Issue with Pan & Tilt independence on Navigator: Pan triggers Tilt and has low power

Blue Robotics Software ArduSub
1

Hello everyone,

I am trying to set up a camera with an independent Pan & Tilt mount on my ROV using the Navigator flight controller, but I am running into some strange behavior that I can’t seem to resolve.

My current setup:

  • Flight Controller: Navigator

  • Camera Mount: MNT1_TYPE is set to 1 (Servo).

  • Tilt Servo: Assigned to Channel 16.

  • Pan Servo: Assigned to Channel 10.

The issues:

  1. The Tilt axis works perfectly fine and accepts independent commands without any problem.

  2. However, the Pan axis is not independent. Whenever I try to move the Pan servo, the Tilt servo moves along with it simultaneously.

  3. Additionally, the Pan servo seems to be visibly weaker and has very low power/torque compared to the Tilt servo.

I am completely sure this might be a configuration crossover or a power issue, but I haven’t been able to separate the Pan from the Tilt.

Has anyone experienced this specific behavior with the Navigator? Could this be a software mapping conflict in ArduSub/Cockpit, or does it sound more like a hardware/voltage drop issue affecting the PWM signal (3.3V logic level) when the Pan operates?

Any guidance or troubleshooting steps would be greatly appreciated!

2

Hi @ATLASUBSEA -

Can you share what you have set the servo_funciton_10 to? Is this mnt1_yaw?

Sharing a .BIN log would be helpful in assisting you - you can find this under autopilot logs - arm the vehicle, test your servo functionality , disarm, download and send the log file.

It should be possible to operate the two servos independently!

3

Hi Tony,

Please accept my sincere apologies for the delay in getting back to you; we have been fully occupied with another project, and the integration of the pan and tilt system had to be put on hold.

Regarding the issue, I suspect the erratic behavior might stem from a faulty installation or a corrupted instance of our current BlueOS version. I will be running some tests to verify this.

I will keep you informed of our progress and plan to upload the requested .BIN log, along with the servo_function_10 configuration details, in the coming days.

Thank you very much for your time and continued support.