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Hi All, I've taken some code that handles Victron's VE.Direct protocol (Smart Shunt) and added in CAN Bus / PylonTech protocol connections, this allows the State of Charge, Voltage, Amps etc all be sent to the inverter - any one that supports the PylonTech protocol. I have it connected to a...

Quick peek to what's coming, the web page will work with the esp that is already in use, the display support requires an m5stack core or core 2. And hopefully this release won't require any programming knowledge as you'll just be able to use the esp flasher and then configure everything after...

Packets of data is sent every 1 second, but it's not everything, so I've seen H1 to H17 data sent for a while, then it will swap to send the Voltage, SOC, Current every second for a while. This to me is a bug by Victron but I can't report it to them as there seems to be no public support to go...

I've made changes to the code and found everything is working correctly now, you'll find the updated code on github.

short answer, Doesn't run any faster. Long answer. The data from the victron is done via push, the esp32 has to receive this in real time, any delay and the data is lost. This data is sent every second, so the code uses a task (thread) that has the highest priority to handle this receiving of...

Should work, the pylontech option for enable/ disabled just changes some of the commands sent to the inverter, even disabled it's using a form of pylontech modbus to communicate. So I'd definitely recommend trying. If you have any issues let me know, after I've done the latest release with web...

@ChrisG @ScrotusGobbleBottom Glad you have worked things out, am sorry that I've not been around, I had some illness and life that took over for quite a while. As well as the web GUI the code also runs on Core and Core2 M5Stacks...

Test on the jk BMS plug, from ground and make sure your meter increases as you go along the pins. G to 1, g to 2, go to 3, that will show if you've got a backwards one.

You wouldn't need $3000 for it. Buy the BMS and attach it to your current batteries and then develop against that, I don't see the need for anything else?

I'd suggest just wiring it to the batteries and then check the output before putting anything on it. I feed the 5v out to the Vin of the esp32, I don't use any other regulator inline, did once but blew the regulator and dc-dc convertor but that's a different story!

not for battery data (as far as am aware) can't see an option for it. Seplos has rs485 and CAN comms, so possibly CAN to Solis and then monitor over the 485?

Your CS pin must be GPIO2 unless you change the line #define CAN_CS_PIN 2 // CAN CS PIN in config.h The serial info should show if the CAN is detected, then will start showing if it's sending CAN messages and if it's successful or not. Make sure to be running it in full...

I've done it, but i did my 17th Edition cert some years ago so i put the BS number as my qualification. Don't believe you'd need it though, can just put self install on the application.

Yeah you do get drift, the BMS's and my Victron are all different, I trust the Victron with the SOC and it seems the most stable in my system, the Victron can be made to sync to 100% by tweaking the settings, it's difficult to get it to do this from solar though as it depends on voltage and...

As above, BMS connects to batteries, I don't switch the negative at the batteries, I just have a MCB for the positive. Smart Shunt is connected to Inverter Neg and then on to BMS's common neg (i have 2 BMS's). I then have a MCB switching the Positive and Negative after the shunt to the Inverter...

I take it the disappointment is because I didn't give you the answer you wanted to hear? Multiple BMS's and Battery packs isn't actually that difficult to do, just don't mix battery types use only one in all the battery packs, I have multiple BMS's and Battery packs for almost a year without...

I float and equalise at 55.2. Overcharge SOC means don't charge when the battery SOC meets or above this. OverDischarge SOC means charge the batteries (from grid) if the SOC goes below this. Discharge Depth means how much of the SOC should be used.

If it supports pylontech batteries over can bus then yes it should work fine.

The regulations are based on the inverter size not your export limitation, it's only g100 when the dno states you can't export your full rate and therefore needs limiting. No idea why SP Networks is changing their tune, I paid £250 to them to sign a contract to even allow me to connect my 6kw...

Should be possible to change the code, the routines for sending the data are all in CANBUS.cpp, so changing to send the data over serial than CAN shouldn't take much effort. New version will support the m5stack with commu unit, the commu has can and 485 connections, so this might be a better...

Yes that's fine. Ps. On your previous post, I'd recommend not changing any pin allocation as am changing the way the configuration works in the future and updates to make it easier for everyone, so please stick to the pins unless you know what you're doing.

£4 sounds expensive to be honest.

The inverter will go in to alarm if your BMS disconnects the batteries, this can then mean the inverter won't use the batteries whilst it's in this state.

The 5v pin on the shunt is actually power out not in. The idea of it is to power an isolated interface. You don't need that as your only using ground and signal.

Need to be careful, in the UK you're not allowed to connect any inverter over 3.68kw without permission from the DNO, it doesn't matter if you limit it either as it's in the regs, 3.68kw is only notifiable, over that and you need DNO contract at a cost.

The configuration for the mqtt commands is in a file called homeassistant.yaml, but I think it's in the old format so I'll update it later today. You'll need an mqtt server running or be using the home assistant add on mqtt server. Feel free to ask what ever, am more than happy to share what...

Ah am really glad it's working. Can everyone using this solution please drop in here what you're using, victron device and inverter, I can then make a list of compatible hardware on my github.

I've updated the file to be the new way HomeAsssistant likes the MQTT configuration. In case you don't know, you need the Mosquitto add on, and under configuration put: - username: emon password: emonmqtt password "p" needs to be inline with the "u" of username.

Yep, just use User defined and leave pylontech switch off.