Hello,

I’m currently encountering an issue with my VOXL 2 board. Until yesterday, it was functioning flawlessly, and we were actively using both the board and the integrated PX4 for our application.

However, following a routine reboot, the board became unresponsive and is no longer recognized as an ADB device. Running the lsusb command lists the board to be in QDL mode, which leads me to suspect potential file system corruption.

Before proceeding with the unbricking steps outlined in ModalAI’s documentation — which I’m cautious about due to a previous unsuccessful recovery attempt (here) — I’d like to understand what might have caused this issue.

Here are some relevant details about the setup:

• The board is powered via the VOXL ESC FPV 4-in-1 with Built-in Power Module (MDK-M0138-11-01).
• The ESC is powered by a 6S2P Li-ion battery, which is also connected to 5V and 12V BECs that supply power to other components.
• When powering the VOXL 2 board directly using the standalone power module (MDK-M0041-1-01), the board’s LEDs do turn on—similar to when powered via the ESC.
• Previously, the blue LED on the ESC would blink when powering the VOXL 2 board. After the issue occurred, the blue LED no longer turns on. Note that, the LEDs do start blinking when connected to another VOXL 2 board.

I’ve thoroughly inspected the setup and confirmed there are no shorts or obvious power issues. I would sincerely appreciate any insights into what might have caused this corruption and how to prevent it in the future.

Regards,
Ashwin

Hello @Alex-Kushleyev @Eric-Katzfey

I am looking to control the servo via PX4.
Essentially, it will be a command either from the RC or GCS to open / close the servo motor.

But, if that is infeasible, I can make it work via an API on the CPU / Linux on VOXL 2 to be controlled via SSH.

Regards,
Ashwin

Hello @Nathan-Raras ,

I apologize for missing your response.

I understand that it has been quite a while.
May I ask where can I locate the requested path?
'''
modal-qdl/qdl/qfil_app/src/data/qfil/cdt
'''

As I understand it, this path is present on VOXL, but I am not able to access VOXL at all.

Regards,
Ashwin

Hello,

Can someone kindly respond to this query?

Regards,
Ashwin

@tom Thanks for the quick response.
This board seems like a good option.

May I know the weight for this board, as the documentation just says X grams.

Regards,
Ashwin

Hello,

I am currently exploring the development of an FPV system and would like to integrate a compact microphone for audio capture.

Could you please advise if there are any available ports on the VOXL 2 that would support this functionality? Additionally, I would appreciate any recommendations for miniature microphones that are compatible with the VOXL 2 platform.

Looking forward to your guidance.

Regards,
Ashwin

Hello,

I am currently working on a project involving the VOXL 2 platform and would like to control a servo motor within my existing system architecture. Below is a summary of the current configuration:

• RC, GPS, and Magnetometer are connected to the J19 port.
• An FPV ESC is connected to the J18 port.
• The M0151 expansion board is connected to a Doodle Labs module.

I am considering two possible approaches for integrating servo motor control:

• Using the IO Expansion Board via a free UART Port on the M0151 Board
  I plan to connect the IO Expansion Board to an available UART port on the M0151. I would like to confirm whether this setup would support reliable servo motor control.

• Connecting the IO Expansion Board to J19 and connecting receiver to J2 terminal of IO Expansion Board

Could you please advise on the feasibility and potential limitations of both configurations? I would appreciate any insights or recommendations you may have.

Please feel free to reach out if any further clarification is needed.

Regards,
Ashwin

@Eric-Katzfey I attempted to access the Hexagon SDK 4.x via the Qualcomm Software Center but encountered the same licensing and access issues. The VOXL2 device I'm working with was purchased from ModalAI. Given that it's part of a development kit, is the SDK license provided through ModalAI, or does it need to be obtained separately through Qualcomm? Some clarification regarding this would be helpful.

I want a flash a custom px4 firmware on VOXL2. I am following the instructions given here : https://gitlab.com/voxl-public/voxl-sdk/services/voxl-px4/-/blob/020daa00a68e353a2116060c990c28718c4d7c21/README.md, which led me here: https://gitlab.com/voxl-public/rb5-flight/rb5-flight-px4-build-docker/-/blob/1e1baf9c45bf108331ac4e9857c04768ea7097ca/README.md. So I need to install qualcomm package manager. All the links lead me to qpm3. I installed it and successfully logged in. The hexagon sdk 4.x is not available on the site. Instead, I got this: https://www.qualcomm.com/developer/software/hexagon-npu-sdk. None of the "sign agreement" links work. trying to install hexagon sdk 4.x on qpm3 causes it to say that i have no license. Here are the outputs of the commands I ran:

 qpm-cli --license-activate hexagonsdk4.x

[Info] : Activating license : hexagonsdk4.x
[Error] : License activation failed. Error: Error Getting LicenseIDs

 qpm-cli --install hexagonsdk4.x

[Error] : License check failed.
[Error] : Valid license is required for download. Please activate license first using command: qpm-cli --license-activate hexagonsdk4.x
[Error] : Failed downloading latest package of hexagonsdk4.x

In general, if someone has flashed a custom px4 firmware on VOXL2, could you guide or help me towards correct resources?

I am using Voxl2 with a QRB5165 processor, and ubuntu linux on my pc.

Hello @tom ,

Just following up on this.
Is there any potential way to revive the board?

Regards,
Ashwin