Monitor JK BMS with Solar Assistant?
- Thread starter Redbeardbeer
- Start date
It might work and it might not. Mine did not with any method.
can you list exactly what you used?
NCSolarGarage
13.2kW Off-Grid
- Joined
- Sep 23, 2021
- Messages
- 213
I'm using Home Assistant, not Solar assistant, but will SA not allow you to just connect via BT using an ESP32?
I'm able to run wireless with the ESP32 connecting to the JK via BT, then uploading the data via WIFI, but I'm not sure how the SA interfaces. In my scenario, its easier than fiddling with those tiny cables, and wondering if it might be an option for SA also.
I'm able to run wireless with the ESP32 connecting to the JK via BT, then uploading the data via WIFI, but I'm not sure how the SA interfaces. In my scenario, its easier than fiddling with those tiny cables, and wondering if it might be an option for SA also.
Ah ok. I will just do without it. Sadly.
If your bms has a console port and uses pylontech protocol - check out this project which is set up to report to home assistant .
It will work with either esp32 or raspberry pi.
Pages · ClassicDIY/PylonToMQTT Wiki
Reads data from the Sage BMS console port and publishes to MQTT - Pages · ClassicDIY/PylonToMQTT Wiki
github.com
I'd rather not have another rasp pi. Have one already with solar assistant. Don't think jk bms support pylontech. Solar Assistant will have to do. It does provide battery info but not accurate of course.If your bms has a console port and uses pylontech protocol - check out this project which is set up to report to home assistant .
It will work with either esp32 or raspberry pi.
Pages · ClassicDIY/PylonToMQTT Wiki
Reads data from the Sage BMS console port and publishes to MQTT - Pages · ClassicDIY/PylonToMQTT Wiki
Hi i just finish setup my connection with inverter must pv1800 and bms jk 8s
for help i can tell you buy cheapest usb ttl converter what you found and it wil work ! i use ft232 rs232 ttl inverter price like 10Euro and its not working then i order cheapest 1 euro in Poland and its working great in my case i use 8s bms witch 7s settings focus on the connector i have opositive way according to picture from seller i should have +21v on right but on my right pin its gnd! look on the picture
ps to connect to the bms i use connector from old laptop fan its 3 pin
for help i can tell you buy cheapest usb ttl converter what you found and it wil work ! i use ft232 rs232 ttl inverter price like 10Euro and its not working then i order cheapest 1 euro in Poland and its working great in my case i use 8s bms witch 7s settings focus on the connector i have opositive way according to picture from seller i should have +21v on right but on my right pin its gnd! look on the picture
ps to connect to the bms i use connector from old laptop fan its 3 pinAttachments
Any basic FT232/PL2303/CP2102 and similar based converter should do fine. Something like this for example:
Those are for the RS-485 module though, not when connecting to the TTL port directly without the converter.
My bad.
How does this one look?
USB to RS232/TTL PL2303HX Cable Adapter Module Converter Adapter For Arduino
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USB to RS232/TTL PL2303HX Cable Adapter Module Converter Adapter For Arduino
2023-03-17Beta
New features:- Add support for SRNE Split-phase inverter
- Add support for Deye 20kW and larger inverter.
- Read JK BMS highest, lowest and average cell voltage.
- Experimental support for Eskom load shedding schedules under configuration -> advanced.
- Correct problem where certain settings editable in web UI is not editable via MQTT.
Just what the Dr. ordered. Too bad I'll have to wait till it's out of beta.
much more better than nothing, beta works perfect, no problem
I found the replies on this thread super helpful so I wanted to share I have a JK B2A20S20P-Heat-CAN that I got working with Solar Assistant. This particular BMS comes with cables for the in built RS485/Can port that I could not get working no matter what I tried. However with the JK RS485 thinger plugged into the GPS port on the BMS and connected to my Gen 1 RPi Zero using this https://www.amazon.co.uk/dp/B07SD65BVF RS485 adaptor worked first try, along with my Sunsynk inverter. I had to use a powered USB hub as the Pi W struggles with powering multiple USB devices. I planned to upgrade the Pi but you can't buy official ones for love nor money in the UK and they only support the old Orange Pi 3 T. I am hoping if I hang on they will add something newer to the supported list.
It is pretty slick for relatively cheep software. Install and upgrade is easy. I like how up to date the monitoring is even on my very old Pi W and that I can see some actual battery details when away from home. The Home Assistant integration is easier than with the SunSynk dongle. However, like many I am underwhelmed by the functionality at this stage. My inverter came with the SunSynk dongle which only updates every minute (and you often need to refresh the app to see the data), so this is an improvement. The Sunsynk dongle also does not integrate with JK BMS so some of the battery information is implied or estimated. However the Sunsynk dongle does a much better job of letting you adjust the settings on the inverter and the data you get through Solar Assistant from the JK is better but still pretty limited even with the beta and you can not make any adjustments. There are several things I adjust daily on the SunSynk that I can not get to with Solar Connect and if I only had this would need to use the buttons on the inverter often
I will reserve judgement until have finished integrating it with Home Assistant, perhaps more options are exposed over MQTT, and also look forward to the rumored automation capabilities in the future. I was happy to pay for it for now but may ultimately go back to just an open source project when I have more time to do so, which will also be when I have the time to require more than this data for automation.
It is pretty slick for relatively cheep software. Install and upgrade is easy. I like how up to date the monitoring is even on my very old Pi W and that I can see some actual battery details when away from home. The Home Assistant integration is easier than with the SunSynk dongle. However, like many I am underwhelmed by the functionality at this stage. My inverter came with the SunSynk dongle which only updates every minute (and you often need to refresh the app to see the data), so this is an improvement. The Sunsynk dongle also does not integrate with JK BMS so some of the battery information is implied or estimated. However the Sunsynk dongle does a much better job of letting you adjust the settings on the inverter and the data you get through Solar Assistant from the JK is better but still pretty limited even with the beta and you can not make any adjustments. There are several things I adjust daily on the SunSynk that I can not get to with Solar Connect and if I only had this would need to use the buttons on the inverter often
I will reserve judgement until have finished integrating it with Home Assistant, perhaps more options are exposed over MQTT, and also look forward to the rumored automation capabilities in the future. I was happy to pay for it for now but may ultimately go back to just an open source project when I have more time to do so, which will also be when I have the time to require more than this data for automation.
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Thanks for the tip Admin. Ironically I just used the little share button you get next to the picture on Amazon as that is recommended on other forums, but I don't mind at all that each forum has its own rules to protect members and I will be more careful.
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