Daly BMS, CAN and Arduino

[vinshou]

Hello,

I'm trying to retrieve SOC and others data on an arduino with a CAN BUS interface but I can't do it. Please anybody can send me a good CAN frame to receive CAN datas from BMS ?

Thank you very much

 

[tanoshimini]

I haven't tried to get anything off the can bus, but I've been very successful at reading data off it's UART port. Maybe give that a go, first?

 

[scoleri]

I'm finding EACH BMS has different implementations. Check github. This is what i have now on my Daly Smart 250amp.

GitHub - dreadnought/python-daly-bms: Python module for Daly BMS devices

Python module for Daly BMS devices. Contribute to dreadnought/python-daly-bms development by creating an account on GitHub.

github.com

date,voltage,amps,soc,cell1,cell2,cell3,cell4
2021-05-31T11:38:38Z,13.365,2.165,100,3.341,3.341,3.341,3.342
2021-05-31T11:38:44Z,13.365,2.09,100,3.341,3.341,3.341,3.342
2021-05-31T11:38:50Z,13.367,2.465,100,3.341,3.341,3.341,3.342
2021-05-31T11:38:56Z,13.365,2.39,100,3.341,3.341,3.341,3.344
2021-05-31T11:39:02Z,13.365,2.09,100,3.341,3.341,3.341,3.344
2021-05-31T11:39:08Z,13.368,2.09,100,3.341,3.341,3.341,3.344
2021-05-31T11:39:14Z,13.368,2.69,100,3.341,3.341,3.342,3.344
2021-05-31T11:39:20Z,13.369,2.015,100,3.341,3.342,3.341,3.345
2021-05-31T11:39:26Z,13.369,2.765,100,3.341,3.342,3.341,3.345
2021-05-31T11:39:32Z,13.368,2.84,100,3.341,3.342,3.341,3.345
2021-05-31T11:39:37Z,13.368,2.84,100,3.341,3.342,3.341,3.345
2021-05-31T11:39:43Z,13.367,2.84,100,3.341,3.342,3.342,3.344
2021-05-31T11:39:49Z,13.369,2.465,100,3.341,3.341,3.341,3.345
2021-05-31T11:39:55Z,13.369,2.54,100,3.341,3.342,3.341,3.345
2021-05-31T11:40:01Z,13.368,2.315,100,3.341,3.342,3.341,3.345
2021-05-31T11:40:07Z,13.368,2.09,100,3.341,3.342,3.341,3.345
2021-05-31T11:40:13Z,13.367,2.24,100,3.341,3.341,3.342,3.342
2021-05-31T11:40:19Z,13.368,2.09,100,3.341,3.341,3.341,3.344
2021-05-31T11:40:25Z,13.368,2.015,100,3.341,3.342,3.341,3.345
2021-05-31T11:40:31Z,13.368,2.165,100,3.341,3.342,3.341,3.344
2021-05-31T11:40:36Z,13.368,,100,3.341,3.341,3.341,3.344
2021-05-31T11:40:42Z,13.368,2.015,100,3.341,3.341,3.341,3.344
2021-05-31T11:40:48Z,13.368,2.165,100,3.341,3.341,3.341,3.344
2021-05-31T11:40:54Z,13.369,2.165,100,3.341,3.342,3.342,3.345
2021-05-31T11:41:00Z,13.369,2.54,100,3.341,3.342,3.341,3.345
2021-05-31T11:41:06Z,13.369,,100,3.341,3.342,3.341,3.345

 

[Just John]

Talking to Daly, at least their 4s BMS don't support CAN, only 485 (and the two UART interfaces for Bluetooth and USB adapter)
They really need to get their act together.
Even getting this amount of information is like pulling teeth.

 

[tanoshimini]

My understanding is that the 4-cell models are a.completely different thing, maybe from an acquisition or something. They're not the same underlying tech.

 

[humayunsiraj0]

hello there, anyone pls who have controlled or sent any instruction to daly BMS from Arduino like I want to control the MOS charge and discharge MOS so can we send a command to change these states using Arduino serial