Board power input. Adafruit states the onboard regulator takes 3-5VDC and converts it down for the BMP3xx sensor.
3.3V output from the onboard voltage regulator, available for small external loads.
Common ground for power and logic.
SPI clock input, also I2C clock when using I2C mode. Adafruit states breakout inputs are 3-5V logic-level safe.
SPI serial data out / MISO from the BMP3xx to the controller.
I2C · SPI · 3-5V DC input · 3.3V output, up to 100mA per Adafruit guide
Confirm the data interface matches your host board.
Module pins: VIN, 3Vo, GND, SCK / SCL, SDO, SDA / SDI, CS, INT. Schematik maps them to your board in the app.
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I2C data line, also SPI serial data in / MOSI to the BMP3xx.
SPI chip-select input, pulled low to start an SPI transaction.
Interrupt output from the BMP3xx for data-ready signalling.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VIN | power | Board power input. Adafruit states the onboard regulator takes 3-5VDC and converts it down for the BMP3xx sensor. | 3-5V DC input | |
| 3Vo | power | 3.3V output from the onboard voltage regulator, available for small external loads. | 3.3V output, up to 100mA per Adafruit guide | |
| GND | ground | Common ground for power and logic. | 0V | |
| SCK / SCL | signal | SPI clock input, also I2C clock when using I2C mode. Adafruit states breakout inputs are 3-5V logic-level safe. | 3-5V logic input | |
| SDO | signal | SPI serial data out / MISO from the BMP3xx to the controller. | 3.3V logic output, readable by 5V microcontrollers | |
| SDA / SDI | signal | I2C data line, also SPI serial data in / MOSI to the BMP3xx. | 3-5V logic input | |
| CS | signal | SPI chip-select input, pulled low to start an SPI transaction. | 3-5V logic input | |
| INT | signal | Interrupt output from the BMP3xx for data-ready signalling. | 3.3V logic output, readable by 5V microcontrollers |