On 1/24/2011 8:00 PM, Kurt Ullman wrote:
I have something that is beeping at me exactly every two minutes. I have
ruled out the usual suspects of smoke alarms, the microwave. And even
some stranger ones like my cell phones, oven timers, etc. Sounds to me
like a battery is going dead, but can't figure out what it might be.
Having trouble tracking down where it is because of the long time frame
between beeps. Any suggestions of things to look for?


Back in the late 70's I worked at an electronic repair depot and me and
one of my coworkers built a little box with a piezoelectric buzzer and
a 555 timer that produced a short "beep" every 5 minutes or so. We hid
it in a crazy girl neighbor's closet in her apartment. It made her a lot
more crazy. We distracted her and retrieved the beeper after several
months and of course every time she asked us for assistance in
tracking down the noise, we pretended not to hear it. It was in her
bedroom closet. :-)

TDD