Note: the original supplier of GY-68 BMP180 sensor module stopped production, this listing is for the copied board by other factory.
1.8V to 3.6V Supply Voltage Low power consumption - 0.5uA at 1Hz I2C interface Max I2C Speed: 3.5Mhz Very low noise - up to 0.02hPa (17cm) Full calibrated Pressure Range: 300hPa to 1100hPa (+9000m to -500m)
2, go to the File --> Examples -->SparkfunBMP180 -->SFE_BMP180_example.
3, go to the Tool, choose the board and COM port.
4, upload the code.
5, open the Serial Monitor, choose the baud rate matching the one in the code, should be 9600, and you will get the output data. If the baud rate is not matching, the output data maybe not correct and not readable.
10 X BMP180 Digital Barometric Pressure Sensor Module I2C interface (Pin header not pre-soldered)