There is a new module under development that allows you to pipe VGA (640x480) video from the hires camera at 30fps via MPA so that it can be streamed with voxl-streamer using RTSP while simultaneously saving 4k HD video at 30fps encoded as h265 into a file, preferably on the SD card on voxl. This module is now available in beta and will be officially released in upcoming releases of the voxl SDK for voxl, rb5-flight, and voxl 2. The beta package is available using wget https://storage.googleapis.com/modalai_public/modal_packages/archive/voxl-hires-server_0.0.1.ipk. It is meant for use on voxl only and is compatible with voxl platform release 3-3-0-0.5.0-a. In order to use it with voxl-camera-server, reconfigure voxl-camera-server to not use the hires camera. For example, call voxl-configure-cameras and choose option 1 Tracking + Stereo to allow voxl-camera-server to access the tracking and stereo cameras but not the hires camera. Then you can use voxl-hires-server for the hires camera. Use voxl-hires-server -h to see the available options. More documentation will be available upon official release of this new package.

@JoeC Seems like it is an SD card issue. I was able to recreate the problem when using a SanDisk Extreme 32GB card. But when using a SanDisk Ultra 16GB card everything works fine.

@PawelJ Bear with us. Our subject matter experts are out on summer vacation this week.

There are a few steps you can take to bring up a new USB camera. First of all, the camera must be UVC compliant. The best thing to do is to test it out on a Linux PC first and verify that it works there. Some tips: 1. Use the 'lsusb' command before and after you plug the camera in to see if it is showing up. 2. If you see the device with 'lsusb', look in /dev to see if it shows up as a /dev/videox device. So, do 'ls /dev/video*' before plugging in the camera and after plugging in the camera to see if it appears. 3. If everything looks good you should be able to stream from it using voxl-streamer.

Voxl uses systemd for startup. You create a "service" file to implement your desired startup action and place it in the /etc/systemd/system directory. There are lots of guides and documentation on the Internet about how to create systemd service files. You can also look at the service files already on Voxl for some examples.

An update to UVC camera support has been started. It will increase number of supported cameras by allowing MJPEG and will increase number of supported viewers including latest QGroundControl versions. Target availability is mid-December.

No, you shouldn't need anything special to see it with 'lsusb'. If you run 'dmesg -wH' and then plug in the camera do you see any messages printed? Another thing you can try is to free up the adb port by using ssh over wifi instead of adb. Then plug the camera into the adb port and see if you see it with 'lsusb'. It's possible you are seeing a power issue and the adb USB port can deal with more power.

@stevet Yes, that is the case. But it may not be possible without full access to the complete system image build. And it is also possible that there are dependencies on Qualcomm provided libraries that are only available as 32 bit binaries.

@wilkinsaf The configuration file for voxl-streamer is documented here: https://docs.modalai.com/voxl-streamer/#configuration-file-format

@wilkinsaf The configuration for voxl-camera-server is discussed here: https://docs.modalai.com/voxl-camera-server/#configuration

@Philemon-Benner No problem. But that's exactly why the decimator is there. It's often nicer to see lower frame rate with higher image quality.

@Jagatpreet-Singh-Nir I don't think any of us have tried attaching peripherals to the USB C port. We'll have to take a look and see what is going on. Do you see any messages in dmesg when you attach the camera?

@PIRON-PI I have only worked with the python code.

@Philemon-Benner When you say resolution goes down are you referring to image quality or the actual width x height resolution? If you are talking about image quality that makes sense because the video encoder is working toward a target output bit rate. If you have more frames in one second then it has to decrease quality in order to meet the target output bit rate.

@張為超 voxl-emulator is a docker image that emulates the environment https://docs.modalai.com/voxl-emulator/.

@PIRON-PI You can get release binaries, for example: https://github.com/mavlink/MAVSDK/releases/download/v0.43.0/mavsdk_server_linux-arm64-musl

@Jagatpreet-Singh-Nir What camera are you trying to use? Some cameras have a large power requirement that cannot be satisfied by the port (i.e. the cameras are not USB spec compliant).

@joshuagaus Even with our new upcoming module we will not support PPM. It looks like there may be some other communication options on that receiver so you may want to review all the possibilities.

@joshuagaus Currently only the Spektrum receivers are supported. However, we have a small add-on module that will soon be available for sale that will open up more RC options including SBUS. Can you point us to the specific receiver that you are interested in using?

Yet another version is now available with wget https://storage.googleapis.com/modalai_public/modal_packages/archive/voxl-hires-server_0.0.3.ipk. This has a couple of new command line configuration options to select video capture / jpeg snapshot resolution and video capture frame rate.