Solar water heating system. 30 x 58mm evacuated tubes, facing south. 180l tank. Sussex, UK. The tank is also heated by a woodstove, oil boiler or by electric immersion heater.

Water and air temperatures of my Trout pond.

Main Irrigation Channel 5K, in pumping station A12

A 3 square metre evacuated tube solar hot water system mounted on a roof with 20deg inclination and South orientation.

Monitoring the growing conditions of my garden hydroponics system. See what hydroponics is here...https://youtu.be/tzBK4QZSQaY

Main Irrigation channel 5K at station A6

State of sprinkler valves

Water level in an underground water reservoir

ESP8266 for Temperature logging for a solar water tank and the ambient conditions.

Current level and flow of farm cistern. Uses Aquaplumb water level sensor and NodeMCU(ESP8266) WiFi dev board.

Monitor water consumed in a summer house area with app 50 households. Input from 3 water meters with reed relays each giving a pulse per 100l water consumed.

Application Logs and records a residence or rental properties use of water and presents a graphic visualization of current water flow and month-to-date total use available to view on a mobile phone or computer.

Tinycontrol LAN Controller managing backup electric immersion heater. Plus data logging temperature! Idea is to log hot water use and heating - Settings heating schedules to save money based on these. Temp is taken approx 20inches below top of tank. 14

Water Pool Temperature

Temperature of hot water out from boiler