JK-BMSB2A24S20P Sw:10.08 & Esp32BLE connection

[ans-gw]

Hello,need little help plz:
Just got JK-BMSB2A24S20P
Hw. version:10.XG
Sw. Version:10.08,
Manufacturer date 2033-05-20
Version. 4.6.7

is this Bms version actually testet/working? which protocol ? Defaults to "JK02" or use "JK04".
I m trying Esp32BLE connection with few sensors,but no connect,no data from Bms.I m confused!
Must I set My BMS mac address in yaml?...and eventually bluethoot BMS password?

This my yaml:

substitutions:
  name: jk-bms
  external_components_source: github://syssi/esphome-jk-bms@main
  mac_address: ao:xx:3b:6e:xx:DS  
   --- Defaults to "JK02". Please use "JK04" if you have some old JK-BMS version (f.e. JK-B2A16S                hw 3.0, sw. 3.3.0)
  protocol_version: JK02
  
esphome:
  name: ${name}

esp32:
  board: nodemcu-32s
  framework:
    type: arduino
    
external_components:
  - source: ${external_components_source}
    refresh: 0s  
    
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password    
  manual_ip:
    # Set this to the IP of the ESP
    static_ip: 192.168.xxx.xxx
    # Set this to the IP address of the router. Often ends with .1
    gateway: 192.168.xxx.xxx
    # The subnet of the network. 255.255.255.0 works for most home networks.
    subnet: 255.255.255.0
  
ota:
   password: "xxxxxxxxxxcccccccccccccccc"
logger:
api:

esp32_ble_tracker:

ble_client:
  - mac_address: ${mac_address}
    id: client0

jk_bms_ble:
  - ble_client_id: client0
    protocol_version: ${protocol_version}
    throttle: 5s
    id: bms0

binary_sensor:
  - platform: jk_bms_ble
    balancing:
      name: "${name} balancing"
    charging:
      name: "${name} charging"
    discharging:
      name: "${name} discharging"

button:
  - platform: jk_bms_ble
    retrieve_settings:
      name: "${name} retrieve settings"
    retrieve_device_info:
      name: "${name} retrieve device info"

sensor:
  - platform: jk_bms_ble
    jk_bms_ble_id: bms0
    min_cell_voltage:
      name: "${name} min cell voltage"
    max_cell_voltage:
      name: "${name} max cell voltage"
    min_voltage_cell:
      name: "${name} min voltage cell"
    max_voltage_cell:
      name: "${name} max voltage cell"
    delta_cell_voltage:

Thank you

[syssi]

The BLE version of this component is well tested but some documentation / instructions how to use this component are missing.

Please try to care about these things:

1. You have to pass the mac_address of your BMS to the ble_client by updating the substitution.
2. The BMS supports just one connection at a time. Please close the android app on some phones closing the app isn't enough and needs to be stopped. If the red LED of the BMS blinks no BLE connection is active and a new connection can be established.
3. If you use the ble_switch (not present at your config) you have to turn on this switch to enable the BLE client.
4. There is no password required. I assume it's a fake security measure because the current(?) (or factory) is part of the device info response and probably compared/checked on client side (android app).
5. Your BMS (hardware version >=4.0) should use the protocol default (JK02).

The BMS acknowledges every command by a piezo beep. After a successful connection the BMS should beep two times. If you use one of the button entities the BMS should beep again to acknowledge the commad. If you have trouble / if the component doesn't connect please increase the log level and provide some logs:

logger:
  level: VERY_VERBOSE
  logs:
    scheduler: DEBUG
    component: DEBUG
    esp32_ble_tracker: DEBUG
    sensor: DEBUG

Make sure to anonymize WiFi/BLE names and mac addresses slightly.

[ans-gw]

I get it working...compiling it from windows with windows esphome.,because of this:
"Well that’s a known ‘external’ issue, the required platformio package is not available for the arm 64 bits platform"

i got the data,with windows esphome and also from HA esphome log...but no data in Jk.Bms device!?...may be have to reinstall the device
and re register as a new divice in Ha.....work in progress.

I attach log file...i see something not read-unknown..
Please let me know .Thanks for help.
logs_jk-bmsOkconnect.txt

[syssi]

This is fine. Did you add the esphome node to your HA setup? Please go to the ESPHome integration and add the device. If it's already added remove the device and add it again.

The log looks good. The unknown values at fine because there are some parts of the payload/protocol with unknown meaning.

[ans-gw]

Hi...compiling with Switch give error,take out switch all ok.

