Shelly Pro 1

Information about the pinout and internals of the Shelly Pro 1.

It uses the ESP32 DOWDQ6.

Pinout

ESP32 DOWDQ6	SN74HC595B	LAN8720A	Component
GPIO 4	RCLK
GPIO 13	SER
GPIO 14	SRCLK
GPIO 17		CLKIN
GPIO 18		MDIO
GPIO 19		TXD0
GPIO 21		TXEN
GPIO 22		TXD1
GPIO 23		MDC
GPIO 25		RXD0
GPIO 26		RXD1
GPIO 27		CRS_DV
GPIO 35			Reset Button
GPIO 38			Switch input 1
GPIO 39			Switch input 2

Shift register

A shift register is controlling the status LEDs and the relay output, the pinout for it is the following:

SN74HC595B	Component
QA	Relay
QB	Out 2LED
QC	RGB Blue
QD	RGB Green
QE	RGB Red
QF	nc
QG	nc
QH	nc

The Out 1 status LED and the relay are on the same output. From what I've seen the board looks like it's being used for the Shelly Pro 1, Pro 2, Pro 1PM, and Pro 2PM. But I can't comfirm it. There are all the spaces needed for all device variants.

Programming Pinout

Basic Configuration

esphome:
  name: shelly-pro-1

esp32:
  board: esp32dev
  framework:
    type: arduino

logger:

api:

ota:

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

  ap:
    ssid: "Shelly-Pro-1"
    password: "BzwFc7HsRihG"

captive_portal:

light:
  - platform: status_led
    name: "Switch state"
    pin:
      sn74hc595: sn74hc595_hub
      number: 1
      inverted: true

#ethernet:
#  type: LAN8720
#  mdc_pin: GPIO23
#  mdio_pin: GPIO18
#  clk_mode: GPIO17_OUT

button:
  - platform: restart
    id: restart_1

binary_sensor:
  - platform: status
    id: status_1
    on_press:
      then:
        switch.turn_on: rgb_b
    on_release:
      then:
        switch.turn_off: rgb_b

  - platform: gpio
    id: reset_button
    pin:
      number: 35
      inverted: true
    on_click:
      min_length: 400ms
      max_length: 800ms
      then:
        button.press: restart_1
    on_double_click:
      then:
        switch.toggle: light1

  - platform: gpio
    id: input1
    pin:
      number: 38
    on_press:
      then:
        switch.toggle: light1

  - platform: gpio
    id: input2
    name: "Shelly Pro Button 2"
    pin:
      number: 39

sn74hc595:
  - id: "sn74hc595_hub"
    data_pin: GPIO13
    clock_pin: GPIO14
    latch_pin: GPIO4
    sr_count: 1

switch:
  - platform: gpio
    name: "Shelly Pro Relay"
    id: light1
    pin:
      sn74hc595: sn74hc595_hub
      number: 0
      inverted: false

  - platform: gpio
    id: out2
    pin:
      sn74hc595: sn74hc595_hub
      number: 1
      inverted: false

  - platform: gpio
    id: rgb_b
    pin:
      sn74hc595: sn74hc595_hub
      number: 2
      inverted: false

  - platform: gpio
    id: rgb_g
    pin:
      sn74hc595: sn74hc595_hub
      number: 3
      inverted: false

  - platform: gpio
    id: rgb_r
    pin:
      sn74hc595: sn74hc595_hub
      number: 4
      inverted: false