BMP085 (GY-65) - Atmospheric Pressure and Temperature Sensor, Altimeter

[Wolfgang_Z.]

Sensor Type: BMP085 (GY-65) - Atmospheric Pressure and Temperature Sensor, Altimeter

LabVIEW or C: LabVIEW

Version of LV: 2013

Description:
BMP085 is a Barometric Digital Pressure Sensor.

Typical applications are:

• Weather forecast
• Vertical velocity indication (rise/sink speed)
• Altimetry
• Enhancement of GPS navigation (dead-reckoning, slope detection, etc.)

You can either use the BMP085 sensor with the breakout board GY-65 or you can build your own circuit. In the BMP085 data sheet you can find the circuit (search for BOSCH BMP085 datasheet, typical application circuit).
The ‘BMP085 (GY-65) Library’ use the I2C protocol. You can use I2C Transfer Rate ‘Standard Mode (100 kbps)’ or ‘Fast Mode (400 kbps)’ and you can select between four different oversampling modes (measurement accuracies):

• Ultra Low Power
• Standard
• High Resolution
• Ultra High Resolution

For more information and specifications check data sheet.

Instructions:
The API is implemented on RT.
To get the measured pressure and temperature values from BMP085 use API functions in API folder from 'BMP085 (RT).lvlib’.

There is also 'Example – BMP085 (RT).vi' in Example folder.

Wiring Diagram:

[Romulo_Augusto]

Grear API, thanks!

[jesushidalgo]

Great!

[Sojourner70]

Hallo Wolfgang_Z. 

Connection diagram above: Was it not necessary to connect pullup resistors from the I2C lines (SCL & SDA) to the supply VCC?

Regards

Malan

[Wolfgang_Z.]

Hi Malan,

For the BMP085 (sensor only) you need additional resistors. Please check out the BMP085 datasheet for that.

The picture above shows the Breakoutboard GY-65. The breakoutboard includes the BMP085 and the resistors.

Regards,

Wolfgang

[sandy818]

can i connect BMP180 to myrio 1900