MultiWii

hi everybody, here is the problem :

I'm trying to connect these elements :

- arduino pro mini board (exactly a clone, a Xino Pro Mini) with AT328;
- 10DOF GY-80

here a photo of what I'm doing :

https://drive.google.com/file/d/0B83dBSxPEiOoRXVpVkhIeHNIZXM/edit?usp=sharing

I'm using MW 2.3, QUADX configuration, in GUI I can see a very lot of i2c errors; I tested the good wiring connections more time, I think all is correct; the same DOF works fine connected to a Nano, using same pull-up resistors' values; I'm in a dead point, I don't know what I have to investigate more....

please give me some suggestions

regards

What is the I2C speed set to on the two MultiWii boards?
If set to 100000 on the Nano then ensure the new FC is set to 100000.

Disable pullups.
Shorten i2c wires.