32 April 2015
BUILD IT YOURSELF
For years, engineers and technicians have built annoying little circuits that are easily
hidden, that beep, or chirp. The AOM (Annoy-O-Matic) brings this practical joke to a
whole new level. By using the PIC12F629, this project not only beeps, but the beep
cycle appears to be completely random — maybe once every three to eight minutes.
Despite its sophisticated operation, it's very easy for any beginning electronics
student to build. Even experienced builders will find this to be a fun little project.
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By Bob Diaz