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    gauravshukla914

    @gauravshukla914

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    Best posts made by gauravshukla914

    • RE: Can I use RadioLink AT10 for RC

      Hi @Tejas-Shah . Yes you can. We are using AT10 right now for ouru work.

      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: VOXL Flight will not flash image

      @scottesicdrone
      The problem is because fastboot command needs root to run properly or else it wont detect device in bootloader.

      refer this for more info about running it without root.
      https://docs.modalai.com/setup-adb/

      or simply run install.sh script as root.

      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: VOXL flight deck + toF Positioning

      Thank you so much for this. This was of great help @Chad-Sweet

      posted in Ask your questions right here!
      G
      gauravshukla914

    Latest posts made by gauravshukla914

    • RE: "Avionics power low: 4.78 V" battery.

      @modaltb Hi. I have submitted my response to the firm that was sent to me. Looking forward for the replacement. Do let me know if there's anything else I need to do from my end. Thank you again.

      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: "Avionics power low: 4.78 V" battery.

      hi @modaltb Sure. Thank you. That works with us. Could you let me know the return process, or what do we need to do it from our end?

      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: "Avionics power low: 4.78 V" battery.

      Hi @modaltb Thanks for your reply.
      Yes, we are using the VOXL power module.

      Yes, after measuring the pin1 of J1, we are getting output as 4.78V DC instead of 5V.

      The voltage that we reported as 4.78V, was the voltage coming out of the power module.

      We even tested with different batteries like 3S mentioned above and 4S, but its still the same.
      In QGC, we did change our parameters from 4S to 3S to suit our requirements.
      Just to let you know, we have been working with this exact same setup for over a month now, and successfully did our flying tests, but this is the first time that this issue has come up.

      posted in Ask your questions right here!
      G
      gauravshukla914
    • "Avionics power low: 4.78 V" battery.

      Hi, We are observing a strange behavior wrt to our Lipo battery, while flying our voxl flight deck enabled drone. We are using a Lipo 3s 2200 MaH battery. Our battery is fully charged. However, while testing, we hear this from Qgroundcontrol station "

      • Avionics power low: 4.78 V".
        And as a result the drone goes into uncontrollable state and hits the ceiling.
        While our debugging, we observed that the voltage on pin1 of J1 connector, we are getting voltage of 4.8V DV instead of 5V which is required.
        Please let us know what could be a problem here and how can we proceed from here. Looking forward to your reply.
      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: VOXL Power

      Thank you for the information. It was a great help. We are using Lumenier BLHeli_32 32bit 50A 4-in-1 ESC 2-6s w/ BEC 2A/5v, DSHOT / Proshot ESC

      posted in Ask your questions right here!
      G
      gauravshukla914
    • VOXL Power

      Hi. We are observing a strange thing wrt to power on VOXL. When we connect our ESC's on the J1007 connector on the VOXL, the VOXL boards powers on, even though there is no power connection being made on the "J1013 - 5V DC Power Input". Is this a problem?

      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: Air frame options

      @Chad-Sweet said in Air frame options:

      QAV

      Thank you for your reply. What arm length and motors did you guys go for?
      For the arm length, I see 5,6,7 inches options.

      posted in Ask your questions right here!
      G
      gauravshukla914
    • Air frame options

      Hi. We wanted to know what are the different compatible air frames for VOXL Flight Deck.We are currently using S500 air frame. However we are looking at other options too, which are more compact. Could you recommend anything?

      posted in Ask your questions right here!
      G
      gauravshukla914
    • RE: Cannot change TOF framerate

      any updates regarding this issue?

      posted in Ask your questions right here!
      G
      gauravshukla914
    • Cannot change TOF framerate

      Hello,
      I am working with TOF and problem is I am not able to change the framerate. Even after passing the value for the argument frame_rate it does not seems to have any affect on the performance.

      yocto:/# roslaunch voxl_hal3_tof_cam_ros tof.launch frame_rate:=5
      ... logging to /home/root/.ros/log/1e64ae08-1dd2-11b2-b299-ec5c68cd1745/roslaunch-apq8096-8701.log
      Checking log directory for disk usage. This may take awhile.
      Press Ctrl-C to interrupt
      Done checking log file disk usage. Usage is <1GB.
      
