Any questions ?

[Sleeper85]

@solarfocus

Hi,

If you have any questions, you can ask them here.

[cinusik]

Do you implement multiple shunt solution over RS485 in 1.4.4? Just asking. Not need that functionality right now but it will be nice to have it for the future ideas ;)
FYI: BMS Calibration was the solution for BMS SOC differences. Just to let you know that 10 Amps calibration was not enoug - I went for calibration at 30Amps and now both BMSes are spot on with SOC.

[Sleeper85]

Yes multi-shunt will be part of 1.4.4, it already works for me.

[solarfocus]

Great ,well I bought me that can bus isolation from m5 ,have some esp 32 on hand and like to set up a close loop connection with a JK BMS to my 6kw deye EU inverter and a diy 48v Battery (Eve mb31),
The issue I see is that I installed the whole system /solar but when it comes to computer/esp /etc.-
I am lost,for that I need help,

[Sleeper85]

@solarfocus

To help you you have to be more specific.

• Inverter: Deye = OK
• A 16S EVE MB31 battery = OK
• JK-BMS ? How many ? Which JK-B or JK-PB model ?
• M5stack CAN bus board, which one? SKU number ?
• ESP32 board, which model ?

[solarfocus]

1 BMS 150 A Cais3050G Esp 32 dev kit v1

…

________________________________ From: Sleeper85 ***@***.***> Sent: Thursday, August 29, 2024 3:29 PM To: Sleeper85/esphome-jk-bms-can ***@***.***> Cc: solarfocus ***@***.***>; Mention ***@***.***> Subject: Re: [Sleeper85/esphome-jk-bms-can] Any questions ? (Discussion #71) @solarfocus<https://github.com/solarfocus> To help you you have to be more specific. * Inverter: Deye = OK * A 16S EVE MB31 battery = OK * JK-BMS ? How many ? Which JK-B or JK-PB model ? * M5stack CAN bus board, which one? SKU number ? * ESP32 board, which model ? — Reply to this email directly, view it on GitHub<#71 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANQOG5DQILLBGPWWZS2ZBYTZT444FAVCNFSM6AAAAABNIXVVU2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANBYHA4TAOI>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[Sleeper85]

Cais3050G

You talk about this CAN unit ?

You have a BMS but I still don't know which model ?
The old JK-B model or the new JK-PB ?

[solarfocus]

I was trying to send you a photo, Yes it is the old one BMS , Yes this can unit , So the question is: Do I need to download all the esp home files ? I read something like yml , If possible a clear guide what I need to download would help , Also what cables I need to connect? Appreciate your time and effort to help, Andy

…

________________________________ From: Sleeper85 ***@***.***> Sent: Friday, August 30, 2024 7:01 PM To: Sleeper85/esphome-jk-bms-can ***@***.***> Cc: solarfocus ***@***.***>; Mention ***@***.***> Subject: Re: [Sleeper85/esphome-jk-bms-can] Any questions ? (Discussion #71) Cais3050G You talk about this CAN unit ?<https://docs.m5stack.com/en/unit/can> You have a BMS but I still don't know which model ? The old JK-B model or the new JK-PB ? — Reply to this email directly, view it on GitHub<#71 (reply in thread)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANQOG5H625CF5AZYME4K723ZUC6SPAVCNFSM6AAAAABNIXVVU2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANJQGI4TCNQ>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[Sleeper85]

YamBMS 1.4.4

1. Download all files.

2. To compile you need what I have highlighted in pink

3. The default GPIOs you should use

uart:
  # UART 1
  - id: uart_esp_1
    tx_pin: 17 # to BMS RX
    rx_pin: 16 # to BMS TX
    baud_rate: 115200

canbus:
  # CANBUS NODE 1
  - platform: esp32_can
    id: canbus_node1
    tx_pin: 23 # to CAN board CTX
    rx_pin: 22 # to CAN board CRX (with 4.7K resistor except for SN65HVD230)
    can_id: 1
    bit_rate: 500kbps

See the documentation.
See the schematic.