DIY Annoy-a-tron from ThinkGeek
Recently I was browsing ThinkGeek when I came across a little gadget called the annoy-a-tron. It’s a device that you can hide somewhere, turn it on and then it gives a short 2 kHz or 12 kHz beep every two to eight minutes. According to the site, this is extremely annoying for any unsuspecting victim. I made my own version.
Recently I was browsing ThinkGeek when I came across this little gadget: the annoy-a-tron. It’s a device that you can hide somewhere, turn it on and then it gives a short 2 kHz or 12 kHz beep every two to eight minutes. According to the site, this is extremely annoying for any unsuspecting victim.
I found this device pretty funny but didn’t feel like paying $ 9,99 + international postage fees so I decided to build one myself using an AT90S2313 microcontroller (the predecessor of the ATTiny2313, got a lot of them for free), a small piezo speaker (also got a lot of them for free) and a few other bits ‘n pieces (also free).
The result is not as small as the ThinkGeek version but probably equally annoying. Also, my version uses a 10 kHz tone instead of 12 kHz because that was easier to time in my code. It looks like this:
The source code is available for download here.
Hi. Wouldn’t this be easier to make with a 555? I don’t have a programmer for a microcontroller, and I would like to make this device. Any help will be appreciated. Thanks.