micah

• News - Circuit Bending RFID | about 5 years ago

  If this does turn out to be a 125 kHz HID card, they’re pretty easy to read and emulate. I built a really simple homebrew HID card reader a while back as a garage door opener, and just for fun I built my own emulated HID card using just an AVR and a coil.
  Here’s a schematic and details on the HID card reader. It’s just a Propeller microcontroller and a few passive components:
  http://forums.parallax.com/forums/default.aspx?f=25&m=287204
  And this is a blog post on the AVR firmware that emulates a HID card:
  http://scanwidget.livejournal.com/32928.html
  Cheers, and good luck on your quest to carry fewer things (and take more of them apart)!
  –Micah

• Product SEN-08940 | about 5 years ago

  I’m really happy to see these at Spark Fun. I’ve bought these from Parallax before, and I can vouch for how amazing these chips are. Response time is very fast, and the overall noise is quite low.
  I used two of these as servo feedback sensors to build a laser projector out of hard disk voice coils:
  http://www.flickr.com/photos/22238428@N05/2932267038/

No public wish lists :(