esp32-example.yaml

substitutions:
  name: seplos-bms
  device_description: "Monitor a Seplos BMS via RS485"
  external_components_source: github://syssi/esphome-seplos-bms@main
  tx_pin: GPIO4
  rx_pin: GPIO5

esphome:
  name: ${name}
  comment: ${device_description}
  min_version: 2024.6.0
  project:
    name: "syssi.esphome-seplos-bms"
    version: 1.2.0

esp32:
  board: wemos_d1_mini32

external_components:
  - source: ${external_components_source}
    refresh: 0s

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

ota:
  platform: esphome

logger:
  level: DEBUG

# If you use Home Assistant please remove this `mqtt` section and uncomment the `api` component!
# The native API has many advantages over MQTT: https://esphome.io/components/api.html#advantages-over-mqtt
mqtt:
  broker: !secret mqtt_host
  username: !secret mqtt_username
  password: !secret mqtt_password
  id: mqtt_client

# api:

uart:
  id: uart_0
  # Please set the default baudrate of your Seplos BMS model here. It's sometimes 19200 baud instead of 9600.
  baud_rate: 9600
  tx_pin: ${tx_pin}
  rx_pin: ${rx_pin}
  # The increased RX buffer size is important because
  # the full BMS response must fit into the buffer
  rx_buffer_size: 384

seplos_modbus:
  id: modbus0
  uart_id: uart_0
  rx_timeout: 150ms

seplos_bms:
  id: bms0
  # Dip switch configuration of a single pack setup / address 0x0
  #  8    7    6    5    4    3    2    1
  # off, off, off, off, off, off, off, off
  address: 0x00
  # Known protocol versions: 0x20 (Seplos), 0x26 (Boqiang)
  protocol_version: 0x20
  seplos_modbus_id: modbus0
  update_interval: 10s

sensor:
  - platform: seplos_bms
    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"
    temperature_1:
      name: "${name} temperature 1"
    temperature_2:
      name: "${name} temperature 2"
    temperature_3:
      name: "${name} temperature 3"
    temperature_4:
      name: "${name} temperature 4"
    temperature_5:
      name: "${name} environment temperature"
    temperature_6:
      name: "${name} mosfet temperature"
    total_voltage:
      name: "${name} total voltage"
    current:
      name: "${name} current"
    power:
      name: "${name} power"
    charging_power:
      name: "${name} charging power"
    discharging_power:
      name: "${name} discharging power"
    residual_capacity:
      name: "${name} residual capacity"
    battery_capacity:
      name: "${name} battery capacity"
    rated_capacity:
      name: "${name} rated capacity"
    state_of_charge:
      name: "${name} state of charge"
    charging_cycles:
      name: "${name} charging cycles"
    state_of_health:
      name: "${name} state of health"
    port_voltage:
      name: "${name} port voltage"