I have connected up a BMP085 barometric pressure sensor (breakout board) from sparkfun to an arduino nano using the i2c bus (A4 - SDA and A5 -SCL) and it doesn't seem to be recognised by the arduino. I've run the arduino i2c scanner ( Arduino Playground - I2cScanner ) to see if anything is connected …

BMP085 Sensor Not Working

system November 14, 2012, 1:29pm 3

I've got the VCC pin going to 3.3v and GND to ground.

Have you got to configure analog pins 4 and 5 for i2C or is that what the wire library does?

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