I am willing to build a X12 multi rotor with a double Hexa-X configuration and push-pull motors.

I am going to use two HEXA XL Bl-Ctrl V3 boards 1.10c, one with the standard software and one with the 7-12 software available on the wiki.

But how should I link the two BL boards ? only with SCL and SDA (my guess) ? What connectors would you recommend ?

Where can I find the mkm parameter file for this Dodeka configuration ?

Thanks in advance.