Building in release mode
Linking .pioenvs\jk-bms\firmware.elf
c:/users/angel/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pioenvs/jk-bms/src/main.o:(.literal._ZN7esphome10jk_bms_ble8JkSwitchC5Ev[_ZN7esphome10jk_bms_ble8JkSwitchC5Ev]+0x0): undefined reference to vtable for esphome::jk_bms_ble::JkSwitch' c:/users/angel/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pioenvs/jk-bms/src/main.o:(.literal._ZN7esphome10jk_bms_ble8JkSwitchC5Ev[_ZN7esphome10jk_bms_ble8JkSwitchC5Ev]+0x4): undefined reference to vtable for esphome::jk_bms_ble::JkSwitch'
c:/users/angel/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pioenvs/jk-bms/src/main.o:(.literal._Z5setupv+0x288): undefined reference to vtable for esphome::ble_client::BLEClientSwitch' c:/users/angel/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pioenvs/jk-bms/src/main.o:(.literal._Z5setupv+0x28c): undefined reference to vtable for esphome::ble_client::BLEClientSwitch'
c:/users/angel/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: .pioenvs/jk-bms/src/main.o:(.literal._Z5setupv+0x290): undefined reference to `vtable for esphome::ble_client::BLEClientSwitch'
collect2.exe: error: ld returned 1 exit status
*** [.pioenvs\jk-bms\firmware.elf] Error 1

???????

[syssi]

esphome clean yourconfig.yaml
esphome run yourconfig.yaml

should solve the issue.

[ans-gw]

Ok..now is perfect..all working good.
Thank you very much.
I post my WORKING jk-bms yaml file for Esp32:

substitutions:
name: jk-bms

esphome:
name: jk-bms

esp32:
board: nodemcu-32s
framework:
type: esp-idf
version: latest

external_components:

• source: github://syssi/esphome-jk-bms@main
  refresh: 0s

wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
manual_ip:
static_ip: 192.168.
gateway: 192.168.
subnet: 255.255.255.0

ota:
password: !secret ota_password

logger:
api:
password: !secret api_password
esp32_ble_tracker:

ble_client:

• mac_address: !secret jkbms_mac_address
  id: client0

jk_bms_ble:

• ble_client_id: client0
  protocol_version: JK02
  throttle: 5s
  id: bms0

binary_sensor:

• platform: jk_bms_ble
  balancing:
  name: "${name} balancing"
  charging:
  name: "${name} charging"
  discharging:
  name: "${name} discharging"

button:

• platform: jk_bms_ble
  retrieve_settings:
  name: "${name} retrieve settings"
  retrieve_device_info:
  name: "${name} retrieve device info"

sensor:

• platform: jk_bms_ble
  jk_bms_ble_id: bms0
  min_cell_voltage:
  name: "${name} min cell voltage"
  max_cell_voltage:
  name: "${name} max cell voltage"
  min_voltage_cell:
  name: "${name} min voltage cell"
  max_voltage_cell:
  name: "${name} max voltage cell"
  delta_cell_voltage:
  name: "${name} delta cell voltage"
  average_cell_voltage:
  name: "${name} average cell voltage"
  cell_voltage_1:
  name: "${name} cell voltage 1"
  cell_voltage_2:
  name: "${name} cell voltage 2"
  cell_voltage_3:
  name: "${name} cell voltage 3"
  cell_voltage_4:
  name: "${name} cell voltage 4"
  cell_voltage_5:
  name: "${name} cell voltage 5"
  cell_voltage_6:
  name: "${name} cell voltage 6"
  cell_voltage_7:
  name: "${name} cell voltage 7"
  cell_voltage_8:
  name: "${name} cell voltage 8"
  cell_voltage_9:
  name: "${name} cell voltage 9"
  cell_voltage_10:
  name: "${name} cell voltage 10"
  cell_voltage_11:
  name: "${name} cell voltage 11"
  cell_voltage_12:
  name: "${name} cell voltage 12"
  cell_voltage_13:
  name: "${name} cell voltage 13"
  cell_voltage_14:
  name: "${name} cell voltage 14"
  cell_voltage_15:
  name: "${name} cell voltage 15"
  cell_voltage_16:
  name: "${name} cell voltage 16"

  total_voltage:
  name: "${name} total voltage"
  current:
  name: "${name} current"
  power:
  name: "${name} power"
  charging_power:
  name: "${name} charging power"
  discharging_power:
  name: "${name} discharging power"
  temperature_sensor_1:
  name: "${name} temperature sensor 1"
  temperature_sensor_2:
  name: "${name} temperature sensor 2"
  power_tube_temperature:
  name: "${name} power tube temperature"
  state_of_charge:
  name: "${name} state of charge"
  capacity_remaining:
  name: "${name} capacity remaining"
  total_battery_capacity_setting:
  name: "${name} total battery capacity setting"
  charging_cycles:
  name: "${name} charging cycles"
  total_charging_cycle_capacity:
  name: "${name} total charging cycle capacity"
  total_runtime:
  name: "${name} total runtime"
  balancing_current:
  name: "${name} balancing current"
  errors_bitmask:
  name: "${name} errors bitmask"

switch:

