Question about X and H frame

[Josephjj]

I created a H frame drone but little did I realised the prop direction is different from X.

Is there any difference between H and X in terms of firmware control?

If I used X frame type on a H frame drone would anything happen?

[Oli1 (Oli)]

I remember reading that there actually is a difference regarding frame physics. Definitely set FRAME_TYPE to 3 and order the motors so they’re spinning correctly.

EDIT, here:

@LupusTheCanine

IIRC it is affected by torsion coupling, physical H style frames are assumed to be slightly twisty, default motor rotation directions would cause negative coupling between yaw and frame twist, thrust imbalance caused by yaw command would cause twist vectoring thrust to counteract desired yawing. By reversing motor directions you can achieve positive coupling so frame twist assists yawing.

[Jai.GAY]

@Josephjj

X frame type on a H frame drone would anything happen?

These are supported motor layout. You cannot be creativity without modifying the firmware.

For example, DJI X, Quad CW X, and Quad X have different motor control algorithm.

@Josephjj

little did I realised the prop direction is different from X.

I am not sure what motor you are using, usually we swap two motor wires to have the opposite direction.

[Josephjj]

Sadly, that would not be possible unless I completely redo the entire drone. My motor are also in cw and ccw. I wish its as simple as switching the wire. I think i go with x.

[Oli1 (Oli)]

What ESCs do you use? BLHeli allows to change direction in the ESC configurator.