Relais Module http://henrysbench.capnfatz.com/henrys-bench/arduino-output-devices/5-volt-4-channel-arduino-relay-module-user-manual/
NetAtmo Smarthome API Documentation https://dev.netatmo.com/resources/technical/reference/smarthomeapi
Pi 3 b - schematic: https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-3B-V1.2-Schematics.pdf