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ENG-CANSAT-PICO-BMP280 (voir la source)
Version du 26 février 2022 à 17:57
, 26 février 2022 à 17:57→About the BMP280 breakout
The BMP280 sensor can measure the atmospheric pressure and temperature. As the temperature also impact the sensor physics, the sensor measure it to apply appropriate correction to the measured pression.
The BMP280 sensor can measure the atmospheric pressure and temperature. As the temperature also impact the sensor physics, the sensor measure it to apply appropriate correction to the measured pression.
The BMP280 is a Bosch sensor upgraded from the BMP085/BMP180/BMP183 serie. This sensor is really great to make environmental or weather measurements. Best of all, it can be used over an I2C or a SPI bus!
The BMP280 is a Bosch sensor upgraded from the BMP085/BMP180/BMP183 serie. This sensor is really great to make environmental or weather measurements.
It can be used over an I2C or a SPI bus. Best of all, it is now fitted with a StemmaQt I2C connector (Qwiic compatible). So it is really easy to connect to a StemmaQT/Qwiic capable board like the {{pl|2271|Kit Cansat avec Raspberry-Pi Pico}}.
[[fichier:BMP280-v2.png|250px]]
It is one of the best sensor, it offer good accuracy for an affordable price. The accuracy is ±1 hPa for the pressure and ±1.0°C for the temperature. This sensor is not really made to measure the temperature but you can estimate its range with the BMP280.
It is one of the best sensor, it offer good accuracy for an affordable price. The accuracy is ±1 hPa for the pressure and ±1.0°C for the temperature. This sensor is not really made to measure the temperature but you can estimate its range with the BMP280.
To ease the usage of this sensor, the SMD component is solder on a breakout board with some additional passive electronics. The board also bring a level shifter and 3V voltage regulator so it is save for 3V and 5V logic microcontrolers.
To ease the usage of this sensor, the SMD component is solder on a breakout board with some additional passive electronics. The board also bring a level shifter and 3V voltage regulator so it is save for 3V and 5V logic microcontrolers.
More recently the sensor board have been
=== technical details ===
=== technical details ===
* [https://df.mchobby.be/datasheet/bmp280.pdf Fiche technique du BMP280] (Bosch, pdf)
* [https://df.mchobby.be/datasheet/bmp280.pdf Fiche technique du BMP280] (Bosch, pdf)