compost-LORAWAN-heltec-cubecell-AB02-solar-ds18B20

Solar powered, LORAWAN temperature sensor for compost heaps; DS18B20 for the temperator, AB02 from Cubecell, Heltec for the LORAWAN part. Lithiumcell and small solar power for energy.

A simple 3D printed holder that holds a solar panel (with plenty of silicon cauking to keep things waterproof), a small lithium ion battery and an AB02.

The unit has a metal stick that contains two DS18B20 temperature sensors, with a third on the PCB.

The PBC is held inside the unit; with the LoraWAN antenna going into the handle.

Code is stock example (see downloads); and the things network feeds things into the venerable RRDTools and MRTG. The graphs typically look like: