jmluber writes in with another radio project – In the old days, people used radios that used a germanium diode (crystal radio) to receive am radio without the need for a battery (the radio wave powers this type of radio). This site modernizes that concept by showing you how to build a shortwave radio that […]
Chris writes – I am the author of the original Beakman’s Electric Motor page. Over the years, I have received dozens of e-mails asking me how to measure the speed of the motor. I got one such e-mail last week on the same day my Arduino Diecimila board arrived from the Make Store, so I […]
Wow, here’s how to install and boot 145 operating systems on a PC (3 Dos, 5 Windows, 137 Linux) – Link.
Amazing hard drive clock from Germany – [via] Link & translated site.
Here’s an interesting story from “Pages of Rages” about traveling with a micro-controller programmer – Yesterday I flew out of Rapid City, SD as part of some work I’m doing. I was in the security line when I heard my name paged. This crack security staff was digging through my bag. They were concerned because […]
Jason writes – Ed Paradis has put some thought into a couple of hacks for the Hot Wheels toy radar gun. You can use the radar to detect the speed of moving objects, but Ed also posted some semi-successful (and some not-so, but worth reading) experiments with using the device in a custom circuit to […]
Becky writes – Livejournal user vomitsaw has created these printed circuit board (PCB) bracelets to look like skulls! No word as to whether they’re for sale, but the etched copper and AV plug fasteners make these a geek-chic must have. Skull PCB Bracelet – [via] Link.
