Jetson Orin Nano Dev Kit Power Supply Through Expansion Header

Issue Overview

Users are experiencing uncertainty regarding the ability to supply 5V power to the Jetson Orin Nano Dev Kit through the 5V pins on the expansion header. The issue arises during the design phase of projects utilizing the development kit, where users seek to confirm compatibility with previous models, such as the Jetson Nano.

The primary symptoms include:

• Confusion about power supply options: Users have noted discrepancies between their experiences with the Jetson Nano and the specifications for the Orin Nano.
• Reference to documentation: A diagram in the documentation indicates a "Back Power Blocking Circuit" associated with the expansion connector, leading to questions about its implications for power supply.

The issue is consistent among users who have previously worked with the Jetson Nano and are now transitioning to the Orin Nano. The uncertainty impacts their design decisions and may lead to potential project delays or failures if incorrect assumptions are made.

Possible Causes

• Hardware incompatibility: The presence of a back power blocking circuit in the Orin Nano may prevent power from being supplied through the expansion header, unlike in the Jetson Nano.

• Documentation ambiguity: Conflicting interpretations of documentation may lead users to believe that powering through the expansion header is feasible when it is not.

• User error or misconfiguration: Users may incorrectly assume that methods applicable to previous models can be applied to newer versions without verification.

Troubleshooting Steps, Solutions & Fixes

1. Verify Documentation:

   • Review the official Jetson Orin Nano documentation for specific details regarding power supply options and limitations.
   • Pay particular attention to sections discussing power management and expansion headers.

2. Inspect Hardware Configuration:

   • Check for any visible indicators on the board that confirm or deny compatibility with external power supplies through expansion headers.

3. Testing Power Supply Options:

   • If feasible, test powering the device through other approved methods (e.g., using a dedicated power adapter) rather than through the expansion header.

4. Consult Community and Support Channels:

   • Engage with forums or NVIDIA support for clarification on this issue, especially if other users have faced similar challenges.

5. Follow Best Practices:

   • Always adhere to manufacturer guidelines when designing with development kits.
   • Avoid making assumptions based on experiences with previous models unless explicitly confirmed by documentation or support.

6. Recommended Approach:

   • Based on user feedback, it is confirmed that powering through the 5V pins on the expansion header is not possible due to the blocking circuit. Users should utilize alternative power supply methods as outlined in official resources.

7. Future Prevention:

   • Stay updated with firmware and documentation releases from NVIDIA regarding any changes or updates that might affect power supply configurations.

By following these steps, users can effectively navigate potential issues related to powering their Jetson Orin Nano Dev Kit through its expansion header while minimizing risks associated with hardware damage or project setbacks.