Hey guys,

I'm trying to use the serial API to remotely control a CAME-TV 7800 gimbal via the CMD_CONTROL command in MODE_SPEED. The Values are seemingly transmitted correctly with the corresponding headers and checksums.

My problem is, that the value used for SPEED_YAW seems to be completely ignored. The motor works fine and can be controlled via analog stick. Commands with SPEED_ROLL and SPEED_PITCH causes movement along those axes as well, only yaw seems to be faulty. Even weirder is the fact that when I only transmit the value for yaw, it is instead the pitch that moves.

Are there any settings for the firmware I'm missing? The gimbal is set in a profile without yaw following.

Here are some example commands sent:

pitch: 0 yaw: 216
body: 0x1 0x0 0x0 0x0 0x0 0xd8 0x0 0x0 0x0 0x0 0x0 0x0 0x0
pitch: 0 yaw: 222
body: 0x1 0x0 0x0 0x0 0x0 0xde 0x0 0x0 0x0 0x0 0x0 0x0 0x0

If I understand the specification correctly, these bytes can be broken down as follows:
0x1 - MODE_SPEED
0x0 - 2 bytes SPEED_ROLL = 0
0x0
0x0 - 2 bytes SPEED_PITCH = 0
0x0
0xd8 - 2 bytes signed, little endian SPEED_YAW = 218
0x0

0x0 - six bytes with zero value, two for each ANGLE on the 3 axes

Even in this example, the only axis that moves is the pitch instead of the yaw.

In normal operation, the gimbal behaves without any issues. Does anyone see an error ?

Thanks :)