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    • R

      AprilTag Localization and landing

      Ask your questions right here!
      • • • Rupesh
      4
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      4
      Posts
      139
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      R

      @ApoorvThapliyal Thank you for your reply.
      I tried voxl-vision-hub --debug_fixed_frame while showing AprilTag to the tracking camera with different orientations, but got some warnings about qvio.
      682929b8-d9dd-49a6-b36a-b873d1f365d2-Screenshot 2025-10-03 182038.png
      Since this was a warning about qvio, I checked voxl-inspect-qvio, and it was working okay.

      Additionally, I wanted to integrate AprilTag Localization with voxl2_takeoff_land.py. Is it possible to make it work if I add the following code between the 'takeoff' and 'landing' commands?
      try:
      await drone.offboard.set_position_ned(PositionNedYaw(0, 0, -1.0, 0))
      await drone.offboard.start()
      except OffboardError as e:
      print(f"Offboard start failed: {e._result.result}")

      await asyncio.sleep(20) print("-- Stopping Offboard mode") try: await drone.offboard.stop() except OffboardError as e: print(f"Offboard stop failed: {e._result.result}")

      I tried to operate it without propellers and got the following logs in PX4.
      fecd98f3-682b-44e9-9c24-3cf7e95a5a9f-Screenshot 2025-10-03 183324.png
      The set points appear to be at the origin instead of those defined by AprilTag. Can you please help me with this?

    • L

      Flight Core V2 Magnetometer and Barometer Issues

      Ask your questions right here!
      • • • linmur02
      2
      0
      Votes
      2
      Posts
      26
      Views

      Eric KatzfeyE

      @linmur02 When you say "latest", which version, specifically, are you using? Yes, the FC V2 does have an internal magnetometer, but in both the ModalAI fork and on mainline the internal magnetometer is not enabled so any mag issues should be related to the mag on the GPS unit. Is the GPS being seen reliably? The barometer is on the board and shouldn't have any issues. If you disconnect that GPS unit do you still see occasional barometer missing errors? Also, can you start swapping out hardware to see if the issues are related to a hardware problem?

    • S

      ADB stops working followed by failed unbricking

      VOXL SDK
      • • • SKA
      1
      0
      Votes
      1
      Posts
      13
      Views

      No one has replied

    • J

      M0181 Pin Out and Electrical Diagram

      Support Request Format for Best Results
      • flir • • joseph.vale
      9
      0
      Votes
      9
      Posts
      31
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      VinnyV

      Thanks @joseph-vale for the kind words.
      We will continue to try our best 🙂
      Our success only comes with your success.

    • W

      Malfunction the J connector on VOXL 2 investigation

      Ask your questions right here!
      • • • will.huang.oksi
      9
      0
      Votes
      9
      Posts
      75
      Views

      VinnyV

      Hi @will-huang-oksi

      Sorry there is not much else I can offer. I'd need to have the HW in my hands to diagnose.

      I'd start with the basics, Power. It is possible you blew the VBUS protection circuit that feeds J3 VBUS. It is also possible that GPIO_157 which enables VBUS on J3 is not correctly set in SW.
      However, I still ask you discontinue use of M0151 for Doodle as you will have problems in the future and we cannot continue to support that.

      Please follow the guidance listed in our cable page for Doodle. Those boards listed do not use the "VBUS" from J3 (rather we power switch the 5V DC Local with proper Hub monitoring), so you can likely recover proper functionality and continue with your efforts.
      Thanks!

    • M

      Deleted "/" by error

      VOXL Flight Deck
      • • • marian
      8
      0
      Votes
      8
      Posts
      717
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      tomT

      @marian Unfortunately VOXL1 has really been phased out but this board has the "fastboot" button on it and should work for you: https://www.modalai.com/collections/expansion-board/products/voxl-microhard-modem-usb-hub

    • P

      voxl-camera-server failed to set pipe size: Cannot allocate memory

      Ask your questions right here!
      • • • paul.foley
      1
      0
      Votes
      1
      Posts
      15
      Views

      No one has replied

    • Rowan DempsterR

      Optimizing DSP Load wr.t. IO

      VOXL 2
      • • • Rowan Dempster
      3
      0
      Votes
      3
      Posts
      34
      Views

      Eric KatzfeyE

      @Alex-Kushleyev The IMU is being configured with an 8K ODR so by increasing IMU_GYRO_RATEMAX you are reading the FIFO more often but reading less samples each time. So you are mainly increasing the overhead of context switching. Can you characterize how much the load increases just by increasing IMU_GYRO_RATEMAX and not doing any of the extra UART IO? Unfortunately we don't have a lot of control over the low level implementation of the IO drivers that are in the Qualcomm code. And there is no DMA that could help lower IO overhead. One idea would be to lower the ODR to 1K so that you are only reading one sample from the FIFO at each interrupt.

    • M

      Boson 640 MIPI M0153 16-bit

      Video and Image Sensors
      • • • mkriesel
      3
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      Votes
      3
      Posts
      30
      Views

      M

      @Alex-Kushleyev I only need the RAW output I plan to do all the post processing myself so this is exactly what I need, Thanks!

    • N

      Compatible Stereo Camera and live streaming components - NON GPS

      VOXL 2
      • • • nitinpatil
      2
      0
      Votes
      2
      Posts
      16
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      Eric KatzfeyE

      @nitinpatil Regarding question #3, both ArduPilot and PX4 are supported. Since most of our customers are currently using PX4 we have much more experience with that.

