10DOF IMU GY-86 - no data...

[merkderber]

Hi - I just soldered this up to my mwc board and am getting no readings.any input would be appreciated...(cause i aint gettin none from my GY-86! )

1.
IMU - - BOARD
3.3v --> 5v
GND --> GND
SDA --> SDA
SCL --> SCL

Is this correct?

2.
In config.h

#define I2C_SPEED 100000L
is this correct?


3.
In config.h

#define GY_86 // GY_86


Any other suggested avenues to troubleshoot?

Thanks!
M

[merkderber]

Also I'm getting I2C errors...

[howardhb]

The GY-86 is powered by a 3.3v regulator.
The I2C bus signals (SCL and SDA) are tied "high" to +3.3v via on-boad pull-up resistors.

On your MWC board, the SCL and SDA signals are tied to +5v via their own on-board resistors. So, you will need to disconnect / de-solder the I2C pull-up resistors on your MWC
You cannot have pull-ups to both 3 and 5v.

I have GY-86 and Freeimu0.4r3 (GY-86 is a cloned Freeimu) and had to disable on-board pullups on my MWC's
They both are really good IMU's

H.