GPRS modem (first time I’ve seen a project with one). It’s a pretty interesting project, you could make all sorts of sensors / things with triggers that send off a SMS… Link.
HOW TO – Make a simple AM radio
Here’s how to make a fantastic (and simple) AM radio, Grendel – “I just finished making quite possibly the world’s most simple radio. I had read a few HOWTOs for constructing a crystal radio. Some links offered the basic formulas for figuring the specs needed for the coil if you wanted to tune various frequencies. […]
HOW TO – Wiring VoIP to your phone jacks
Will has a VoIP wiring guide for folks who went Vonage, etc…. “In today’s How-To, we’re taking the diagonal cutters to the Ma Bell umbilical cord and hooking up our voice over IP adapter so we can use our old phone jacks. No soldering irons or caustic acid required. This time.” – Link. Related: VoIP […]
Zasterisk – Play Zork over the phone!
Wow! Here’s voice recognition and speech synthesis for playing Infocom games (like Zork) over the phone, this might be the coolest VoIP project ever – [via] – Link.
GNU Radio
Make your own “Universal Software Radio Peripheral” – it can do things like…record every FM station, all at once “The UniversalSoftwareRadioPeripheral (USRP) is a low-cost, high speed implementation of GnuRadioHardware, developed by a team led by MattEttus. You can buy your own USRP(s); see [www.ettus.com]. The price for the motherboard is $550, and basic daughterboards […]
HOW TO – Making a hard drive laser oscilloscope
Hacked Gadgets has a follow up to to the hard drive laser oscilloscope, here’s how to make one – “A hard drive voice coil circuit is hacked to allow it to be directly connected to a stereo output. This allows audio to move the hard drive read write head. Mirrors are positioned on the center […]
