I am looking to setup a remote Raspberry Pi to monitor water levels in a tank. There is no power supply but Wi-Fi should be ok. 1 reading a day would probably be fine but we could maybe do it every hour. I am wondering what solutions there are out there. I can see a few solutions:
- Run the Pi directly on solar panels. When there is sun we monitor and report. When the sun goes in the Pi dies, when the sun comes out the Pi boots back up again
- same as above but with a battery that's charged from solar.
- Pi is somehow turned on by an external something (maybe a
HAT). It measures / reports then shuts down. Solar panels charge a battery.
So I could do with some on advice on issues with a Pi just dying when power drops and some suggestions on how to turn on a pi every hour.