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* e.g. to e.g., and proper case for Home Assistant * Instructions how to -> Instructions on how to
223 lines
7.2 KiB
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223 lines
7.2 KiB
Markdown
---
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layout: page
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title: "BME680 Sensor"
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description: "Instructions on how to integrate a BME680 sensor into Home Assistant."
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date: 2018-01-16 00:00
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sidebar: true
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comments: false
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sharing: true
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footer: true
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logo: raspberry-pi.png
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ha_category: Sensor
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ha_release: 0.62
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ha_iot_class: "Local Push"
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---
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The `bme680` sensor platform allows you to read temperature, humidity, pressure and gas resistance values of a [Bosch BME680 Environmental sensor](https://cdn-shop.adafruit.com/product-files/3660/BME680.pdf) connected via an [I2C](https://en.wikipedia.org/wiki/I²C) bus (SDA, SCL pins). It allows you to use all the operation modes of the sensor described in its datasheet. In addition, it includes a basic air quality calculation that uses gas resistance and humidity measurements to calculate a percentage based air quality measurement.
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Tested devices:
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- [Raspberry Pi](https://www.raspberrypi.org/)
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To use your BME680 sensor in your installation, add the following to your `configuration.yaml` file:
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```yaml
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# Example configuration.yaml entry
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sensor:
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- platform: bme680
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```
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{% configuration %}
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name:
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description: The name of the sensor
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required: false
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default: BME680 Sensor
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type: string
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i2c_bus:
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description: I2C bus that the sensor is connected to.
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required: false
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default: 1
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type: int
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i2c_address:
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description: I2C address of the sensor. It is 0x76 or 0x77.
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required: false
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default: 0x77
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type: int
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monitored_conditions:
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description: Conditions to monitor.
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required: false
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default:
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- temperature
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- humidity
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- pressure
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- airquality
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type: list
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keys:
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temperature:
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description: Monitor temperature.
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humidity:
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description: Monitor relative humidity.
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pressure:
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description: Monitor pressure.
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gas:
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description: Monitor gas resistance values on the VOC sensor.
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airquality:
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description: Monitor air quality using the values of humidity and gas resistance and calculate a percentage based air quality measurement.
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oversampling_temperature:
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description: Oversampling multiplier as described in the sensor datasheet. Can be 0 (no sampling), 1, 2, 4, 8, or 16.
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required: false
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default: 8
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type: int
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oversampling_pressure:
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description: Oversampling multiplier as described in the sensor datasheet. Can be 0 (no sampling), 1, 2, 4, 8, or 16.
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required: false
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default: 2
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type: int
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oversampling_humidity:
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description: Oversampling multiplier as described in the sensor datasheet. Can be 0 (no sampling), 1, 2, 4, 8, or 16.
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required: false
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default: 4
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type: int
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filter_size:
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description: IIR filter size as described in the sensor datasheet. Can be 0 (off), 1, 3, 7, 15, 31, 63 or 127.
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required: false
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default: 3
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type: int
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gas_heater_temperature:
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description: The temperature to heat the hotplate to for gas resistance measurements as described in the sensor datasheet. Can be between 200-400°C.
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required: false
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default: 320
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type: int
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gas_heater_duration:
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description: The duration to heat the hotplate in milliseconds for gas resistance measurements as described in the sensor datasheet. Can be between 1-4032 ms. In reality, you will likely need between 80-100ms to reach a stable temperature. Using a duration greater than 1000ms is inadvisable as it will essentially result in the heater being continually on due to the 1-second update interval.
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required: false
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default: 150
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type: int
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aq_burn_in_time:
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description: The duration to perform gas resistance measurements to establish a stable baseline measurements for Air Quality calculations in seconds. The burn in time is only performed when the sensor component is first initialized.
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required: false
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default: 300
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type: int
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aq_humidity_baseline:
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description: The baseline *ideal* relative humidity value for the air quality calculations.
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required: false
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default: 40
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type: int
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aq_humidity_bias:
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description: The bias for humidity to the gas resistance measurement in the air quality calculations expressed as a percentage of the total calculation e.g., 25% hudidtity to 75% gas.
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required: false
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default: 25
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type: int
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{% endconfiguration %}
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## {% linkable_title Full Examples %}
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If you want to specify the working mode of the digital sensor or need to change the default I2C address (which is 0x77), add more details to the `configuration.yaml` file:
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```yaml
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# Example of customized configuration.yaml entry
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sensor:
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- platform: bme680
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name: BME680 Sensor
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i2c_bus: 1
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i2c_address: 0x77
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monitored_conditions:
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- temperature
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- humidity
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- pressure
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- gas
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- airquality
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oversampling_temperature: 8
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oversampling_humidity: 2
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oversampling_pressure: 4
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filter_size: 3
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gas_heater_temperature: 320
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gas_heater_duration: 150
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aq_burn_in_time: 300
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aq_humidity_baseline: 40
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aq_humidity_bias: 25
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```
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## {% linkable_title Customizing the sensor data %}
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Give the values friendly names and icons, add the following to your `customize:` section.
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```yaml
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# Example configuration.yaml entry
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customize:
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sensor.bme680_sensor_temperature:
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icon: mdi:thermometer
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friendly_name: Temperature
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sensor.bme680_sensor_humidity:
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icon: mdi:water
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friendly_name: Humidity
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sensor.bme680_sensor_pressure:
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icon: mdi:gauge
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friendly_name: Pressure
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sensor.bme680_sensor_air_quality:
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icon: mdi:blur
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friendly_name: Air Quality
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```
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To create a group, add the following to your `group` section.
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```yaml
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# Example configuration.yaml entry
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group:
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climate:
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name: Climate
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entities:
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- sensor.bme680_sensor_temperature
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- sensor.bme680_sensor_humidity
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- sensor.bme680_sensor_pressure
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- sensor.bme680_sensor_air_quality
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```
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## {% linkable_title Directions for installing SMBus support on Raspberry Pi %}
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Enable I2C interface with the Raspberry Pi configuration utility:
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```bash
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# pi user environment: Enable I2C interface
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$ sudo raspi-config
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```
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Select `Interfacing options->I2C` choose `<Yes>` and hit `Enter`, then go to `Finish` and you'll be prompted to reboot.
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Install dependencies to use the `smbus-cffi` module and add your _homeassistant_ user to the _i2c_ group:
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```bash
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# pi user environment: Install I2C dependencies and utilities
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$ sudo apt-get install build-essential libi2c-dev i2c-tools python-dev libffi-dev
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# pi user environment: Add homeassistant user to the I2C group
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$ sudo addgroup homeassistant i2c
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# pi user environment: Reboot Raspberry Pi to apply changes
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$ sudo reboot
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```
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### {% linkable_title Check the I2C address of the sensor %}
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After installing `i2c-tools`, a new utility is available to scan the addresses of the connected sensors:
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```bash
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$ /usr/sbin/i2cdetect -y 1
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```
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It will output a table like this:
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```text
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0 1 2 3 4 5 6 7 8 9 a b c d e f
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00: -- -- -- -- -- -- -- -- -- -- -- -- --
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10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
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40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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70: -- -- -- -- -- -- -- 76
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```
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So you can see the sensor address that you are looking for is **0x76** (there is another I2C device on that Raspberry Pi).
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