Error with esphome and SHT3xD connection

ESPHome
1

Hello, I’m trying to use my ESP to monitor temperature and humidity, but I can’t connect to sht3xd. Is there a problem with my code? Everything works fine from the Arduino IDE.

[18:26:00.344][I][i2c.arduino:099]: Results from bus scan:
[18:26:00.344][I][i2c.arduino:105]: Found device at address 0x40
[18:26:00.354][C][sht3xd:048]: SHT3xD:
[18:26:00.355][D][sht3xd:051]:   Error reading serial number
[18:26:00.355][E][sht3xd:060]:   Communication with SHT3xD failed!
[18:26:00.355][E][component:154]:   sht3xd.sensor is marked FAILED: unspecified

esphome:
  name: essai
  friendly_name: essai
  on_boot:
    priority: 200
    then:
      - lambda: |-        
          delay(500);

esp8266:
  board: esp01_1m



# Example configuration entry for ESP32
i2c:
  sda: GPIO4
  scl: GPIO5
  scan: true
  frequency: 800khz
  id: bus_a
  timeout: 10ms

sensor:
  - platform: sht3xd
    i2c_id: bus_a
    temperature:
      name: "Living Room Temperature"
    humidity:
      name: "Living Room Humidity"
    address: 0x40
    update_interval: 60s
    heater_enabled: false

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "3NKfZUQ7skFrMfc8I+2qdC/0FIUEJX8uq6tHEVqaJV8="

ota:
  - platform: esphome
    password: "5993182d1721886c1f17f4a7f8a3c970"

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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Essai Fallback Hotspot"
    password: "6NsbtmNemQBs"

captive_portal:
2

That hints your sensor might be sht2x

Try what you get with this:

i2c:
  sda: GPIO4
  scl: GPIO5

sensor:
  - platform: htu21d
    temperature:
      name: "Temperature"
    humidity:
      name: "Humidity"
3

Doesn’t this ESP01 only have GPIOs 0-3? Which pins is the sensor connected to?