Jetson Orin Nano Dev Kit – Synchronization Issues with Global Shutter Cameras

Issue Overview

Users working with the Nvidia Jetson Orin Nano Dev Kit (Jetpack v5.1.1) have reported challenges in synchronizing stereo global shutter cameras for simultaneous image capture. The primary symptoms include:

• Difficulty achieving synchronization between two global shutter cameras, particularly at frame rates exceeding 30fps.
• Uncertainty regarding the required hardware setup, such as the necessity of an external Camarray HAT or direct pin connections between the cameras.
• Struggles with configuring auto-exposure settings for cameras that do not natively support this feature.

The issue typically arises during the setup phase when users attempt to integrate specific camera models, such as the Arducam OV9281 and other similar kits. The context of these problems is often tied to hardware compatibility and software configuration.

The frequency of this issue appears to be consistent among users attempting similar projects, significantly impacting their ability to conduct effective image processing for device movement analysis.

Possible Causes

Several potential causes have been identified for the synchronization issues:

• Hardware Incompatibilities: Not all camera models may be compatible with the Jetson Orin Nano, leading to synchronization failures.

• External Hardware Requirements: The need for additional hardware, such as a Camarray HAT, may not be clearly understood by users, resulting in incorrect setups.

• Software Bugs or Configuration Errors: Users may encounter bugs within Jetpack or misconfigurations that prevent proper camera operation.

• Driver Issues: Insufficient or outdated drivers could hinder communication between the Jetson board and the cameras.

• User Misconfigurations: Incorrect wiring or settings in the camera setup can lead to synchronization problems.

Troubleshooting Steps, Solutions & Fixes

To address these issues effectively, users can follow these troubleshooting steps and solutions:

1. Verify Hardware Compatibility:

   • Check the specifications of the selected cameras against the Jetson Orin Nano’s compatibility list.
   • Recommended camera options include:
     • Arducam OV9281 Monochrome Global Shutter Camera Module
     • Arducam AR0234 Color Global Shutter Synchronized Stereo Camera Bundle Kit

2. Use External Hardware:

   • If synchronization is not achievable through direct connections, consider using an external Camarray HAT or similar hardware to facilitate communication between cameras.

3. Configure Auto-Exposure:

   • For cameras lacking native auto-exposure support, utilize Argus to configure this feature if compatible.
   • Commands to check Argus capabilities:

     # List available sensors and their features
     argus_camera --list
     

4. Test Different Configurations:

   • Isolate the issue by testing different camera setups (e.g., using only one camera at a time) and configurations (e.g., different resolutions or frame rates).

5. Update Drivers and Software:

   • Ensure that all drivers are up-to-date by checking Nvidia’s official site for any available updates related to Jetpack and camera support.

6. Consult Vendor Documentation:

   • Reach out to camera vendors for specific recommendations on optimal setups for synchronized operation with Jetson boards.

7. Best Practices for Future Use:

   • Always verify compatibility before purchasing new hardware.
   • Keep software and drivers updated regularly to avoid bugs and ensure compatibility with new features.

8. Community Support:

   • Engage with forums and user communities for shared experiences and solutions from other users who have successfully configured their setups.

By following these steps, users should be able to troubleshoot synchronization issues effectively and enhance their experience with the Jetson Orin Nano Dev Kit.