Gambit

Confirmed 1.14 is the correct and most recent version at this time.

@WannabeSolarSparky Thanks for the advice. I managed to get all the BMS metrics from my 3 x Sunsynk 5.32 (SUN-BATT-5.32) batteries using a RS-485 transceiver on an ESP32 with ESPHome, but it turned out to be a bit of a mission to create the frankenstein RS485 cable to link all 3 batteries and the Sunsynk inverter. Unfortunately, you can't get the BMS metrics directly from the master battery like you can over RS232 (or I didn't find an easy way to do that) and instead have to setup an RS485 bus between all the batteries to connect to query each battery BMS directly. What makes it tricky with the Sunsynk batteries is that they use RJ45 sockets, which also share the CAN bus so I had to crimp a weird cable with 5 x RJ45 plugs and split off the CAN connection to the Inverter. Super happy it all worked first time but I'm wondering if there was an easier way to cable it all up.

I now have a single ESP32 microcontroller powered by the inverter's 12V rail pulling metrics from 3 batteries and 1 inverter and pushing to Home Assistant.

I take my old batteries to my local Battery Centre and they give me cash for them.

@Gambit
the rs232 on most bms's is usually for configuration software like pbms etc that connects to your pc/laptop
rs485 is usually for the monitoring software and inter battery comms etc
If your battery has a pacebms/jkbms/seplosbms etc then definitely the rs485 port will work for most monitoring systems

@slipx The battery was delivered today. Looks like it was manufactured 1 March 2023. So old stock :(

Here you go
https://github.com/syssi/esphome-pace-bms
I tested this with my pacebms and esp32 works perfectly.

https://www.jendustries.co.za/sun-batt-lv

Nice clean install. Great job 👍

Hi, I love it, I have 2x Luxtek 5kw inverters in parallel, connected to 4 batteries with 24 Solar Panels. Took me a while to get all the sensors connected over time and into HA

Hi Gambit

Yes ... I tried Modbus 1 & 2 also tried setting up the Inverter as Slave and Master with the same results.
 

You want this one without firmware https://smarthomeintegrations.co.za/product/smartdeyedonglev4-intl-shipment/ . I use this shield and it works great with my Sunsynk 8kW.

I am using a 5v TTL to RS485 module ... I got 2 sets on from Comunica and one from Micro Robotics ... This may very well be my problem ... I will try source a 3.3v RS485 board.

Thanks.
No, unfortunately. I live in an appartment, and we have a gen for the building.
 
So my story goes like this (if you have the time, lol):
I'm an elec engineer, and the general idea with people is that engineers know everything, which we dont. When it comes to anything solar, the assumption is made very strongly that we know everything. Trust me, we dont!!!
 
So I had a family member ask me to take a look at his Sunsynk install which was done by a fly by night installer. The system was not saving him any money. He assumed I know everything as I said above. In anycase I did the research and started learning the system and figured I actually enjoyed this stuff. I managed to fix his system, pointed out the errors and its working like a charm. Got the work modes, timers etc sorted.
 
Word got out that I can fix and set inverters and solar setups and fast forward 6 months, and here we are. I've done consults for people on how to make their setup better, also consults for guys looking to go solar and also fixing up many messups made by installers. It is unreal the amount of people that are getting scammed with installers that do shoddy work. Theres also a lot of installers that are really good at installing, but really bad at setting things up to work and get a quick payback time. 
 
 
I'm not going to say that I know my stuff. I think I have a lot of stuff to learn. A lot! I mean it.
I do it for free, and I hope to learn from this forum.
 
 
If you've read up till here on this reply, thanks! LOL sorry for the long post.
 

It is highly possible that my installer didn't fit them as they made so many other mistakes that we are no longer on speaking terms. I had to get another company to fix basic things like the neutral earth bonding etc. I'll probably speak to that company and see what they have to say.

That is strange never found one that didn't have the 2 ferrite coils. Maybe your installer never fitted them.
These work similar to the ones you find on VGA cables. The DC power also conducts broadband spectrum on unbalanced impedance wires from the switched current transients. The purpose of this Ferrite is to act as a BALUN or to BALance UNbalanced lines at RF frequencies. The other functional name is a Common Mode (CM) Choke. Since the AC-DC converters carry lots of harmonics up to 10MHz this ferrite raises the impedance of both lines DC+/- such that they become balanced radiators and thus cancel each other out for far-field EMI emissions. It might help you never know ask your installer to fit one as close as possible to the battery terminal at the inverter.

Correct, on inverter type aircons it is no longer a problem, however going one size bigger than recommended for the floor size is not a problem if you have high ceilings.

Your graph is displaying the data using your local time SAST (GMT+2) and the exported CSV is in UTC (GMT+0) timezone. It is common for data to be stored in UTC and your user interface to display in local time.

@rgt.dnl glad you sorted it out. Btw I've moved over to the Open Meteo solar forecast https://github.com/rany2/ha-open-meteo-solar-forecast. It allows for more api calls and you can add multiple arrays. I've also moved the graph to plotly. The code is on the GitHub.
 

Gotcha. Thanks 
O and the R7 resistor was soldered off 6 months ago. So the board must just have gotten cooked now. 

Currently it looks like new stock will be arriving around 23/24th

v4.34.0
What's Changed
🚀 Exciting New Features
- feat: You can now visualise the efficiency of your MPPT strings by adding the `efficiency` attribute to your solar section together with the `pv[1-4]_max_power` (Maximum power of the MPPT based on the number and size of panels). The `efficiency` attribute can be one of four numeric values and activates the following display modes
0 - Disabled  1 - Graphic display  2 - Text display  3 - Graphic and text display
This is disabled by default and you must set the desired display mode and specify the pv[x]_max_power in order to display this extra data.
Some examples below

1 - Graphic display

2 - Text display

3 - Graphic and text display
🐛 Patches & Bug Fixes
- fix: layout improvements. Remove space from battery soc.

**Full Changelog**: https://github.com/slipx06/sunsynk-power-flow-card/compare/v4.33.0...v4.34.0

Sure, that's why you take a backup, and can reinstall it if you ever need to do an upgrade. And while doing so, log all the data written out on the serial port to see how it is done 😛

Thanks Gambit have not been able to get around getting back to you, this sorted out my issue.

No they didn't but to be fair I didn't ask for it as I don't have their batteries.

You have to setup an automation to get new data.

alias: Solcast_update description: New API call Solcast trigger: - platform: time_pattern hours: /4 condition: - condition: sun before: sunset after: sunrise action: - service: solcast_solar.update_forecasts data: {} mode: single