Well I didn’t have any of the required tools at all and to be honest that $150 probably includes some of the wrong pieces that I ordered lol and never returned lol

Actually that was my route. I learned the hard way that the D1 minis don’t work lol

If you feel like taking on a project I’d say go with making your own adapters and bring it into something like home assistant https://github.com/SwiCago/HeatPump cost me around $150 to get these set up for my 8 splits.