Martin Jerry RP-S01 (Single Relay)

Single Relay single width Decora US switch with Power Monitoring.

This switch has a White and Red nightlight in a rocker paddle design. There is a small LEDs behind the top rocker to indicate if Relay 1 is on. The internal relay is rated at only 10 amps, keep this in mind when combining it with a 15 or 20 amp circuit breaker. The white night light brightness is controlled via the dimmer wheel on the top, the red night light is controllable via software. Both Up & Down rocker buttons are tied into the same input on the ESP32.

The switch comes preflashed with TASMOTA and Matter enabled on a 4MB ESP32-C3 module. If ESPHome is desired, the switch can easily be converted with a TTL USB adapter and dupont jumpers. NO Soldering is necessary! See Pics Section Below.

YES, you can use this switch as an ESPHome Bluetooth Proxy.

Purchase - Pre-Flashed with TASMOTA Amazon

Detailed video integration into Home Assistant and Teardown

Tasmota Template

{"NAME":"RP-S01 Switch","GPIO":[0,0,2624,2656,2720,320,576,0,448,0,0,0,0,0,0,0,0,0,224,32,0,0],"FLAG":0,"BASE":1}

GPIO Layout

GPIO	Component	Description
GPIO02	HLWBL SEL_i	Power Monitoring
GPIO03	HLWBL CF1	Power Monitoring
GPIO04	BL0937 CF	Power Monitoring
GPIO05	LED_i	LED 1
GPIO08	PWM_i	Red Night Light
GPIO18	Relay1	Load 1 Wire
GPIO19	Button1	Up/Down Buttons

TASMOTA Settings

Setting	Description
setoption13 1	Set Buttons to respond instantly and disable multipress (optional)
setoption30 1	Sets domain to a light (optional)

TASMOTA Rules

None necessary.

Converting to ESPHome

No soldering is necessary to convert the device to ESPHome!

Due to the different flash partitions of ESPHome and TASMOTA, a serial reflash is the best solution to upgrade the switch. The switch has in an internal pin header with the dupont jumper holes broken out for you. They did this for us! You need a USB TTL adapter adapter such as the "little red guy" and a set of female to male dupont jumper wires.

Use the YAML below to add the device to the ESPHome compiler dashboard and build the device.
Download the factory full image bin file.
Connect the dupont wires as shown in the Pics Section below and attach the USB TTL to the computer. GPIO 9 needs to be grounded for at least the first few seconds of power up.
Use the ESPHome installer to install your bin file created above.

alt text

ESPHome YAML

substitutions:
  # Higher value gives lower watt readout
  current_res: "0.00106"
  # Lower value gives lower voltage readout
  voltage_div: "1570"  
  current_mul: "0.914285714285714" # Muliplier for current sensor filter. Calibrate for higher accuracy. 

esphome:
  name: sw-mj-1chan
  friendly_name: sw-mj-1chan
  platformio_options:
    board_build.mcu: esp32c3
    board_build.variant: esp32c3  
# added the line below to prevent bootloops when flashing modern bin via serial
    board_build.flash_mode: dio     

esp32:
  board: esp32-c3-devkitm-1
  framework:
    type: esp-idf
    sdkconfig_options:
      CONFIG_BT_BLE_50_FEATURES_SUPPORTED: y
      CONFIG_BT_BLE_42_FEATURES_SUPPORTED: y
      CONFIG_ESP_TASK_WDT_TIMEOUT_S: "10"    

logger:
api:
captive_portal:
ota:
  - platform: esphome

## Uncomment the section below to enable Bluetooh Proxy Support

#esp32_ble_tracker:
#  scan_parameters:
#    active: true
#bluetooth_proxy:
#  active: true   

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

sensor:
  - platform: hlw8012
    model: BL0937
    sel_pin:
      number: GPIO02
      inverted: true
    cf_pin: GPIO04
    cf1_pin: GPIO03
    change_mode_every: 4
    update_interval: 10s
    current:
      name: Amps
      unit_of_measurement: A
      accuracy_decimals: 2
      filters:
        - multiply: ${current_mul}      
    voltage:
      name: Volts
      unit_of_measurement: V
      accuracy_decimals: 1
    power:
      name: Watts
      unit_of_measurement: W
      accuracy_decimals: 0  
      id: switch_power      
    current_resistor: ${current_res}
    voltage_divider: ${voltage_div}
  - platform: total_daily_energy
    name: Daily Energy
    power_id: switch_power
    filters:
      - multiply: 0.001 ## convert Wh to kWh
    unit_of_measurement: kWh    

output:
  - platform: gpio
    pin: GPIO5
    inverted: true
    id: led1_output
  - platform: ledc
    pin: GPIO8
    inverted: true
    id: pwm_light_output

light:
  - platform: binary
    id: led1
    output: led1_output
  - platform: monochromatic
    output: pwm_light_output
    name: "PWM Light"    

# Relays
switch:
  - platform: gpio
    pin: GPIO18
    name: "Relay 1"
    id: relay_1
    on_turn_on:
      - light.turn_on: led1
    on_turn_off:
      - light.turn_off: led1 
    restore_mode: RESTORE_DEFAULT_OFF

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO19
      mode: INPUT_PULLUP
    id: button1
    on_press:
      - switch.toggle: relay_1

time:
  - platform: homeassistant
    id: homeassistant_time