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RFID proximity on-off switch for dog collar (the smaller the better). — Parallax Forums

RFID proximity on-off switch for dog collar (the smaller the better).

BadDogBadDog Posts: 13
in General Discussion
I am looking for any suggestions on how I can make a very small RFID switch system that is ON when the RFID chip is not nearby and then shuts off when the RFID is close by. They will be within 4 inches or so. I want my cat or dog to have the RFID chip on their collar, and then have the on/off reader in a small package, as small as possible. Can anyone point me in the right direction?

Comments

  • kwinnkwinn Posts: 8,697
    Take a look at the RFID Reader Serial and Tag Sampler Kit Product ID: 32390
    The simplest way to read tags and control led would be to use a microcontroller. It might be possible to use one or two 555 timers to trigger the read and drive the led but that needs to be verified.
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