MPU9150 connection failed

Using Arduino Sensors
1

Hi,

I have tried to connect MPU 9150 sensor with Arduino Learnado using following configuration.

Arduino MPU

GND <-> GND
3.3V <-> VCC (tries 5V as well.)
SDA <-> SDA
SCL <-> SCL

I have used MPU9150_raw sketch in GitHub - sparkfun/MPU-9150_Breakout: Example code and PCB design files for the MPU-9105, 9DOF. together with I2cScanne. How ever it always end up with the error

Initializing I2C devices...
Testing device connections...
MPU9150 connection failed
Scanning...
No I2C devices found
Scanning...
No I2C devices found

My code is attached here together with screenshots of error and circuit image.

I can't understand what I am doing wrong here. Please help ?

err1.png
err1.png1700×901 94.2 KB

2

Hi,

first please check if you have the correct address of the MPU9150. It's eigther 0x68 or 0x69 depending on the AD0 pin (high or low).

Then you can try to use a modified I2C scanner because you first have the wake up the MPU9150, see here the last post and code:
https://forum.arduino.cc/index.php?topic=348287.0

If that's not working the chances are high you damaged the senor by applying 5V to it.

Hope that helps
Tim