(Charge, Discharge, Balancing) Controls not showing up as switches in Homeassistant

[PMPoulsen]

Hi,

I have integrated theBMS UART with an ESP32 Devboard through ESPHome in Homeassistant: I have connection to the BMS and getting data, I am however not able to control the Charge, Discharge, Balancing switches.

In the YAML code the entities are declared as binary_sensors:
binary_sensor:

  - platform: jk_bms
    balancing:
      name: "${name} balancing"
    balancing_switch:
      name: "${name} balancing switch"
    charging:
      name: "${name} charging"
    charging_switch:
      name: "${name} charging switch"
    discharging:
      name: "${name} discharging"
    discharging_switch:
      name: "${name} discharging switch"
    dedicated_charger_switch:
      name: "${name} dedicated charger switch"

The above is a copy from the example code in this git repository, and the result is E.g:

and not a control (switch) that I can toggle (on/off)

Then I tried to declare the switches like this, but then the ESPHome will not compile:

#switch:
#  - platform: jk_bms
#    balancing_switch:
#      name: "${name} balancing switch"
#    charging_switch:
#      name: "${name} charging switch"
#    discharging_switch:
#      name: "${name} discharging switch"

What am I doing wrong or missing?
Any guidance would be helpfull, thanks in advance

[syssi]

The UART-TTL protocol is read-only if we trust the manufacturer's statement. You have to use BLE to control the Mosfets.

[syssi]

Please be careful if you power the ESPs using a DC-DC converter directly from the BMS. I'm aware of some people which killed their BMS this way.

[PMPoulsen]

Thanks for the heads-up I might move the DC-DC to feed directly from the batteri instead.

[syssi]

Please study these discussion to not mess up your setup:

#178
#175 (reply in thread)

[dr3amr]

@syssi perhaps you should mention in the README.md also that the UART is actually read-only, I did not know this (until this discussion) and was initially planning to go the UART route. Due to some challenges, I implemented this project using BLE.

[syssi]

I've added an reminder here: #266