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bme280pi: the BME280 Sensor Reader for Raspberry Pi

Project description

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bme280pi: the BME280 Sensor Reader for Raspberry Pi

How to Install

Enable the I2C Interface

  1. sudo raspi-config
  2. Select "Interfacing Options"
  3. Highlight the "I2C" option, and activate "Select" (use tab)
  4. Answer the question if you'd like the ARM I2C interface to be enabled with "Yes"
  5. Select "Ok"
  6. Reboot

For a walk-through with screenshots see the references below.

Install Utilities

Install python-smbus and i2ctools: sudo apt-get update && sudo apt-get install -y python-smbus i2c-tools

Then, shut down your Raspberry Pi: sudo halt . Disconnect your Raspberry Pi power supply. You are now ready to connect the BME280 sensor.

Connect the BME280 sensor


Install This Module

Installing With pip (Recommended)

You can then install this module by running pip install bme280pi

Installing From Source

If you want the latest version, you can check out the sources and install the package yourself:

git clone
cd bme280pi
python install

Using it in your script

You can initialize the sensor class as follows:

from bme280pi import Sensor

sensor = Sensor()

You can then use the sensor object to fetch data, sensor.get_data(), which will return a dictionary with temperature, humidity, and pressure readings.

You can also just get the temperature (sensor.get_temperature()), just the pressure (sensor.get_pressure()), or just the humidity (sensor.get_humidity()).

Note that all commands support user-specified units, e.g. sensor.get_temperature(unit='F'), or sensor.get_pressure(unit='mmHg').

You can e.g. query the sensor every 10 seconds, and add the results to a dictionary, and then turn that into a pandas DataFrame and plot that (requires matplotlib and pandas):

import time
import datetime

import pandas
import matplotlib.pyplot as plt

from bme280pi import Sensor

measurements = {}

for i in range(20):
    measurements[] = sensor.get_data()

measurements = pd.DataFrame(measurements).transpose()

plt.subplot(2, 2, 1)
plt.title("Temperature (C)")

plt.subplot(2, 2, 2)
plt.title("Pressure (hPa)")

plt.subplot(2, 2, 3)
plt.title("Relative Humidity (%)")


Reporting Issues

Please feel free to report any issues you encounter at the issue tracker.


Bosch BME280 Data Sheet

Raspberry-Spy: Using BME280 sensor in python

Project details

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