esphome how write config for module esp01 with integrated 4 relay

Question

I got 4 relay module with esp01 from aliexpress but it switch relays not through pins.

How I can control this relay module with esphome?

Answer 1

# Enable logging
logger:
  baud_rate: 0 #need this to free up UART pins
uart:
  baud_rate: 9600 # speed to STC15L101EW
  tx_pin: 1
  rx_pin: 3

globals:
   - id: on_flag_1
     type: int
     restore_value: no
     initial_value: '0'
   - id: on_flag_2
     type: int
     restore_value: no
     initial_value: '0'
   - id: on_flag_3
     type: int
     restore_value: no
     initial_value: '0'
   - id: on_flag_4
     type: int
     restore_value: no
     initial_value: '0'

switch:
  - platform: template 
    id: relay1
    name: "Relay #1"
    lambda: 
      return id(on_flag_1);
    turn_on_action:
      - uart.write: [0xA0, 0x01, 0x01, 0xA2]
      - globals.set:
          id: on_flag_1
          value: '1'
    turn_off_action:
      - uart.write: [0xA0, 0x01, 0x00, 0xA1]
      - globals.set:
          id: on_flag_1
          value: '0'
  - platform: template 
    id: relay2
    name: "Relay #2"
    lambda: 
      return id(on_flag_2);
    turn_on_action:
      - uart.write: [0xA0, 0x02, 0x01, 0xA3]
      - globals.set:
          id: on_flag_2
          value: '1'
    turn_off_action:
      - uart.write: [0xA0, 0x02, 0x00, 0xA2]
      - globals.set:
          id: on_flag_2
          value: '0'
  - platform: template 
    id: relay3
    name: "Relay #3"
    lambda: 
      return id(on_flag_3);
    turn_on_action:
      - uart.write: [0xA0, 0x03, 0x01, 0xA4]
      - globals.set:
          id: on_flag_3
          value: '1'
    turn_off_action:
      - uart.write: [0xA0, 0x03, 0x00, 0xA3]
      - globals.set:
          id: on_flag_3
          value: '0'
  - platform: template 
    id: relay4
    name: "Relay #4"
    lambda: 
      return id(on_flag_4);
    turn_on_action:
      - uart.write: [0xA0, 0x04, 0x01, 0xA5]
      - globals.set:
          id: on_flag_4
          value: '1'
    turn_off_action:
      - uart.write: [0xA0, 0x04, 0x00, 0xA4]
      - globals.set:
          id: on_flag_4
          value: '0'

I have a single but extended it based on what worked on my single this will produce 4 switches that can be toggled on/off.