@modaltb yes I already set this parameter as you show me.

If stereo vision camera has problem or uncalibrated, is it possible to make this error?

@modaltb thanks for your reply.
I have a VOXL flight deck and I didn’t change camera installation on it.

When I stopped updating system software then my VOXL has been brick.

Ok I’ll prepare debug board to treat fast boot.

Thanks buddy

Hi guys,
My VOXL has been brick.

But I don't have debug module.

Is there any method to unbrick without debug module?

especially, I have PDDL module and checked it has emergency switch to enter factory mode.

Can I recover my VOXL in emergency mode?

Thanks,

Hi guys,

I'm on testing Collision prevention as like below link

https://docs.modalai.com/voxl-vision-px4-collision-prevention/

Also, I already verified VIO data and position mode but, as you can see below picture, I got a message Avoidance / collision prevention error.

because of this error, I cannot arm my flight in pre-check.

Could you please let me know why collision prevention error is occured in pre-check and how to revolve it?

Thanks,

Hi,

I'm on testing VOXL flight deck with S500 frame.
I just verified high resolution camera in front of deck using voxl-streamer. I think it's based on RTSP protocol, so it has too long delay to broadcast streaming data.

I just wanna stream video data not to broadcast multiple user but transfer peer to peer with very low latency.

Could you please let me know how to approach this solution?

Thanks,

Hi,

I'm on testing VOXL flight deck. I tried to calibrate IMU using configured voxl-configure-sanv command, but it failed because of SN.

could you please let me know how to sucess IMU calibaration?

Thanks,

yocto:/# voxl-configure-snav

Which camera configuration are you using?
0 None
1 Tracking + Stereo
2 Tracking Only
3 Hires + Stereo + Tracking (default)
4 Hires + Tracking
5 TOF + Tracking
6 Hires + TOF + Tracking
7 TOF + Stereo + Tracking
8 Hires Only
9 TOF Only

3
attempting to use camera configuration 3
adding override_cam_id value=1 to /etc/snav/camera.downward.xml
adding override_cam_id value=2 to /etc/snav/camera.stereo.xml
Writing new configuration to /etc/modalai/voxl-camera-server.conf:
{
"version": 0.2,
"port_J2": {
"name": "hires",
"enabled": true,
"type": "hires",
"api": "hal3",
"rotation": 180,
"frame_rate": 30,
"override_id": -1,
"auto_exposure_mode": "isp",
"preview": {
"enabled": true,
"width": 640,
"height": 480,
"format": "nv21"
},
"video": {
"enabled": false,
"width": 1024,
"height": 768,
"format": "h264"
},
"snapshot": {
"enabled": false,
"width": 1024,
"height": 768,
"format": "jpg"
}
},
"port_J3": {
"name": "stereo",
"enabled": true,
"type": "stereo",
"api": "hal3",
"rotation": 0,
"frame_rate": 30,
"override_id": -1,
"auto_exposure_mode": "mvcpa",
"mv_cpa_filter_size": 2,
"mv_cpa_exposure_cost": 0.75,
"mv_cpa_gain_cost": 0.25,
"mv_cpa_en_histogram": true,
"preview": {
"enabled": true,
"width": 1280,
"height": 480,
"format": "nv21"
}
},
"port_J4": {
"name": "tracking",
"enabled": true,
"type": "tracking",
"api": "hal3",
"rotation": 0,
"frame_rate": 30,
"override_id": -1,
"auto_exposure_mode": "mvcpa",
"manual_gain": 1000,
"mv_cpa_filter_size": 2,
"mv_cpa_exposure_cost": 0.75,
"mv_cpa_gain_cost": 0.25,
"mv_cpa_en_histogram": true,
"preview": {
"enabled": true,
"width": 640,
"height": 480,
"format": "raw8"
}
}
}

Which physical configuration is this for?

1. 200_quad_2S_pack 4) voxlcam_upside_down_tracking_cam
2. 230_quad_3S_pack 5) voxl_230_3s_quad_secondary_imu
3. voxlcam_upright_tracking_cam
   #? 4
   reloading systemd services
   stopping imu_app

the next step is static IMU calibration
Make sure the quadcopter or VOXL-CAM is flat/upright (roll/pitch=0)
be patient, this will take 20-30 seconds
PRESS ENTER to start static IMU calibration

Starting SNAV: Warning: snav_dronecontroller.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Done
FastRPC call to update data failed

Detected likely failure in SN. Ensure it is running and attempt calibration call again.