Hi,
I have assembled 450 quad with the following hardware.
1. Flight controller KK2.1.5.
2. Lipo battery 11.1 V 3S (orange)
3. ESC 30 A ( Make XXD with 3 A BEC)
4. Propellers: orange 10 X4.5
5. BLDC: Ready to sky 2212
6. Transmitter : Flysky i6
7.Receiver : Flysky iA6.
The issue i am facing is the steps mentioned in KK2.1.5 user manual for calibrating ESC followed correctly, but still M2 is rotating are double the RPM as compared to M1, M3, M4. RPM checked by handheld tachometer. Can anybody help me out with this issueof calibrating ESC.