So, I am back at it again tinkering. I was going to create my own thing and then thought that HestiaPi may be able to accommodate what I am after. I would like to integrate 3 temperature sensors and a relay into a HestiaPi based system to control a simple water pump based on temperature readings. Basically, their will be a sensor installed inside of the solar collector and inside of a collection tank and one reading outside temperature. When the temperature of the solar collector reaches a set point, the pump engages. When the temperature of the tank hits a set point, the pump quits. If the temperature of the collector drops below a set point, the pump quits. It’s really not that complicated.
I have a board design I am debating on. I may use it and then use HestiaPi to control it all. I have two basic designs. One with an LCD screen / buttons and one without.
The link below shows the DIY system I am building. I want to replace the commercially available controller with the one I build instead. Also, to my knowledge their aren’t any good commercial options out there that have a web interface like HestiaPi / OpenHab does.