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You might look at my Sunny Island agent ... there's no docs but all the logic is controlled by javascript - easy to read. I use a raspberry PI with a CAN/RS485 hat as a BMS/controller for the SI. Here's the code: https://github.com/sshoecraft/solardirector/tree/main/agents/si Here's the hat...

found it: https://diysolarforum.com/threads/jbd-bms-wi-fi-module.17252/page-8#post-317729

I did not ... someone in this thread actually did something similar - look at previous posts. I think he even shared his project.

Sorry haven't checked in here in a while ... and not getting email reminders for activity anymore. Here's a static compiled version for debian bullseye (11) 64-bit made on a RPI4B+

Something to consider: I set my phone hotspot to 2.4Ghz. It will definitely not work if your hotspot is in 5Ghz mode.

If you want to use bluetooth you would probably want to use the ESP32 - you might look previously in this thread as shadowsteve has already done this. Using the ESP32 it would be pretty easy to control it via an android app. There are a ton of vids on youtube showing how to control a relay (to...

I added an -X option to jbdtool to "reset" the BMS but I'm not totally sure what it does (it's not documented and I only learned of it from debugging the bluetooth stuff). You might try it and see if it works for you. I think it might also "unstick" the BMS if it has an error.

I just tried this on a freshly written esp - it connected to my phone's hotspot. Then I connected my computer to the same hotspot and was able to connect to the ESP page.

I make changes to the BMS via my grafa page - but it calls a web service on my RPI which in turn just calls jbdtool. I have some of these active balancers and have been thinking about doing exactly that (controlling a relay to turn it on via the esp). I would say it's possible, yes. I...

The RS485 is the UART bms with the 485 dongle. It depends on how you are going to read it. Will you use the UART on the rPI or will you get a USB RS485 for the rPI?

for balance, it's an eeprom parameter: BatteryConfig use -r BatteryConfig to read it -w BatteryConfig <value> to write it use -n for numeric outout only (no translation)

I used the attached SMA design for my system. It works extremely well and I much prefer AC coupled to DC coupled. I am running 3xSB6.0-US and 4xSI6048-US.

I've seen the yasdi2mqtt and it seems like a pretty good product. I think daklein runs it - you might ask him what he thinks. My software was created just for the DIY lithium batts and grew from there. Nowadays I have JavaScript scripts and I can write directly to influxdb so no need for...

I currently use 50A breakers on mine. I have 4 Sunny Islands. I have seen surges of 31k watts (5 ton AC starting up and dryer running) and it didnt trip the breakers although I think constant use definitely would do it. Then again, if I'm using anywhere near 160 amps (80%/breaker * 4) for...

The SI agent (agents/si) acts as a "BMS" to the Sunny Island. I have an actual hardware BMS (JBD) on my battery packs. I then have a Raspberry PI with a CAN/RS485 card which is connected to the Sunny Island. The si agent talks to the Sunny Island via the CAN bus and acts as the external BMS...

Chris, I'll write up docs for it this w/e ... I don't have any all atm so I'll try to get something going as a base

I was thinking about the issue you have with MQTT; it might be due to the MQTT version - I specify MQTT_5 in the connection options and SignalK might not support 5. I compiled a version that uses MQTT 3. The version (attached) is "jbdtool version 1.8 build 202204111732." Please test against...

It will lock the target (-t <transports:target>), so if you use ttyS0 on one and ttyS1 on another it will lock them individually. Please test to confirm.

OK can you confirm it is no longer giving no output on 1st connection? I have yet to test against the signalK MQTT server ... was too busy last w/e

You're using a serial connection and so only one should be using it at a given time. I've updated the program so that it will lock the target - so 2 instances of jbdtool will not be able to use it at the same time. The default behavior is to wait until the resource is free. I've added the...

OK that's very strange. Are you sure nothing else is talking to the BMS while you are pulling data from it? Because I'm asking the BMS for the "basic information and status" (DD A5 03) and it's returning the hardware version info (DD 05). It's supposed to return DD 03 (basic info). I've...

on the FIRST time executing it, can you give me the output when using -d 6? I'll load up SignalK on a VM and test against it. I'm using the PAHO client - there may be a compatibility issue.

just checked again; they look to be pretty even all afternoon even though #2 is still slightly higher - I'm going to leave it alone for now. Boy you can tell when that damn dryer kicks on.

The others fluctuate a little bit but #2 is almost always on top ... I'm wondering if it could be the breaker. I'll keep an eye on it and pop in a spare breaker if it becomes a problem.

Batts are charged and am feeding the excess to the grid atm I turned on current data collection and it's pretty even: I'll leave it going the rest of the afternoon and check it this eve

Try this one for a PI3B 32-bit jbdtool: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, for GNU/Linux 3.2.0, BuildID[sha1]=e633c55ab3293efb0c64ec1ebafd6fbd54cce8a1, with debug_info, not stripped

Yea, I keep an eye on the busbars and underneath them is a thin piece of polyethylene. It's been over a year since I got them but I vaguely remember something about the total size of the breakers in the panel and the manuf rating. Also the wiring is #8 90 deg THHN - which I got free. Going...

Wow my system is very similar to this - with the exception that my Sunny Islands control the generator - it starts the gen when the grid is out and the batteries are low then turns it off when the batts are charged. Similarly, I have a manual transfer switch at my main panel to switch between...

ok here's a statically compiled version for the PI4B 64-bit. please test it. this wont work if you're running a 32-bit OS on it (uname -m will tell you)

What system/os are you running it on? Raspberry PI? If so, which one? if not, Windows? Linux?

So it doesn't work unless you enable debugging output? Oh that's going to be fun to chase down .. I'll take a look at it.

That's correct - it has to read every register from the eeprom and it takes a while - even over wifi

Yes, I wrote the JBDTOOL for this adapter See Post #9: https://diysolarforum.com/threads/jbd-bms-wi-fi-module.17252/post-197205

Yep... I use a 10omh ceramic cap ... achieves the same result

yep you'd have to wait it out until the caps drained otherwise. I'm too impatient for that ;)