@guystewart and anyone @Victron in the know I’ve been hearing that the Lynx Distributor is going to be able to feed its status back to the GX device via the VE.CAN for those of us that have built in BMS’s which negates the need for smart shunt. Can anyone confirm this is in the works?
There is a ve can lynx shunt is that what you are talking about? The battery BMS SOC and victron smart shunts are not really that accurate at SOC estimation. You just need to pick one and trust its somewhere correct. I am pretty sure the current lynx shunt has some limitations.
No I’m hearing that it’s to be implemented direct from the Lynx to the GX device, the shunt will fight with the batteries BMS so can’t have a shunt and the battery BMS data will be more accurate as it’s reading the cells. I’ve got third one on the way for another rack of batteries so would be nice to see all three light up and feed that data back
The Lynx Distributor doesn’t have VE.Can
The functionality that you’re talking about is IF the unit is connected to a Lynx Smart BMS, which does have VE.Can. If the Lynx Distributor is connected to a Lynx Smart BMS, then the Distributor can report its fuse status to the BMS, which reports it to the GX device.
This would not eliminate any need for battery monitors, since it’s only fuse status, but the Lynx Smart BMS, when properly connected to Victron Lithium Smart batteries (or, for the Lynx Smart BMS NG, to Victron Lithium NG batteries) will act as a battery monitor and report SOC to the GX device as well.
Where are you hearing these things? It may be worth one of us popping in there to dispel some myths.
Thanks @Justin I’m using pylontech hence have no need for the smart BMS which I’m assuming will fight with the batteries own BMS that’s a bit of a shame that would have been good but still won’t change it, I’ll just keep it the geto way and power it up without it reporting then lol. PS doesn’t matter to me if it’s to be implemented anyway as I’m matching up the ones that I have in the build already, But here is the link to your distro
Ahhh interesting, I see what they’re saying; it would still require another component, in the case of that listing they’re talking about that information being sent to a Lynx Shunt VE.Can, which would then send the information out to the GX device. I haven’t personally heard of that planned future functionality upgrade, but it’ll be a neat function when it happens. Still no direct comms from a Distributor straight to the GX, though, so the old-school way of lighting up the LED indicators still the best way to go in your case, yep!
pls check out these open-source code:
It connects the I2C bus via USB and simulaes parts of Lynx BMS to show the fuses.
Looks like this with a 6 EUR PCB from AliExpress:
Thanks second time you’ve come with the goods, Do you have to SSH the code into the Cerbo GX as I don’t want to be doing that really but if it’s just a case of buying that thing and it working take my money now!
Yes, you have to scp (copy over ssh) the code into Venus OS and then execute install.sh. It’s all documented on the GitHub page by the author.
It’s for free, so spend you money on somebody who likes Linux und does copy and execute “./install.sh” for you
On Windows I use free version of graphical “BitVise SSH”. It does ssh and scp. After the install you can disable ssh on Venus OS.
This is how it looks like in Venus OS UI v2.
I do not have alerts for missing and/or blowing fuses available, but tested successfully. They are notified by VRM app and by mail.
Cool cheers I’ll have a look to see if I can get the unit first, I wonder if this will show up in home assistant after.
I take it I can do more than one Lynx as I will have three soon.
4 Lynx Distributors with 16 fuses are supported by Lynx BMS as well as the emulating Lynx-dbus script.
Brilliant thanks, third Lynx now in but now I’ve got to buy more battery cable to move the inverter Lynx in the middle