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2.4GHz Wi-Fi Detector Ring Project

Posted by CmdrTaco on from the check-out-my-bling dept.

mohrt writes "The Wi-Fi detection ring was developed to give mobile computer users the ability to detect 802.11b/g signals, while providing a unique, fashionable and ultra-portable product package. The prototype circuit collects and rectifies an RF signal in the 2.4GHz range, whereafter an Atmel Tiny microprocessor, detecting the presence of a DC voltage, thusly engages a flashing LED. For those of you who have no excuse to wear a ring, well here it is."

2 of 248 comments (clear)

  1. Cordless Phones by ThurstonMoore · · Score: 5, Insightful

    Wouldn't cordless phones set this thing off constantly?

  2. Silliness. Using a processor is massive overkill! by b0s0z0ku · · Score: 4, Insightful
    Why use a microprocessor when you can have the DC voltage from the rectified 2.4Ghz signal turn on a transistor which activates a flashing LED (or an analog flasher circuit). Surely that kind of arrangement would use much less power than running a processor (even a "tiny" one) all of the time.

    -b.