devices.esphome.io
Shelly Pro 2
Shelly Pro 2
Device Type: relayBoard: esp32
Information about the pinout and internals of the Shelly Pro 2.
It's the same board as the Shelly Pro 1. The only difference is the addition of a second relay.
Pinout
| ESP32 DOWDQ6 | Component |
|---|---|
| GPIO 4 | SN74HC595B SPI CS |
| GPIO 12 | SPI MISO |
| GPIO 13 | SPI MOSI |
| GPIO 14 | SPI CLK |
| GPIO 17 | LAN8720A CLKIN |
| GPIO 18 | LAN8720A MDIO |
| GPIO 19 | LAN8720A TXD0 |
| GPIO 21 | LAN8720A TXEN |
| GPIO 22 | LAN8720A TXD1 |
| GPIO 23 | LAN8720A MDC |
| GPIO 25 | LAN8720A RXD0 |
| GPIO 26 | LAN8720A RXD1 |
| GPIO 27 | LAN8720A CRS_DV |
| GPIO 35 | Reset Button |
| GPIO 36 | ADC Temperature 1 |
| GPIO 37 | ADC Temperature 2 |
| GPIO 38 | Switch input 1 |
| GPIO 39 | Switch input 2 |
Shift register
A shift register is controlling the WIFI RGB LEDs and the 2 relays.
| SN74HC595B | Component |
|---|---|
| QA | Relay 1 + Out 1 LED |
| QB | Relay 2 + Out 2 LED |
| QC | WIFI RGB LED (Blue) |
| QD | WIFI RGB LED (Green) |
| QE | WIFI RGB LED (Red) |
| QF | NC |
| QG | NC |
| QH | NC |
The Out 1 status LED and the relay 1 are on the same output. The same is true for the Out 2 status LED and the relay 2. Turning on the relay turns the corresponding LED on.
The WIFI LED is an RGB LED. By turning each component on or off, you have access to 8 configurations:
| R | G | B | Color |
|---|---|---|---|
| 0 | 0 | 0 | OFF |
| 0 | 0 | 1 | Blue |
| 0 | 1 | 0 | Green |
| 0 | 1 | 1 | Cyan |
| 1 | 0 | 0 | Red |
| 1 | 0 | 1 | Magenta |
| 1 | 1 | 0 | Yellow |
| 1 | 1 | 1 | White |
Programming Pinout
Note that the pin pitch is 1.27mm, so standard 2.54mm Dupont cables won't work.
Basic Configuration
esphome: name: shelly-pro-2
esp32: board: esp32dev framework: type: arduino
logger:
api:
ota: platform: esphome
wifi: ssid: !secret wifi_ssid password: !secret wifi_password ap: ssid: "Shelly-Pro-2" password: "BzwFc7HsRihG"
# ethernet:# type: LAN8720# mdc_pin: GPIO23# mdio_pin: GPIO18# clk_mode: GPIO17_OUT
captive_portal:
spi: clk_pin: GPIO14 mosi_pin: GPIO13 miso_pin: number: GPIO12 ignore_strapping_warning: true
button: - platform: shutdown id: do_shutdown - platform: restart name: "Restart" id: do_restart
binary_sensor: - platform: gpio id: reset_button pin: number: 35 inverted: true on_release: then: button.press: do_restart
- platform: gpio id: input1 pin: number: 38 on_press: then: switch.toggle: relay1
- platform: gpio id: input2 pin: number: 39 on_press: then: switch.toggle: relay2
sensor: - platform: adc id: temp_voltage1 pin: GPIO36 attenuation: auto - platform: resistance id: temp_resistance1 sensor: temp_voltage1 configuration: DOWNSTREAM resistor: 10kOhm - platform: ntc sensor: temp_resistance1 name: Temperature 1 unit_of_measurement: "°C" accuracy_decimals: 1 icon: "mdi:thermometer" calibration: b_constant: 3350 reference_resistance: 10kOhm reference_temperature: 298.15K on_value_range: - above: 90 then: - switch.turn_off: relay1 - switch.turn_off: relay2 - button.press: do_shutdown
- platform: adc id: temp_voltage2 pin: GPIO37 attenuation: auto - platform: resistance id: temp_resistance2 sensor: temp_voltage2 configuration: DOWNSTREAM resistor: 10kOhm - platform: ntc sensor: temp_resistance2 name: Temperature 2 unit_of_measurement: "°C" accuracy_decimals: 1 icon: "mdi:thermometer" calibration: b_constant: 3350 reference_resistance: 10kOhm reference_temperature: 298.15K on_value_range: - above: 90 then: - switch.turn_off: relay1 - switch.turn_off: relay2 - button.press: do_shutdown
sn74hc595: - id: 'sn74hc595_hub' type: spi latch_pin: GPIO4 sr_count: 1
switch: - platform: gpio name: "Relay 1" id: relay1 pin: sn74hc595: sn74hc595_hub number: 0 inverted: false
- platform: gpio name: "Relay 2" id: relay2 pin: sn74hc595: sn74hc595_hub number: 1 inverted: false
- platform: gpio id: wifi_led_blue pin: sn74hc595: sn74hc595_hub number: 2 inverted: true
- platform: gpio id: wifi_led_green pin: sn74hc595: sn74hc595_hub number: 3 inverted: true
- platform: gpio id: wifi_led_red pin: sn74hc595: sn74hc595_hub number: 4 inverted: true