A Raspberry Pi + DHT22 used to monitor temperature and humidity in one of the rooms in KSJ
Uses a D1 Mini and Arduino code with an HTU21D for ambient sensing and two DS18B20 OneWire sensors for inlet and outlet temperature measurement. The derivative of the temperature difference across the heat pump detects the heat pump mode.
Test channel to receive data from a Cockle
A TiffinTin-Cockle test
ESP in deep sleep mode using 2 pcs AA 1.5V batteries. Wakes up and reports to ThingSpeak every 15 minutes to conserve power. DHT-11 & LDR forms the Temp&Humidity and Ambient Light sensors.
Ambient light sensor on Nexus device
The cattle temperature sensor
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