The Raspberry checks the temperatures and controls the water tank. If the water is too colt for the bathroom, heat it up. The raspberry has solid state relays to switch the heating elements and the pump.

Temperature log of solar thermal collector

Temperature and state of the Pool Solar Controller

Solar Powered WiFi Weather Station, Wemos D1 mini BME280

Zestaw 3 x Hewalex KS2100 TLP ACR, sterownik G422-P08 i podgrzewacz ciepłej wody użytkowej 300l

This is a DHT22 connected to a Particle Photon and powered by a solar pad. This is Version 0.4

One Arduino get the datas from two SolarMax MT-Serie converter. Pmax=32KW DC.

Solar Tracer Charge Controller Data Collection

SRHPE 150 litre Solar Ray Geyser Analysis. 19 direct coupled vacuum tubes 1.8m long x 58mm dia. Panel is facing North East set up at 35º to horizontal on top of flat roof. LDR estimates light intensity by Lux = 500/(Rldr)^1.3

All Temperatures from the thremo solar plant

Cerman solar battery node temperature, pressure humidity

Displaying data output from a MPPT PCM6048 solar charger. The solar charger handles 6 X 195 Watt solar panels. Battery bank is 24 Volt. Capacity is 400 Ampere Hours at 24 Volt

Impianto fotovoltaico

Mailbox Project

Solar collector performance daily statistic