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

  164
  Topics
  762
  Posts

  R

  Hi there,

  Ive recently purchased the starling 2 max. I purchased the drone with the standard "dual 4k and dual tracking (c28)" option. We realise that we need the TOF sensor to achieve what we want out of the drone, I have purchased the TOF sensor separately and have installed it onto the board.

  This is the sensor that I purchased: https://www.modalai.com/products/m0178?variant=48528287793456
  (sensor with adapter PCB and M0177 starling flex (Molex40 pin))

  Im confused about how we are meant install the sensor onto the drone, I can see in some images online that the TOF sensor is installed with a seperate mount compared to the one that the drone came with, as seen on this forum post:

  https://forum.modalai.com/topic/4571/starling-2-max-tof-depth-data-not-publishing/7?_=1757657087117

  I cant seem to find this mount for sale anywhere, I also cant find any CAD models of the starling 2 max with this mount available.

  Any help on where I can source this sensor mount or get a CAD model of it, would be really helpful.

  Thanks,
  Rishi.

• 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
  579
  Posts

  K

  @tom thank you for your assistance. I'll do that.

• 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