    • Allister LimA

      Batteries keep overheating and ultimately break beyond 45 minutes of being plugged in (non flight)

      Power Modules
      • • • Allister Lim
      2
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      Votes
      2
      Posts
      13
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      Alex KushleyevA

      @Allister-Lim ,

      If you are not monitoring the battery voltage while working with your battery-powered VOXL, it is possible that you are over-discharging the batteries to the point of failure. Especially with LiPo batteries, it is unsafe to over-discharge them, so please be careful. (It seems that you are also using LiPo batteries, in addition to ModalAI Li-Ion batteries also shown (green)). There is nothing wrong with using LiPo batteries, but you have to be more careful with those. Over-discharged batteries lose capacity and Lipo Batteries may become dangerous.

      It is a good idea to use an appropriate DC power supply when working with VOXL2 while it is powered on continuously. 12V 3-5A Power supply, connected to the APM (which will provide 5V for VOXL) should be sufficient. You should have no problem finding one, but in case you need, here is a link to the AC adapter that we sell : https://www.modalai.com/collections/accessories/products/ps-xt60

      Alex

    • M

      VOXL ESC Mini 4-in-1 not detected issue

      VOXL Flight Deck
      • • • mkriesel
      8
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      Votes
      8
      Posts
      464
      Views

      Alex KushleyevA

      @mkriesel , I would suggest doing a UART loop-back test of the ESC connector on your VOXL2 board. You would need to make a connector which connects UART TX and RX on VOXL2 side (ESC disconnected). We have a SW tool for doing a loopback test of DSP UARTs : qrb5165io-slpi-uart-test

      Source code: https://gitlab.com/voxl-public/voxl-sdk/core-libs/libqrb5165-io/-/blob/master/apps/examples/qrb5165io-slpi-uart-test.c

      You can test the ESC UART on J18 and also two additional UARTS (also mapped to the DSP) on J19. If the test fails only on J18 UART, then this may be some HW issue. If none of the UARTS on J18 and J19 pass the loopback test, then issue is probably in SW.

      Please try and we can go from there.

      Alex

    • I

      J8 Sensor Header Use with M0173 Micro-Coax Kit on VOXL2

      Video and Image Sensors
      • • • isaac
      2
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      Votes
      2
      Posts
      22
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      Alex KushleyevA

      Hi @isaac,

      We only have two variants of the kernel for VOXL2. The default (original) kernel and one that supports M0173. (mach. var 1.0.0 and 1.0.1 respectively, which you can see in output of voxl-version).

      If you are using M0135 camera interposer board, you would have to use the first kernel. However, this kernel is set up for a stereo setup in J8, so J8U is not available for regular cameras. If you are using J6 and J7 for cameras, then using M0135 in J8 to enable J8U, is not really possible, even with a kernel modification (due to some shared reset lines that will affect several cameras, if enabled). I would need to know exactly what cameras are connected where in order to provide more details.

      Now, if you use the second kernel in combination with M0173, you can also use other adapters such as M0181, M0172. Enabling a hi-res camera in J8U has been discussed in the following thread, with images and instructions : https://forum.modalai.com/topic/4757/connecting-2-boson-cameras-and-2-mipi-cameras-4-cameras-total . Please note that you can use the smaller boards such as M0181 and M0172 instead of M0173 with the second kernel.

      I would strongly suggest going the second route, but if you have an issue with this, let me know. I don't have the full understanding based on your brief question.

      Alex

    • G

      Failed to start voxl-camera-server / voxl-mapper

      Ask your questions right here!
      • • • greg_s
      1
      0
      Votes
      1
      Posts
      11
      Views

      No one has replied

    • wilkinsafW

      CICD SDK

      VOXL SDK
      • • • wilkinsaf
      3
      0
      Votes
      3
      Posts
      31
      Views

      wilkinsafW

      @tom Thank you @tom

    • M

      Help needed: what connector is used between the Modal AI PX4 battery and supplied charger?

      Power Modules
      • • • mamuncanada
      3
      0
      Votes
      3
      Posts
      34
      Views

      M

      @tom Thank you very much for your information.

    • Andrew TridgellA

      ArduPilot on Voxl2

      Flight Core v2
      • • • Andrew Tridgell
      45
      1
      Votes
      45
      Posts
      5469
      Views

      Eric KatzfeyE

      @adiprin1 Can you please start a new forum topic for this? And please include information about the device that you are looking to attach? Thanks!

    • P

      Starling 2 Phillips/hex screw sizes

      Starling & Starling 2
      • • • pettertei
      1
      0
      Votes
      1
      Posts
      24
      Views

      No one has replied

    • K

      VOXL2-Mini (QRB5165): YOLO on NPU/NNAPI or GPU keeps falling back to CPU. Looking for a known-good export/runtime path (or QNN/HTP).

      Video and Image Sensors
      • • • kjwindham
      1
      0
      Votes
      1
      Posts
      40
      Views

      No one has replied

    • Aaron PorterA

      NTP versus Systemd-timesyncd on the VOXL2

      VOXL 2
      • • • Aaron Porter
      1
      0
      Votes
      1
      Posts
      15
      Views

      No one has replied