Low power ATmega/tiny with watchdog timer
At work recently, the pranks have been escalating. I’ve decided that for my next salvo, I’m going to build the most annoying beeping device I can. I’m using an ATtiny45/85 chip, programmed using the Arduino development environment. The clone army grows The device is intended to be planted somewhere near the target’s desk, and will just beep (or make some other annoying sound), every 5-8 minutes. In that respect, it’s very similar to the Annoy-a-tron that ThinkGeek sells. Three primary factors influenced the design of this, in this order: Low power consumptionInexpensiveSmall size It’s likely to take the subject days, if not weeks, to find it at that rate, so the battery needs to last for at least a few weeks. As I intend to make around 10 of these devices, keeping the cost down was important. Making this as small as possible was quite a challenge, but in the end, the largest parts were the battery and battery holder. Putting the chip to sleep when it’s idle. 1. 2. 3. 4.
Related: Raspberry Pi - Projects 1
• Arduino-low power