November 28, 2025Nov 28 A many of you know already I love data, but sometimes it can be a pain to get data streaming in reliably.There are so many different ways to do it. ESP32 with rs485 ttl, Bluetooth, arduino ttl/rs485, rs232 etc etc the list goes on.Many are very technical and need an understanding of how to program esp devices.I have now found what I think is the simplest way to connect your JKBMS batteries to home assistant.The data flows in very reliably at a decent rate (Almost realtime) and all you need is a simple rs485-usb adapter and the ability to follow some simple step.Data flows nicely into mqtt and exposes a crapton of data entities for you to use all over your HA where ever you like.You can make adjustments to the bms settings right from inside HAAnd if you too lazy or time constrained then you can get a ready done for you templates to get you goingYou can view this project on github (Yes it's open-sourced)https://github.com/jean-luc1203/jkbms-rs485-addon
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