So i am growing mushrooms at the moment as a hobby and i am looking into an easier way to manage my grow rooms climate.
Eventually i would like to upscale and use the Pi as the control unit so i am starting off small with the Pi as a proof of concept.
I have seen it used as a green house climate controller but not much info on how many sensors and other things are hooked up to the Pi.
Not knowing much about the GPIO pins and how many extra bits and pieces i can hook up to the Pi i would really appreciate some advice on what i have in mind and if it's doable.
What i am thinking of doing is setting up a unit with one of the small lcd displays with buttons on it, i think it's the 16x2 or if i can find a 20x4 with buttons that would be awesome. It would also have a humidity/temp sensor along with a Co2 sensor eventually and a set of relays for turning 12 volt pc fans on and off.
I have seen a remote control unit for turning on and off remote controlled power board outlets, however the power board that comes with the RC Pi unit isn't sold in Australia, i have seen this and would like to know if it could also be turned on and off through the Pi https://www.hisgifts.com.au/remote-control-powerboard/ Operates at 433.92 MHz
I know it's going to require coding to set all up and i can figure that all out once i get my head around the basics of Python and start the coding process.
So the way i would set it up is to have a 12 volt power supply to a box housing the Pi, relays and screen. The Pi would monitor humidity, temperatures and eventually Co2 levels. Once the humidity drops below a set value the Pi would activate one of the outlets on the power board and a pond fogger would be turned on, at the same time one of the relays would activate turning on a pc fan. Once the humidity has reached a set point the fan and pond fogger would shut off. I would use the C02 sensor to turn on a second fan to allow fresh air into the grow room.
Reason for the RC power board is so i don't need an electrician to connect up 240 volts to any relays.
i would also like to be able to have a battery backup in the box if the power goes out, when on battery backup it would just monitor what's happening in the grow room and not activate anything.
Eventually and if possible i would have 4 humidity/temperature sensors and 4 Co2 sensors to manage 4 separate grow rooms all from tho one unit.
Until i get to that point i will probably use another remote controlled power outlet to control lighting.
What would you all suggest is the best model Pi to use for this application?
Any advice or info would be greatly appreciated.