Problem connecting BME280 to ESP8266

ESPHome
1

Hi. I’m having problems connecting BME280 sensor to HA vi ESP8266 and ESPHome. I’m relatively new to this, so I don’t know where to start looking for a solution.

This is my ESPHome config:

esphome:
  name: esphome-web-4668b7
  friendly_name: ESPHome Web 4668b7

esp8266:
  board: esp01_1m

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "YflV1B8DSL0ibto71sSGqbaYV/ztX/MiHELkzkii7jQ="

ota:


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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esphome-Web-4668B7"
    password: "i8sFl3AZZirt"

captive_portal:
  
i2c:
  sda: 4
  scl: 5
  scan: true



sensor:
  - platform: bme280
    temperature:
      name: "BME280 Temperature"
      id: bme280_temperature
    pressure:
      name: "BME280 Pressure"
      id: bme280_pressure
    humidity:
      name: "BME280 Relative Humidity"
      id: bme280_humidity
    address: 0x77
    update_interval: 15s

Log file can be found here.

2

Schema of wiring ? as clearly your I2C wiring is wrong according at logs :wink:

3

You’re absolutely correct. I’ve got it working now. Not only it was only wrong wiring, but it was also wrong sensor. Turns out it is BMP not BME. This is working config:

i2c:
  sda: 4
  scl: 5
  scan: true



sensor:
  - platform: bmp280
    temperature:
      name: "BMP280 Temperature"
      id: bmp280_temperature
    pressure:
      name: "BMP280 Pressure"
      id: bmp280_pressure
    # humidity:
    #   name: "BME280 Relative Humidity"
    #   id: bme280_humidity
    
    address: 0x76
    update_interval: 15s
  - platform: template
    name: "Altitude"
    lambda: |-
      const float STANDARD_SEA_LEVEL_PRESSURE = 1013.25; //in hPa, see note
      return ((id(bmp280_temperature).state + 273.15) / 0.0065) *
        (powf((STANDARD_SEA_LEVEL_PRESSURE / id(bmp280_pressure).state), 0.190234) - 1); // in meter
    update_interval: 15s
    icon: 'mdi:signal'
    unit_of_measurement: 'm'

Wiring:

SCL -> GPIO5 (D1)
SDA -> GPIO4 (D2)
GND -> G
VIN -> 3V

P.S. Nice JR on your avatar picture. I have 3 short haired females. Best doggos in the world! :slightly_smiling_face:

4

Perfect :+1:

héhé yeah here it’s Camino (laying under my desk right now while working, he is fantastic :heart_eyes:

5

héhé yeah here it’s Camino (laying under my desk right now while working, he is fantastic :heart_eyes:

Thanks for your help and send regards to Camino from Lilly, Betza & Tzetza. :dog: :dog: :dog: