diy solar

diy solar

Bluetooth extender for JK BMS

N

Noordsolar

New Member
Joined
Aug 2, 2020
Messages
56
Can anyone recommend a Bluetooth range extender for the JK bms ? Currently all the extenders cater for audio data and don't know if they will work with the JK BMS
 
JK bms has only Bluetooth LE (Low energy) communication. Thus, you need some extender supporting BLE standard. Audio data are delivered via standard Bluetooth. That's why it will not work.
 
Any luck? My extender does support BLE but it has a USB. I’m trying to figure out if I can plug that into the JK 24S bms
 
Im now looking into this myself, of you dont mind the price, this may work:
aircable.co

AIRcable Bluetooth 5 Range Extender

Extend the range to existing Bluetooth devices. Boosts range for speakers, headsets, sensors, instruments and iBeacons up to10 times the usual reach.
aircable.co aircable.co

If your ok with taking apart the bms, this will probably work? - presumably you may need a different type of antenna for ble?

My other idea was to use an old phone connected to the bms via bluetooth but also in range of wifi, then use a phone mirroring app to send the phones screen via wifi to my phone in the house.. Wont be able to actually alter the settings, but still view them. - UNLESS - another idea just popped into my head.. - if there is an android app that allows remote access, could access the phone near the bms via wifi to view and change settings...
 
Noordsolar said:
I have a different solution - I am using dbus serial driver ( https://github.com/Louisvdw/dbus-serialbattery ) which is running on a Victron Cerbo . With this I can monitor all the cell voltages via Internet , just cannot issue any commands.
Click to expand...
Any other equipment, such as an arduino or raspberry pi that could take the place of the victron cerbo? As the cerbo is about 3 times the price of the jk bms!
 
Noordsolar said:
you can use rasbery pi. I already have a cerbo as its part of a Victron system
Click to expand...
I know nothing about doing that though.. Would i need to do any programming, as the last time i did any was 20 years ago (turbo pascal and c++ lol).. Or is it just a matter of copying and pasting other peoples code? Thanks ?
 
Ucatchmydrift said:
Im now looking into this myself, of you dont mind the price, this may work:
aircable.co

AIRcable Bluetooth 5 Range Extender

Extend the range to existing Bluetooth devices. Boosts range for speakers, headsets, sensors, instruments and iBeacons up to10 times the usual reach.
aircable.co aircable.co

If your ok with taking apart the bms, this will probably work? - presumably you may need a different type of antenna for ble?

My other idea was to use an old phone connected to the bms via bluetooth but also in range of wifi, then use a phone mirroring app to send the phones screen via wifi to my phone in the house.. Wont be able to actually alter the settings, but still view them. - UNLESS - another idea just popped into my head.. - if there is an android app that allows remote access, could access the phone near the bms via wifi to view and change settings...
Click to expand...
I’d want to extend Bluetooth range from jk to android cell phone. Does that $129 extender do that or is a computer needed
 
Last edited:
Is there an app or something which can be installed to view the details using louis system.
 
Following ! I have a mobile solar charge controller and with my old , and very annoying, BMS I could check everything from a distance. The JK has a VERY short range.
 
I remember it quite a challenge to get it all working. I bought the M5Stack ESP32S3 device. I am doing all my development on the mac but if you install esphome using python and get this version:
Code: 
Downloads$ esphome version
Version: 2023.4.1

This is my yml config file

Code: 
# Modified by octal-ip to support MQTT and an external active balancer.
# Based on the excellent work of Sebastian Muszynski: https://github.com/syssi/esphome-jk-bms
substitutions:
  name: jk-bms
  device_description: "Monitor and control a JK-BMS via bluetooth"
  mac_address: C8:47:8C:EC:xx:xx
  protocol_version: JK02_32S

esphome:
  name: ${name}
  comment: ${device_description}
  project:
    name: "syssi.esphome-jk-bms"
    version: 1.4.0

esp32:
  board: esp32-s3-devkitc-1
  variant: esp32s3
  framework:
    type: arduino
    #version: 2.0.3
    #platform_version: 5.1.1
    #type: esp-idf
    #platform_version: 4.4.0
    #sdkconfig_options:
        #CONFIG_BT_BLE_42_FEATURES_SUPPORTED: y

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

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

ota:
logger:
  level: DEBUG
api:

mqtt:
  discovery: false
  will_message:
  birth_message:
  broker: !secret mqtt_host
  username: !secret mqtt_username
  password: !secret mqtt_password
  topic_prefix: !secret mqtt_topic
  id: jk_bms
  log_topic:
    topic: !secret mqtt_topic
    level: WARN

esp32_ble_tracker:

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

jk_bms_ble:
  - ble_client_id: client0
    protocol_version: ${protocol_version}
    throttle: 2s
    id: bms0