      started roslaunch server http://10.42.0.157:32875/
      
      SUMMARY
      ========
      
      PARAMETERS
       * /rosdistro: indigo
       * /rosversion: 1.11.21
       * /tof/voxl_hal3_tof_cam_ros_node/auto_exposure: 0
       * /tof/voxl_hal3_tof_cam_ros_node/camera_id: 1
       * /tof/voxl_hal3_tof_cam_ros_node/exposure_time: 800
       * /tof/voxl_hal3_tof_cam_ros_node/flip_image: True
       * /tof/voxl_hal3_tof_cam_ros_node/frame_rate: 5
       * /tof/voxl_hal3_tof_cam_ros_node/ir_image_mode: False
       * /tof/voxl_hal3_tof_cam_ros_node/laser_scan_line: 86
       * /tof/voxl_hal3_tof_cam_ros_node/publish_depth_image: True
       * /tof/voxl_hal3_tof_cam_ros_node/publish_ir_image: True
       * /tof/voxl_hal3_tof_cam_ros_node/publish_laser_scan: True
       * /tof/voxl_hal3_tof_cam_ros_node/publish_point_cloud: True
       * /tof/voxl_hal3_tof_cam_ros_node/scan_width_degrees: 96
      
      NODES
        /tof/
          voxl_hal3_tof_cam_ros_node (voxl_hal3_tof_cam_ros/voxl_hal3_tof_cam_ros_node)
        /
          base_link_laser_scan (tf2_ros/static_transform_publisher)
          base_link_tof_cam (tf2_ros/static_transform_publisher)
      
      ROS_MASTER_URI=http://localhost:11311/
      
      core service [/rosout] found
      process[base_link_tof_cam-1]: started with pid [8723]
      process[base_link_laser_scan-2]: started with pid [8724]
      process[tof/voxl_hal3_tof_cam_ros_node-3]: started with pid [8733]
      
      	DEPTH_IMAGE
      	IR: 1 ..... Cloud: 1 ..... Laser: 1
      Camera id: 1
      Image width: 224
      Image height: 1557
      Number of frames to dump: 0
      Camera mode: preview
      SUCCESS: Camera module opened
      Camera Id: 0 .. Available raw sizes:
       raw size: 4208x3120
      Camera Id: 1 .. Available raw sizes:
       raw size: 224x1557 (TOF?)
      Camera Id: 2 .. Available raw sizes:
       raw size: 640x480
      SUCCESS: TOF interface created!
      =========== modalai  Royale3.31, Spectre4.7 CameraDevice::activateUseCase() : return SUCCESS!!
      =========== modalai  Royale3.31, Spectre4.7 CameraDevice::activateUseCase() : return SUCCESS!!
      Libcamera sending RAW16 TOF data. App calling the PMD libs to postprocess the RAW16 data
      [ INFO] [1613747443.833934348]: Loading lens parameters from /data/misc/camera/irs10x0c_lens.cal.
      [ INFO] [1613747443.836526236]: 
      cx/cy     114.822 89.022
      fx/fy     111.394 111.394
      tan coeff -0.00222965 -0.00368372
      rad coeff -0.261745 0.098178 -0.0166875
      
      
      
      
      
      Camera HAL3 ToF camera app is now running
      
      
      Frame: 0 SensorTimestamp = 	 1007492959341
      Frame: 30 SensorTimestamp = 	 1008492961341
      Frame: 60 SensorTimestamp = 	 1009492982341
      Frame: 90 SensorTimestamp = 	 1010492981341
      Frame: 120 SensorTimestamp = 	 1011492984341
      Frame: 150 SensorTimestamp = 	 1012493005341
      Frame: 180 SensorTimestamp = 	 1013493045341
      Frame: 210 SensorTimestamp = 	 1014493011341
      

      It seems that the frame_rate is hardcoded in hello_hal3_camera.h static const uint8_t FrameRate = 30;

      was it supposed to be hard-coded? if yes than how can I try different configuration as mention in the TOF data sheet

      Rate: 5 - 45FPS in configurable option modes for distance / accuracy / framerate
      Exposure Time: 4.8 ms typ. @ 45 fps / 30 ms typ. @ 5 fps
      Range :4 - 6m
      Depth Resolution: <= 1% of distance (0.5 – 4m @ 5fps) <= 2% of distance (0.1 – 1m @ 45fps) 
      

      Here are the results for different FPS. They all look the same. Seems to have no effect of framerate argument

      1FPS
      1fps.png

      5FPS
      5fps.png

      30FPS
      30fps.png

      45FPS
      45fps.png

      Thanks

      posted in Ask your questions right here!
      G
      gauravshukla914