I have build myself a poolhouse (the actual pool is planned to be installed in 2020)
For the automation of the pool and poolhouse I used a rpi (placed in a 3d printed enclosure), a denkovi input module, a simple 8 port 5 volt relais module, and power relais.
On the rpi I installed domoticz, and the in and output of that domoticz I integrated as a remote server in machinon.
I will be controlling/switching:
-the water temp
-the water quality
-the temp and lights of the sauna
-the lights of the poolhouse and the pool
-the duration of filtration
-the 12V garden lights will get there power from 2 large car batteries that I charge with a 12V solarpanel and conrtroller.
THE SAUNA:
I bought a second hand sauna with no electronics in. The sauna is controlled with a old school timer and thermostat.
I then disconnected the old controls and connected the lights and heaters to domoticz.
I placed 2 connections for the heating and lights and a utp cable for the temp/humidity sensor.
I also installed a temp/humidity viewer and a bluetooth radio module. So that I can listen to music. I also switched the lights to led lighting that can dim.
Domotics 