#binary_sensor:
#  - platform: jk_bms_ble
#    balancing:
#      name: "balancing"
      
binary_sensor:
  - platform: jk_bms_ble
    balancing:
      name: "${name} balancing"
    charging:
      name: "${name} charging"
    discharging:
      name: "${name} discharging"
    online_status:
      name: "${name} online status"
      
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"
    cell_voltage_17:
      name: "${name} cell voltage 17"
    cell_voltage_18:
      name: "${name} cell voltage 18"
    cell_voltage_19:
      name: "${name} cell voltage 19"
    cell_voltage_20:
      name: "${name} cell voltage 20"
    cell_voltage_21:
      name: "${name} cell voltage 21"
    cell_voltage_22:
      name: "${name} cell voltage 22"
    cell_voltage_23:
      name: "${name} cell voltage 23"
    cell_voltage_24:
      name: "${name} cell voltage 24"
    cell_resistance_1:
      name: "${name} cell resistance 1"
    cell_resistance_2:
      name: "${name} cell resistance 2"
    cell_resistance_3:
      name: "${name} cell resistance 3"
    cell_resistance_4:
      name: "${name} cell resistance 4"
    cell_resistance_5:
      name: "${name} cell resistance 5"
    cell_resistance_6:
      name: "${name} cell resistance 6"
    cell_resistance_7:
      name: "${name} cell resistance 7"
    cell_resistance_8:
      name: "${name} cell resistance 8"
    cell_resistance_9:
      name: "${name} cell resistance 9"
    cell_resistance_10:
      name: "${name} cell resistance 10"
    cell_resistance_11:
      name: "${name} cell resistance 11"
    cell_resistance_12:
      name: "${name} cell resistance 12"
    cell_resistance_13:
      name: "${name} cell resistance 13"
    cell_resistance_14:
      name: "${name} cell resistance 14"
    cell_resistance_15:
      name: "${name} cell resistance 15"
    cell_resistance_16:
      name: "${name} cell resistance 16"
    cell_resistance_17:
      name: "${name} cell resistance 17"
    cell_resistance_18:
      name: "${name} cell resistance 18"
    cell_resistance_19:
      name: "${name} cell resistance 19"
    cell_resistance_20:
      name: "${name} cell resistance 20"
    cell_resistance_21:
      name: "${name} cell resistance 21"
    cell_resistance_22:
      name: "${name} cell resistance 22"
    cell_resistance_23:
      name: "${name} cell resistance 23"
    cell_resistance_24:
      name: "${name} cell resistance 24"
    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"

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

#text_sensor:
#  - platform: ble_scanner
#    name: "BLE Devices Scanner"
      
switch:
  - platform: jk_bms_ble
    charging:
      name: "${name} charging"
    discharging:
      name: "${name} discharging"
    balancer:
      name: "${name} balancer"
    emergency:
      name: "${name} emergency"
    disable_temperature_sensors:
      name: "${name} disable temperature sensors"
    display_always_on:
      name: "${name} display always on"

  - platform: ble_client
    ble_client_id: client0
    name: "${name} enable bluetooth connection"
    
number:
  - platform: jk_bms_ble
    jk_bms_ble_id: bms0
    balance_trigger_voltage:
      name: "${name} balance trigger voltage"
    cell_count:
      name: "${name} cell count"
    total_battery_capacity:
      name: "${name} total battery capacity"
    cell_voltage_overvoltage_protection:
      name: "${name} cell voltage overvoltage protection"
    cell_voltage_overvoltage_recovery:
      name: "${name} cell voltage overvoltage recovery"
    cell_voltage_undervoltage_protection:
      name: "${name} cell voltage undervoltage protection"
    cell_voltage_undervoltage_recovery:
      name: "${name} cell voltage undervoltage recovery"
    balance_starting_voltage:
      name: "${name} balance starting voltage"
    voltage_calibration:
      name: "${name} voltage calibration"
    current_calibration:
      name: "${name} current calibration"
    power_off_voltage:
      name: "${name} power off voltage"
    max_balance_current:
      name: "${name} max balance current"
    max_charge_current:
      name: "${name} max charge current"
    max_discharge_current:
      name: "${name} max discharge current"

The major issue was playing around with the following config to get it to compile and run.

Code: 
esp32:
  board: esp32-s3-devkitc-1
  variant: esp32s3
  framework:
    type: arduino
    #version: 2.0.3
    #platform_version: 5.1.1
    #type: esp-idf
    #platform_version: 4.4.0
    #sdkconfig_options:
        #CONFIG_BT_BLE_42_FEATURES_SUPPORTED: y
 
I had the need, extend Bluetooth of JK BMS to be available in HomeAssisntant easy, cheap!

