Subcategories

• PX4 Autonomy Developer Kit

  Product related questions and answers

  21
  Topics
  139
  Posts

  Q

  Hello everyone,

  We’ve been following this discussion with great interest — especially the insights about the mast kit and the copper shielding solution. We also tried similar approaches on our side and wanted to share our results to contribute to the thread.

  We purchased four Starling 2 Max drones for our project at the beginning of the year, and like others here, we are experiencing difficulties with GPS stability outdoors. To mitigate interference, we designed and 3D-printed our own GPS mount to move the antenna away from the main body, and we added a copper shielding layer around it.

  We then tested the u-blox M10 GPS outside, under clear sky conditions, with the drone powered on (connected via Wi-Fi to use VOXL-Portal). Over about 10 minutes, the best observation we captured showed 18 satellites with an average SNR around 30–35 dB.
  vlcsnap-2025-07-25-14h33m43s700.png
  image474.png

  However, despite these results, we still cannot achieve a stable outdoor localization, which currently prevents us from flying the drones properly outside. At this point, we’re unsure whether the problem comes mainly from the GPS performance or possibly from the barometer.

  We’d really appreciate:

  Being included in your support list for this GPS issue, since it affects multiple units on our side (as mentioned by @Alex-Kushleyev). Any guidance or recommendations on how to debug further (extra shielding, hardware setup, barometer validation, software settings, etc.).

  Thanks a lot to the ModalAI team and to the community for the shared ideas — we hope our feedback helps others as well.

  Best regards,

  Quentin

• Starling & Starling 2

  Questions regarding the Sentinel VOXL 2 Development Drone

  167
  Topics
  771
  Posts

  J

  Hello,

  We are interested in purchasing two Starling 2 Max GPS-denied development drones (specifically MRB-D0012-4-V3-C29-M11-T9-K3), but there were a few things we would like some clarification on before deciding on the purchase:

  In the C29 configuration, where is the ToF sensor mounted? Is it similar to the regular Starling 2? I am assuming so but I did not see an image showing the location or the product page or documentation confirming it.

  With the C29 configuration and the ToF sensor, does this mean that the Starling 2 Max has the same indoor SLAM/navigation capabilities out of the box like the Starling 2 indoor SLAM development drone? The product brief doesn't seem mention this at all. I'm assuming it should after installing voxl-mapper based on how the VOXL2 SDK works, but I figured I'd confirm here.

  Can we purchase the FLIR Lepton thermal sensor integrated with the Starling 2 Max from directly from you? How would this affect lead times? If not, it seems from prior posts this can be something we can easily integrate ourselves later, but I figured I'd ask.

  How many batteries ship with the sku listed above?

  I apologize in advance if these were already answered elsewhere. Thanks for your help!

  James

• Sentinel

  Questions regarding the Sentinel VOXL 2 Development Drone

  91
  Topics
  574
  Posts

  J

  I just disconnected/reconnected the USB to 4-pin JST cable from the microhard carrier board and rebooted the vehicle. Now the wlan0 interface has been up the entire time the vehicle's on, but none of the other devices on the vLAN the wifi adapter is connected to can ping the vehicle over wifi.

  Output from dmesg looks the same except the following output after the microhard interface is found:

  [ 26.460342] usb 1-1.2: new high-speed USB device number 4 using xhci-hcd [ 26.550901] usb 1-1.2: New USB device found, idVendor=1f94, idProduct=3002, bcdDevice= 4.14 [ 26.550915] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 26.550922] usb 1-1.2: Product: pMDDL2450AES256 [ 26.550929] usb 1-1.2: Manufacturer: Microhard [ 26.550935] usb 1-1.2: SerialNumber: 1592348 [ 26.639101] rndis_host 1-1.2:1.0 usb0: register 'rndis_host' at usb-xhci-hcd.0.auto-1.2, RNDIS device, 16:4f:08:e4:e1:09 [ 26.643401] cdc_acm 1-1.2:1.2: ttyACM0: USB ACM device [ 33.765387] vdd_tof: disabling [ 33.765393] vdd_hap_boost: disabling [ 37.240138] hrtimer: interrupt took 112083 ns [ 101.412343] boot log copy done [ 114.937520] qcom_rpmh DRV:apps_rsc TCS Busy, retrying RPMH message send: addr=0x41b08 [ 233.747906] perf: interrupt took too long (2778 > 2500), lowering kernel.perf_event_max_sample_rate to 72000 [ 339.990578] perf: interrupt took too long (3473 > 3472), lowering kernel.perf_event_max_sample_rate to 57500 [ 386.060248] perf: interrupt took too long (4425 > 4341), lowering kernel.perf_event_max_sample_rate to 45000
• VOXL m500 Reference Drone
  109
  Topics
  580
  Posts

  W

  If anyone has run into this again,

  ensure you update your /etc/modalai/voxl-tag-detector.conf to the tracking camera pipe you would like to do the april tag detection on.

  the "tracking" has gotten update to "tracking_down" or "tracking_front"

• Qualcomm Flight RB5 5G Drone

  Discussion regarding Qualcomm Flight RB5 5G Drone

  132
  Topics
  681
  Posts

  T

  @Huynh-Gremsy You cannot connect peripherals to the USBC port in that way, you'll have to use one of our add-on boards that breakout USB ports

• Seeker

  Questions regarding the Seeker SLAM Development Drone

  41
  Topics
  141
  Posts

  A

  @Cody , please double check the actual and desired roll / pitch / yaw values in the flight review. When the vehicle is level, then roll and pitch should be close to zero and desired roll/pitch will be zero as well if you don't touch RC sticks.

  If the attitude estimate is incorrect (for whatever reason) this can cause the vehicle to not be level during flight / take-off.

  Alex