Connect to Daly BMS via TTL/UART

[sanitariu]

Why not allow direct connection via TTL to your PI3/4 device ?
It is possible and you can read data directly from Daly BMS. No need for wireless.

[Off-Grid-Garage]

This is not part of this project.

Some users don't have the Pi near their BMS and in my case, I have 12BMS plus another 10 in mobile 12V batteries which I need to monitor. Cabling impossible.

[gnuorder]

OGG, I just watched your video. Most of us don't have 22 BMS to monitor and as you found, Bluetooth just isn't reliable enough. I'm still looking for a good solution that can look at several BMS through RS485/TTL/CAN. for more reliable monitoring that doesn't require a MCU for each BMS. I currently run the standalone program, HybridInverterMon, which can monitor 1 JKBMS over RS485 (Im working on adding additional JKBMS but I'm not familiar with C# or DOTNET) and not any other brand BMS. If this project can be expanded to include RS485 communication it sounds good for even up to 10 BMS. I also don't know why peterboards require 1 board per BMS because I thought CAN also supports multi devices on a bus. You of course have your batteries all over the garage for testing and what not so cabling would be a mess but for someone like me who only plan on a few batteries in the same space, this would be ideal.