httpvh://www.youtube.com/watch?v=fjYeR5j1f-g KK2 board USBasp programmer KKMulticopter Flash Tool V1.1 Changes My Setting: Roll: P gain – 25 P limit – 100 I gain – 15  I limit – 20 Pitch: P gain – 25 P limit – 100 I gain – 15 I limit – 20  Yaw: P gain – 30 P limit – 20 I gain – 100[…]Read More