Button entity unavailable on only 1 of 6 Sonoff S31 devices

ESPHome
1

I’ve got six identical Sonoff S31 power monitor plug-in switches, all of which use the same code, the only thing changing is the naming conventions. All six have button entities defined as follows:

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO0
      mode: INPUT_PULLUP
      inverted: True
    name: ${friendly_name} Button
    on_press:
      - switch.toggle: relay

The code compiles w/o error, the device comes online, and when the button is pressed, the relay toggles. So far so good.

But, according to Home Assistant, the device entity, in this case “binary_sensor.sonoff_s31_5_6289_button” shows up as unavailable whereas the entity “binary_sensor.sonoff_s31_4_6907_button” shows up as available with a valid status.

Here’s all of the code which I have been staring at for so long, I cannot see the forest for the trees.
FYI, I have no ego, comment as you wish on the code, but if you’ve been able to spot that elusive difference, I’d be eternally grateful:

The code, for your perusal -

substitutions:
  name: "sonoff-s31-5-6289"
  friendly_name: "Sonoff S31-5-6289"
  location: "Darkroom Heater Control"
  wifi_update_interval: "60s"
  data_update_interval: "6s"
#
esphome:
  name: ${name}
  platform: ESP8266
  board: esp01_1m
#  on_boot:
#    priority: 600
#    then:
#      - switch.turn_on: relay
#
text_sensor:
  - platform: wifi_info
    ip_address:
      name: ${friendly_name} IP Address
    ssid:
      name: ${friendly_name} SSID
    bssid:
      name: ${friendly_name} BSSID
    mac_address:
      name: ${friendly_name} MAC Address
  - platform: version
    name: "${friendly_name} ESPHome Version"
    hide_timestamp: true
# 
  - platform: template
    name: ${friendly_name} Location
    lambda: |-
      return { "${location}" };
#
# Enable logging
logger:
  baud_rate: 0 # (UART logging interferes with cse7766)
#  level: debug

# Enable Home Assistant API
api:
#  password: !secret esphome_api_password
  encryption:
    key: !secret esphome_api_key
#
ota:
  password: !secret esphome_api_password
#
wifi:
  networks:
    - ssid: "<SSID Redacted>"
    - password: !secret esphome_wifi_password
#
# Enable fallback hotspot (captive portal) in case wifi connection fails
#
  ap:
    ssid: ${friendly_name} FB
    password: !secret esphome_ap_fallback_pwd
#
captive_portal:
#
web_server:
  port: 80
#
# Device Specific Config
#
uart:
  rx_pin: RX
  baud_rate: 4800
#
binary_sensor:
  - platform: gpio
    pin:
      number: GPIO0
      mode: INPUT_PULLUP
      inverted: True
    name: ${friendly_name} Button
    on_press:
      - switch.toggle: relay
#
  - platform: status
    name: ${friendly_name} Status
#    
switch:
  - platform: gpio
    name: ${friendly_name} Relay
    pin: GPIO12
    id: relay
#
  - platform: restart
    name: ${friendly_name} Restart
#
sensor:
  - platform: wifi_signal
    name: ${friendly_name} WiFi Signal
    update_interval: ${wifi_update_interval}
#  
  - platform: cse7766
    update_interval: ${data_update_interval}
    current:
      id: cse7766_current
      name: ${friendly_name} Current
      accuracy_decimals: 3
      unit_of_measurement: "A"
      state_class: "measurement"
    voltage:
      id: cse7766_voltage
      name: ${friendly_name} Voltage
      accuracy_decimals: 1
      unit_of_measurement: "V"
      state_class: "measurement"
    power:
      id: cse7766_watts
      name: ${friendly_name} Power
      accuracy_decimals: 3
      unit_of_measurement: "W"
      state_class: "measurement"
    energy:
      id: cse7766_watthours
      name: ${friendly_name} Energy
      accuracy_decimals: 3
      unit_of_measurement: "Wh"
      state_class: "total"
#
  - platform: total_daily_energy
    name: ${friendly_name} Total kWh
    power_id: cse7766_watts
    unit_of_measurement: kWh
    filters:
      - multiply: 0.001
#
status_led:
  pin: GPIO13
#
time:
  - platform: sntp
    id: sntp_time
2

Hey did you ever get this solved? I have a similar issue, I think. My S31 is working well, but the button entity is showing “off,” even though the device is on. My button code is basically the same as yours.

3

I would start with deleting device in HA and adding integration again. Looks like ESPHome and HA entities not mapped well. Re-creating can fix this.