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tfyoung / esphome-junctek_kgf

Component for esphome to read status from a Junctek KG-F coulometer/battery monitor via UART
MIT License
27 stars 20 forks source link

how to make connections #10

Open niurz opened 1 year ago

niurz commented 1 year ago

hi, thank you for the work you are doing. I've been trying to use this method for several days but I can't read the data coming from the shunt. can you kindly tell us how to connect the shunt: to which of the two ports: the one of the display or the other? the order of the cables to the rs-485 converter? which gpio on the esp32? I tried all possible combinations but I can't read any data. please help me A thousand thanks

Quattrohead commented 1 year ago

To read the data, you only need to connect GND and A of the RS485 port to your ESP OR TTL to USB device. Yes it is not RS485 so much as basic TTL with text output. I am able to read the output with a TTL converter into windows running YAT (Yet Another Terminal) This is what you should see, cross reference to the manual to see what it all means.

:R50=1,:r50=1,208,5232,5710,923007,24276928,132091777,7900119,137,0,0,0,973,2154, :R51=1,:r51=1,142,0,0,0,0,0,100,0,0,13000,100,100,100,0,0,1,

niurz commented 1 year ago

I also knew this method but the problem is how do you import these data into HA? How do you create battery percentage, current and voltage sensor?

Quattrohead commented 1 year ago

I dunno, I cannot for the life of me get this stuff to work. At least my devices seem to stick in ESPhome now with a static IP.

tfyoung commented 1 year ago

I have an cheap rs485 ttl (something like https://www.aliexpress.com/item/1005001621746811.html) hooked up to the non display port. I forget the pin wiring, but I think the manual covers it.

I then have the other side of the rs485 hooked up the esp pins which i then define in the yaml as the uart. I also give it vcc and gnd on the uart side too.