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| 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. |
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− | 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. |
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− | [[fichier:BMP280.jpg|250px]] [[fichier:BMP280-v2.png|250px]]
| + | 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}}. |
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| + | [[fichier:BMP280-v2.png|250px]] |
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| 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. |
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| 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. |
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| + | 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) |