• platform: jk_bms_ble
  charging:
  name: "${name} charging"
  discharging:
  name: "${name} discharging"
  balancer:
  name: "${name} balancer"

• platform: ble_client
  ble_client_id: client0
  name: "${name} enable bluetooth connection"

text_sensor:

• platform: jk_bms_ble
  errors:
  name: "${name} errors"
  total_runtime_formatted:
  name: "${name} total runtime formatted"

[ans-gw]

All is working fine,but randomly every 2-3 days Esp32 loose connection!
I dont know where is the problem(my Esp32?),so i would like to try the serial connection.
JK-BMSB2A24S20P have many ports,i m not sure which one have to use,and I m scarry to brick Bms too.
(i read must disconnect the serial cable when upload new fw to Esp32..because the reset on bootup can cause problem to Bms.)
I kindly need help with connection,I attach a pic:
.

For what i understand I can connect Esp32 Tx pin to Bms Rx pin and Esp32 Rx pin to Bms Tx pin directly...and set in Yaml:

external_components:
  - source: github://github://syssi/esphome-jk-bms@main
    refresh: 0s

uart:
  id: uart0
  baud_rate: 115200
  rx_buffer_size: 384
  tx_pin: GPIO1
  rx_pin: GPIO3

jk_modbus:
  id: modbus0
  uart_id: uart0

jk_bms:
  id: bms0
  jk_modbus_id: modbus0

I no understand?!..must use jk_modbus too?

Thank you for help.

[ans-gw]

I try with serial but no working(need time to better check).
I try to recompile your new ble version....but i get this error:
D:\Esphome\myfile.esphome\build\jk-bms/src/esphome/core/controller.cpp:59: undefined reference to `esphome::number::Number::add_on_state_callback(std::function<void (float)>&&)'
collect2.exe: error: ld returned 1 exit status
*** [.pioenvs\jk-bms\firmware.elf] Error 1

can you please take a look?
thank you

P.S.:I also notice that Esp32 about every 2-3 days stops,loose the connection..
Can add a command to reboot esp32 every 24 hours?

[syssi]

Please try a clean build: esphome clean config.yaml; esphome run config.yaml. Is the ESP32 still available after 2-3 days but Bluetooth doesn't work anymore? Please try to add the restart component and restart manually. Does this solve the issue temporary?

[ans-gw]

Ok....I clean the build and all is OK.
I add to esp32 yaml this line,to reboot esp32:i will made an automation to reboot every 24 hours.
switch:

• platform: restart
  name: "Jk-Esp32-Switch"
  Can reboot Esp32

Thanks for help.
At the end i decide i will use jk-bms Ble version on Esp32 with throttle: 10s,
because can change setting.

1 question about esphome-pipsolar:if I use Mqtt version,will I be able to use commands to set inverter paramenters? Es:PCPxx,Change charging A,Battery discarge voltage ecc ecc?

[syssi]

Just add the component. It's a software restart (no pins etc. required): https://esphome.io/components/button/restart.html

Please let's talk about pipsolar details at the corresponding project.

[ans-gw]

oK...i already upload new yaml included with:
-switch:
- platform: restart
name: "Jk-Esp32-Switch"

for all who need.

Thanks for your great job

[ans-gw]

I post here my WORKING Jk_Bms Ble connection with ESP-32 for all who need:
Must compile with: framework: type: esp-idf version: latest.

