Recommended PIDs for a large Quadcopter?

Hi all,

Ive just finished building a 1100mm 15 pound quadcopter with:

-24 inch props

-6215 kv170hv motors with 80A esc

-Pixhawk

-12s set up with 4x8A 6s batteries

Today I did the maiden flight and it lasted 15 seconds before it flipped and crashed.

I took o

Read more…