Sonoff Mini R4

SONOFF MiniR4 Extreme series. 10A single relay. 100-240VAC 50 / 60 hz. With dual core ESP32. Flashing is done via the exposed pin headers on the board (see pics below) KEY is GPIO 0 and 3.3vdc is found on the U2 pad on the bottom.

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Video Setup

TASMOTA Template

{"NAME":"Sonoff MiniR4 ESP32","GPIO":[32,1,1,1,1,1,1,1,0,1,1,1,1,1,1,576,0,1,1,1,0,1,224,160,0,0,0,0,1,1,1,1,1,0,0,1],"FLAG":0,"BASE":1}

TASMOTA Settings

Setting	Description
switchmode1 1	Set if using a non-monetary push button/switch

GPIO Layout

GPIO	Component	Description
GPIO00	Button1	Button
GPIO19	LedLink_i	Inverted LED
GPIO26	Relay1	Relay for Load
GPIO27	Switch1	S1/S2 input

ESPHome YAML

substitutions:
  display_name: minir4
  
esphome:
  name: minir4

esp32:
  board: esp32dev
  framework:
    type: arduino
    
wifi:
  ssid: !secret wifi_myssid
  password: !secret wifi_mypass
  ap: 
    ssid: ${display_name}_AP
    password: !secret wifi_mypass
    ap_timeout: 3min
    
captive_portal:

esp32_ble_tracker:
  scan_parameters:
    interval: 300ms
    window: 100ms
    active: true

bluetooth_proxy:
  active: true

logger:

ota:

api:
  
switch:
  - platform: gpio
    name: ${display_name} Relay
    pin:
      number: GPIO26
      inverted: false
    id: relay
    on_turn_on:
      - light.turn_on: relay_led
    on_turn_off:
      - light.turn_off: relay_led
  - platform: restart
    name: ${display_name} Restart

output:
  - platform: gpio
    pin: GPIO19
    inverted: True
    id: relay1_led_gpio

light:
  - platform: binary
    name: "Relay LED"
    id: relay_led
    internal: true    
    output: relay1_led_gpio

binary_sensor:
  - platform: gpio
    internal: true
    pin:
      number: GPIO27
      mode: INPUT_PULLUP
      inverted: false
    name: ${display_name} Switch
    on_state:
      - switch.toggle: relay
  - platform: gpio
    internal: true
    pin:
      number: GPIO0
      mode: INPUT_PULLUP
      inverted: false
    name: ${display_name} Button
    on_press:
      - switch.toggle: relay

Pics