Have you ever had a water leak that damaged your property? I know I did when a kitchen faucet started leaking. I decided to put together an Arduino based solution using an ATtiny85 MCU. This was my first foray into the world of the ATtiny MCU family, and I was impressed by the functionality they afford at their price point and in their form factor.
The design goals were:
- They had to be cheap
- They had to run on batteries and have a long life
- They had to be small
- They had to be loud
- They had to be simple
