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| + | == BME280 Breakout == |
| + | {{ADFImage|BME280-pinout-01.jpg|640px}} |
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| + | == Alimentation == |
| + | * '''Vin''' - this is the power pin. Since the sensor chip uses 3 VDC, we have included a voltage regulator on board that will take 3-5VDC and safely convert it down. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V |
| + | * '''3Vo''' - this is the 3.3V output from the voltage regulator, you can grab up to 100mA from this if you like |
| + | * '''GND''' - common ground for power and logic |
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| + | == Bus SPI == |
| + | All pins going into the breakout have level shifting circuitry to make them 3-5V logic level safe. Use whatever logic level is on '''Vin'''! |
| + | * '''SCK''' - Broche du signal d'horloge ('''S'''PI '''C'''loc'''k'''), c'est une broche d'entrée du BME280 |
| + | * '''SDO''' - Broche de Sortie de donnée ('''S'''erial '''D'''ata '''O'''ut / Master In Slave Out pin), for data sent from the BMP183 to your processor |
| + | * '''SDI''' - Broche d' Entrée de donnée ('''S'''erial '''D'''ata '''I'''n / Master Out Slave In pin), for data sent from your processor to the BME280 |
| + | * '''CS''' - this is the Chip Select pin, drop it low to start an SPI transaction. Its an input to the chip |
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| + | If you want to connect multiple BME280's to one microcontroller, have them share the SDI, SDO and SCK pins. Then assign each one a unique CS pin. |
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| + | == Bus I2C == |
| + | * '''SCK''' - this is ''also'' the I2C clock pin, connect to your microcontrollers I2C clock line. |
| + | * '''SDI''' - this is ''also'' the I2C data pin, connect to your microcontrollers I2C data line. |
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| + | Leave the other pins disconnected |
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| {{BME280-TRAILER}} | | {{BME280-TRAILER}} |