Sorry - I am totally newbe here. But I want to build a solution which can control heating and cooling for my two new fermenters and came across Spark 4 and think this is the solution.
I have read a lot of posts but I’m still not sure what hardware to order.
Could someone please help me out?
My request goes like this:
I have two new jacketed unitanks with thermowells. Fermenters are mounted with 500 w. 230 V AC heating elements Heating Element, 2" 500W 230V, EU For Unitanks etc, Schuko(EU) Plug - Brewtools EU.
For cooling I use a glycol chiller with a submerged pump for each fermenter. Pumps are also 230 V AC. Teichpumpe 1500-3000L/h Garten Koi Springbrunnen Aquarium Tauchpumpe Super ECO | eBay
Currently I use an Inkbird 308 Wifi for each device (chiller and the two fermenters) but I have issues when I want to cold crash beer in one tank and hold the other one at e.g. 19 degrees. Then I get an overshoot in cooling in the tank with 19 degrees. And also overshoot challengens when heating.
As I understand from reading on the homepage and also in the this forum I can solve the issues with a Spark 4 and a Raspberry PI. But unfortunately I have no clue what else to order. Of cause some temperature sensors and I gues also some relays?
Ideally the equipment can be wall mounted on a Din rail on the wall. Second priority is in a box on the wall.
For output to the pumps, heating elements and the glycol chiller I want to use something like this: Finder stikdåse Schuko til DIN skinne m/LED, 5 stk | 07.99.00 | LavprisEL.dk.
If it makes any big difference pricewise I can use one of my old Inkbird controllers for controlling the chiller and then only Spark for pump and heating elements to the fermenters.
I would appreciate details - what can I buy in the BrewPi shop and what do I have to buy somewhere else?
Feel free to ask for more details.
Best regards and thanks a lot,