weather

I have a Pimoroni weather station that I have been poking at, on and off, for a year or so. The first setup was a Pi Zero in a stevenson screen powered by battery. This doesn’t work well when its cold.

The 2nd approach was to run a cat6 cable out the house, entrench it over the lawn, and into the shed near the sensor. I can then use the cat6 cable to deliver power (with PoE) and networking to a raspberry Pi, with the sensor plugged in.

I wrote a custom HTML graph library for a air quality meter a few years back, and a reused it for this project. It had a few issues:

• It did many many small writes to the Pi’s SD card, resulting in sadness. This was an attempt to keep history through restarts of the program.
• It kept all history in memory, resulting in an OOM.

I think I’ve fixed both of these and have set up Prometheus exporting as well. Hopefully we will get some weather data.