Orange Cube’s IMU1 accelerometer shows interference when matching Telem2 baud rate to Gremsy gimbal MAVLink for control

Hi everyone,

Running ArduCopter on Orange Cube with Gremsy Pixy LR gimbal via Telem2 (SERIAL2_PROTOCOL=2 MAVLink2).

Issue: Mismatched baud rates (e.g., SERIAL2_BAUD ≠ gimbal MAVLink baudrate setting) prevent full gimbal control—no pitch/roll/yaw commands accepted. But when synced (both at 115200), gimbal responds perfectly to commands from the RC. Yet GQC, UniGCS immediately flags IMU1 (primary accel) anomalies—specifically Z-axis telemetry clipping/jitter, confirmed repeatable by cable unplug/replug.

I am still able to fly the quadcopter without issue but the glitch is not reassuring as it is a drone for work.

Have you any idea or fix for that sort of problem?

Thank you,
Jean-Eudes

Hello?

Anyone?

Thank you :slight_smile: