Shelly Plug S Gen3

esp32c3 eu Comes with ESPHome plug

Overview

Generation 3 of Shelly Plug-S At this moment there is NO way to Flash it OTA. You need to open the Plug and use UART! As always, first take a dump! esptool -b 115200 --port COM11 read_flash 0x00000 0x800000 shelly_plug_s_gen3.bin

UART Pinout

Pin	Colour
Reset	Brown
3v3	Red
RX	Blue
TX	Yellow
BootSEL	Purple
GND	Black

GPIO Pinout

Pin	Function
GPIO3	Internal Temperature
GPIO4	LED WS2812
GPIO5	Relay
GPIO6	BL0942 TX
GPIO7	BL0942 RX
GPIO18	Button

substitutions:
  device_name: shelly-plug-s-gen3
  friendly_name: "Shelly Plug S Gen3"
  ip_addr: 10.0.x.x
  update_bl0942: 5s
esphome:
  name: ${device_name}
  friendly_name: ${friendly_name}
  comment: "Free Shelly!"
  platformio_options:
    board_build.flash_mode: dio
esp32:
  board: esp32-c3-devkitm-1
  flash_size: 8MB
  framework:
    type: esp-idf
    version: recommended
    sdkconfig_options:
      COMPILER_OPTIMIZATION_SIZE: y
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:
    ssid: "FreeShelly Hotspot"
    password: !secret wifi_password
logger:
api:
  encryption:
    key: !secret api_encryption_key
ota:
  - platform: esphome
    password: !secret ota_password
captive_portal:
binary_sensor:
  - platform: gpio
    id: "push_button"
    name: "Button"
    internal: true
    pin:
      number: GPIO18
      inverted: yes
      mode:
        input: true
        pullup: true
    filters:
      - delayed_on_off: 5ms
switch:
  - platform: gpio
    pin: GPIO4
    name: "Relay"
light:
  - platform: esp32_rmt_led_strip
    rgb_order: GRB
    rmt_channel: 0
    chipset:
    pin: GPIO4
    num_leds: 4
    id: rgb_light1
    internal: false
    default_transition_length: 700ms
    restore_mode: ALWAYS_OFF
uart:
  id: uart_0
  tx_pin: GPIO7
  rx_pin: GPIO6
  baud_rate: 9600
  stop_bits: 1
  data_bits: 8
  parity: NONE
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_0
    address: 0
    voltage:
      name: 'Voltage'
      id: bvoltage
      icon: mdi:alpha-v-circle-outline
      device_class: voltage
    current:
      name: 'Current'
      id: bcurrent
      icon: mdi:alpha-a-circle-outline
      device_class: current
    power:
      name: 'Power'
      id: bpower
      icon: mdi:transmission-tower
      device_class: power
    energy:
      name: 'Energy'
      id: benergy
      icon: mdi:lightning-bolt
      device_class: energy
    frequency:
      name: "Frequency"
      id: bfreq
      accuracy_decimals: 2
      icon: mdi:cosine-wave
      device_class: frequency
    update_interval: ${update_bl0942}

Open the device

This little seal need to drill open, best you use a prick punch with an M3.5-M4 Drill. Drill When the seal is cracked open, you need a M2 drill, and drill in center, just a little. Drill Now take a tapered punch and press the seal out. The whole grounding receptacle will come out. We need some hot-air (~300°C) and 5 of the iFixit triangle-plastic, there are 3 spots with glue. Heat them up, and try placeing the plastic around. Open it up You will get a little gap, take anohter plastic and g et betweet the withe and transparent plastic, and make a circle.

After 2 rounds you can easly take it out.