Decoding the DALY SmartBMS protocol

KaFun

Solar Enthusiast
Joined
Feb 8, 2021
Messages
34
Have you tried logging the Bluetooth protocol that is sent between the BMS and e.g. your phone with an ordinary Bluetooth sniffer/logger? I've heard, there are a few good sniffer out there and you might be able to see, what protocol the BMS BT adapter is actually using. As the Bluetooth adapter connects to the same port as the UART, I'd assume, at least the messages are the same. But no guarantee on that ...
 

Marv085

New Member
Joined
Nov 29, 2021
Messages
5
Have you tried logging the Bluetooth protocol that is sent between the BMS and e.g. your phone with an ordinary Bluetooth sniffer/logger? I've heard, there are a few good sniffer out there and you might be able to see, what protocol the BMS BT adapter is actually using. As the Bluetooth adapter connects to the same port as the UART, I'd assume, at least the messages are the same. But no guarantee on that ...
With my phone i don't get any usable results. With for example the "nrRF Connect" app i only see the values i already know from the gatt commands from my raspberry. I now ordered a "Adafruit Bluefruit LE Sniffer", we'll see if i get some more informations out of that. I will let you know if I'm succesfull.
 
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