HA has connected USB Bluetooth with antenna using USB extender. https://www.aliexpress.com/item/100...817955!sea!HU!0!AB&curPageLogUid=nHKQA5B59bTy

I installed Batmon https://github.com/fl4p/batmon-ha on HA.

How to JK BMS
Open the JK BMs and you will see the BT. there gently clean the surface and solder ~22cm long thin cable (size does not matter ) to the end where is end of antenna, basically extend antenna to exterior. BMS case is metalic..so ..
You will notice that the BMS case has next to BT 5 small holes, so not need to drill the case, this is why you should use thin cable. For me it made the trick 3 walls.. stable BT signal, long distance.
1699720799845.png

1699721036857.png

I am building now dashboards ( I have 3 BMS 2 are Daly BMS )

1699720837248.png

you can see all details same as in JK mobile app..

1699720898920.png


You can build all kind of automation. I se it for safety smoke detector ( in HA ) is detecting smoke the I switch off BMS charge and discharge port among many other ..

Hope it helps
 

Attachments

  • JKBMS BT antenna1.jpg
    JKBMS BT antenna1.jpg
    571.3 KB · Views: 15
Windows 11 pro at least can run Android OS apps natively so I have an old laptop that is running 11 which I leave on top of the battery shelf running the JK app then remote desktop into it to monitor and adjust the settings.. It would be nice if JK had offered some kind of WiFi in the BMS or USB or an external antenna.. The example above showing the circuit trace antenna is a fair idea but it would void the warranty "Hi Hi".. The best way to create an external antenna would be to cut the traces about 1/8 of an inch from the board layer then solder a foot or two of rg174 after scraping the trace tails to make them solder pads.. The shield would go on the wider one and the center would go on the thinner one.. The other end of the piece of coax you would either put a factory made 2.4ghz antenna or bend a piece of #14 wire as it looks on the board which is a stacked J pole and hang it up away from metal objects preferably on a wall or elevated spot.. This should give you 30 feet of range if not obstructed or you could connect the rg174 to a longer length of rg6 TV wire and run that coax up to 50 feet and put the antenna right next to your Bluetooth on your android device.. To make the low energy output into a high energy output you could install a couple electronic components consisting of a transistor and others to make it a high energy like WiFi.. This would create other issues mainly the very poor security layer that Bluetooth has could open you up to unwanted outside access..
 
Zsan said:
I had the need, extend Bluetooth of JK BMS to be available in HomeAssisntant easy, cheap!

HA has connected USB Bluetooth with antenna using USB extender. https://www.aliexpress.com/item/1005004243854453.html?spm=a2g0o.productlist.main.17.4843678dqEQlTA&algo_pvid=6c94c5c2-aec6-4207-95d2-69207198b0a6&algo_exp_id=6c94c5c2-aec6-4207-95d2-69207198b0a6-8&pdp_npi=4@dis!HUF!4056.85!1398.54!!!11.11!!@2103200516997204350295051e1903!12000028504817955!sea!HU!0!AB&curPageLogUid=nHKQA5B59bTy

I installed Batmon https://github.com/fl4p/batmon-ha on HA.

How to JK BMS
Open the JK BMs and you will see the BT. there gently clean the surface and solder ~22cm long thin cable (size does not matter ) to the end where is end of antenna, basically extend antenna to exterior. BMS case is metalic..so ..
You will notice that the BMS case has next to BT 5 small holes, so not need to drill the case, this is why you should use thin cable. For me it made the trick 3 walls.. stable BT signal, long distance.
View attachment 177181

View attachment 177189

I am building now dashboards ( I have 3 BMS 2 are Daly BMS )

View attachment 177183

you can see all details same as in JK mobile app..

View attachment 177186


You can build all kind of automation. I se it for safety smoke detector ( in HA ) is detecting smoke the I switch off BMS charge and discharge port among many other ..

Hope it helps
Click to expand...
Would really like to see a video of this being done
 
You must log in or register to reply here.

Similar threads

ghostwriter66
JK-BMS PB1A16S15P vs. JK-BMS B2A24S15P
Replies
4
Views
199
Steve_S
Steve_S
C
Smart BMS JK-B2A8S20P with Active Balancer 200A (4S-8S) password since app update
Replies
10
Views
503
Robbert
Robbert
Z
JK BMS Sourcing for 10+ scale orders?
Replies
2
Views
218
hogback
H
X
JK inverter BMS and Voltronic/Phocos Inverter communication
2
Replies
27
Views
748
AshleyL
A
F
JK BMS RS485 Communicate Protocol Manual
2
Replies
26
Views
996
Steve_S
Steve_S

diy solar

diy solar
Back
Top