Automation of plants
Moisture and Temperature sensor. Low power, wakes up every 30 min and sends data to the NRF24 Gateway. Arduino Pro Mini 3.3V@8MHz with voltage regulator and leds removed to achieve minimal current consumption.
Receives data from the Sensors and passes the data on to OneBackendToRuleThemAll. Just an ESP8266 with a NRF24 transceiver.
Controls a water pump in a water container and starts it when told to.