Shelly Plus PM Mini

This is effectively a Shelly Plus 1PM Mini, but without the relay and the switch.

GPIO Pinout

Pin	Function
GPI03	NTC
GPI06	BL0942 TX
GPI07	BL0942 RX

Serial Pinout

The UART Pinout is the same as the Shelly Plus 1PM Mini.

Basic Configuration

substitutions:
  device_name: "Shelly Plus PM Mini"

esphome:
  name: spare-mini
  friendly_name: "Shelly Plus PM Mini"

esp32:
  board: esp32-c3-devkitm-1
  framework:
    type: esp-idf
    version: recommended
    sdkconfig_options:
      COMPILER_OPTIMIZATION_SIZE: y
    advanced:
      ignore_efuse_mac_crc: false

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:
    ssid: "$(device_name) Fallback Hotspot"
    password: !secret wifi_password

logger:

api:
  encryption:
    key: !secret api_encryption_key

ota:
  password: !secret ota_password

time:
  - platform: homeassistant

captive_portal:

sensor:
  - platform: ntc
    sensor: temp_resistance_reading
    name: "Temperature"
    unit_of_measurement: "°C"
    accuracy_decimals: 1
    icon: "mdi:thermometer"
    calibration:
      b_constant: 3350
      reference_resistance: 10kOhm
      reference_temperature: 298.15K
  - platform: resistance
    id: temp_resistance_reading
    sensor: temp_analog_reading
    configuration: DOWNSTREAM
    resistor: 10kOhm
  - platform: adc
    id: temp_analog_reading
    pin: GPIO3
    attenuation: 12db

  - platform: bl0942
    uart_id: uart_bus
    voltage:
      name: "Voltage"
    current:
      name: "Current"
    power:
      name: "Power"
    frequency:
      name: "Frequency"
      accuracy_decimals: 2
    update_interval: 5s

uart:
  id: uart_bus
  tx_pin: GPIO6
  rx_pin: GPIO7
  baud_rate: 9600
  stop_bits: 1