UPDATE 25/01/2023.
With Esphome update 12.6 on Homeassistant, esp-idf is now compatible, so can be compiled derectly from Homeassistant.

substitutions:
  name: jk-bms
  
esphome:
  name: jk-bms  
  project:
    name: "syssi.esphome-jk-bms"
    version: 1.3.0

esp32:
  board: nodemcu-32s  
  framework:
    type: esp-idf
    version: latest

external_components:
  - source: github://syssi/esphome-jk-bms@main
    refresh: 0s

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  manual_ip:    
    static_ip: 192.168.xxx.xxx 
    gateway: 192.168.xxx.xxx
    subnet: 255.255.xxx.xxx
ota:
  password: !secret ota_password

logger:
api:
  password: !secret api_password

esp32_ble_tracker:

ble_client:
  - mac_address: !secret jkbms_mac_address
    id: client0

jk_bms_ble:
  - ble_client_id: client0
    protocol_version: JK02
    throttle: 5s
    id: bms0

binary_sensor:
  - platform: jk_bms_ble
    balancing:
      name: "${name} balancing"
    charging:
      name: "${name} charging"
    discharging:
      name: "${name} discharging"

button:
  - platform: jk_bms_ble
    retrieve_settings:
      name: "${name} retrieve settings"
    retrieve_device_info:
      name: "${name} retrieve device info"
number:
  - platform: jk_bms_ble
    jk_bms_ble_id: bms0
    balance_trigger_voltage:
      name: "${name} balance trigger voltage"
    cell_voltage_overvoltage_protection:
      name: "${name} cell voltage overvoltage protection"
    cell_voltage_overvoltage_recovery:
      name: "${name} cell voltage overvoltage recovery"
    balance_starting_voltage:
      name: "${name} balance starting voltage"
    max_balance_current:
      name: "${name} max balance current"
    max_charge_current:
      name: "${name} max charge current"
    max_discharge_current:
      name: "${name} max discharge current"



sensor:
  - platform: jk_bms_ble
    jk_bms_ble_id: bms0
    min_cell_voltage:
      name: "${name} min cell voltage"
    max_cell_voltage:
      name: "${name} max cell voltage"
    min_voltage_cell:
      name: "${name} min voltage cell"
    max_voltage_cell:
      name: "${name} max voltage cell"
    delta_cell_voltage:
      name: "${name} delta cell voltage"
    average_cell_voltage:
      name: "${name} average cell voltage"
    cell_voltage_1:
      name: "${name} cell voltage 1"
    cell_voltage_2:
      name: "${name} cell voltage 2"
    cell_voltage_3:
      name: "${name} cell voltage 3"
    cell_voltage_4:
      name: "${name} cell voltage 4"
    cell_voltage_5:
      name: "${name} cell voltage 5"
    cell_voltage_6:
      name: "${name} cell voltage 6"
    cell_voltage_7:
      name: "${name} cell voltage 7"
    cell_voltage_8:
      name: "${name} cell voltage 8"
    cell_voltage_9:
      name: "${name} cell voltage 9"
    cell_voltage_10:
      name: "${name} cell voltage 10"
    cell_voltage_11:
      name: "${name} cell voltage 11"
    cell_voltage_12:
      name: "${name} cell voltage 12"
    cell_voltage_13:
      name: "${name} cell voltage 13"
    cell_voltage_14:
      name: "${name} cell voltage 14"
    cell_voltage_15:
      name: "${name} cell voltage 15"
    cell_voltage_16:
      name: "${name} cell voltage 16"
      
    total_voltage:
      name: "${name} total voltage"
    current:
      name: "${name} current"
    power:
      name: "${name} power"
    charging_power:
      name: "${name} charging power"
    discharging_power:
      name: "${name} discharging power"
    temperature_sensor_1:
      name: "${name} temperature sensor 1"
    temperature_sensor_2:
      name: "${name} temperature sensor 2"
    power_tube_temperature:
      name: "${name} power tube temperature"
    state_of_charge:
      name: "${name} state of charge"
    capacity_remaining:
      name: "${name} capacity remaining"
    total_battery_capacity_setting:
      name: "${name} total battery capacity setting"
    charging_cycles:
      name: "${name} charging cycles"
    total_charging_cycle_capacity:
      name: "${name} total charging cycle capacity"
    total_runtime:
      name: "${name} total runtime"
    balancing_current:
      name: "${name} balancing current"
    errors_bitmask:
      name: "${name} errors bitmask"    
           

switch:
  - platform: jk_bms_ble
    charging:
      name: "${name} charging"
    discharging:
      name: "${name} discharging"
    balancer:
      name: "${name} balancer"

  - platform: ble_client
    ble_client_id: client0
    name: "${name} enable bluetooth connection"
  - platform: restart
    name: "Jk-Esp32-Switch"


text_sensor:
  - platform: jk_bms_ble
    errors:
      name: "${name} errors"
    total_runtime_formatted:
      name: "${name} total runtime formatted"

[ans-gw]

UPDATE 25/01/2023.
With Esphome update 12.6 on Homeassistant, esp-idf is now compatible, so can be compiled derectly from Homeassistant