I2C barometric pressure and temperature breakout (BMP085) with onboard 3.3 V regulator and I2C level shifter for 5 V systems. Superseded by BMP180/BMP280; use newer variants for new designs.
Board power input. Adafruit product page says to connect VIN to the 5V voltage pin when using Arduino; board includes a 3.3V regulator and I2C level shifter.
Ground reference. Adafruit product page says to connect GND to ground.
I2C clock. Adafruit product page says to connect SCL to I2C Clock, Arduino Analog 5 in the example.
I2C data. Adafruit product page says to connect SDA to I2C Data, Arduino Analog 4 in the example.
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VIN | Power | Board power input. Adafruit product page says to connect VIN to the 5V voltage pin when using Arduino; board includes a 3.3V regulator and I2C level shifter. | 5V Arduino connection stated by Adafruit product page; board is described as 5V-compliant with onboard 3.3V regulator |
| GND | Ground | Ground reference. Adafruit product page says to connect GND to ground. | |
| SCL | I2C | I2C clock. Adafruit product page says to connect SCL to I2C Clock, Arduino Analog 5 in the example. | I2C logic is level-shifted on the board per Adafruit product page |
| SDA | I2C | I2C data. Adafruit product page says to connect SDA to I2C Data, Arduino Analog 4 in the example. | I2C logic is level-shifted on the board per Adafruit product page |
Board power input. Adafruit product page says to connect VIN to the 5V voltage pin when using Arduino; board includes a 3.3V regulator and I2C level shifter.
Ground reference. Adafruit product page says to connect GND to ground.
I2C clock. Adafruit product page says to connect SCL to I2C Clock, Arduino Analog 5 in the example.
I2C data. Adafruit product page says to connect SDA to I2C Data, Arduino Analog 4 in the example.
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
Confirm the data interface matches your host board.
Module pins: VIN, GND, SCL, SDA. Schematik maps them to your board in the app.
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