to control the loads through internet
Uses Raspberry Pi with Dallas DS18B20 sensors and BMP180 for pressure. Uses udp comms to Wemos D1 mini for switching relays for pump and pond heater. Monitors Koi pond temperature and shack (with water pipes in loft) sending email and ThingTweet update
ESP-01 DHT11 Temperature, Humidity, LED Light and ESP-01 Free Heap Monitor.