A portable sensor station located in different parts of the garden, so we can measure conditions before planting
Wood-fired pizza oven instrumentation via Raspberry Pi and 7 thermocouples
Tracking drift in time with an ATMega328 acting as the RTC (using 32.768 kHz crystal)
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.