August 30, 2025Aug 30 I currently have Wifi loggers on the com ports. I have my geyser on a CBi Astute (Tuya) switch and I want to switch on the geyer when the battery SOC reaches 95%. For what it's worth the batteries are 16 x Pylontech US3000C. Inverters SUN-8K-SG01LP1-EUFrom what I can gather I would need a Raspberry Pi with Solar Assistant connected to the system with a RS485 cable and then another Raspberry Pi running Home Assistant. Given that I just want the SOC, would a single RS485 cable be sufficient?
August 31, 2025Aug 31 11 hours ago, TiredTractor said:I would need a Raspberry Pi with Solar AssistantCan't you use the Aux port of the inverter? Otherwise you could use a voltage controlled circuit.
April 30Apr 30 @TiredTractor ,Only saw your port now. Getting a Pi for SA & another Pi for HA is like your are paying twice for one thing. I no longer use SA, due to the lack of battery data available, despite having a cable connected.My solution was to go with the smartdeyedongle, and run HA on RPi/PC.But you need to factor in, because you have 3 x inverters, you are going to need 3 x dongles. (1 for each inverter, irrespective if they are in parallel of 3 phase)Either way, if you go/went for SA, you will also need 3 x SA cables @ +-R600 a pop.So question is, a) do you want to control more than just your geyser. What about A/C, pool pump, gate motor etc.b) Are you a bit OCD for statistics?, c) and like to view things differently? If yes to all, then go the HA route.SA gives a nice view of things, but the fact that the graphs are not configurable, is a downer for me, + the lack of battery cell info.
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