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.

@kitkatSG Yes, we have enabled most resolutions in that sensor now and are preparing a release to address this issue.

@Kessie Excellent, glad to hear you got it working! And thanks for adding the details on what you had to do to the posting!

@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.

@Morten-Nissov 1MHz is a supported clock rate for i2c on the DSP based on what I can see in the code. But we have never tried running a device at 1MHz on i2c so it's tough to say why it wouldn't be working for you.

@ceu-gomez PX4 on VOXL2 is composed of two separate applications. One is on the applications processor (running Ubuntu) and the other is on the DSP (running Qurt RTOS). They use the muorb module to communicate topic data back and forth. The spare i2c on J19 is mapped to the DSP, not the applications processor, so Ubuntu has no access to it. To gain access to it on Ubuntu side with PX4 running would require some new code. This is something that is on our development roadmap but no definitive answer on when we will be able to get to it.

@JoeC SDK 1.1.1 is now available. Please use the installer in the voxl2_SDK_1.1.1.tar.gz archive to install this.

@Dan It's not really documented anywhere other than the source code. The best place to look is at the muorb module code. That is what implements the uorb communicator interface to allow advertisements, subscription requests, and topic data to flow between the DSP and the Linux side.

@Hammas-Ali We have not tried either of those streaming protocols. Voxl is a Linux computer so it is likely that you can implement RTMP or DASH. voxl-streamer uses GStreamer so, if there are RTMP or DASH GStreamer elements available, it shouldn't be too hard to incorporate them.

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.

@psafi Unfortunately, the Mavlink module is not available on the DSP side. We tried it in the past and there were a lot of issues so we only have it on the apps side. You are welcome to try to add it into the DSP side and see how it goes.

@roy-crosthwaite Can you swap GPS units with the working one and verify that it fixes the issue?

@psafi I just built voxl-px4 with the lis3mdl driver and when I run it the command fails because it fails the probe (I don't have that magnetometer) but otherwise runs normally.

@psafi And how did you load your updated build to the VOXL 2?

@psafi If you disable the px4 service (systemctl stop voxl-px4) and then start it from the command line (voxl-px4 -d) what output do you get? And if you disconnect the magnetometer from the system how does that change things? Remove the start command from voxl-px4-start and enter it after px4 starts from the command prompt to see what happens.

You can obtain Hexagon SDK 4.1.0.4 for the flight controller build environment described in this document: https://gitlab.com/voxl-public/rb5-flight/rb5-flight-px4-build-docker at the ModalAI developers web site under EULA protected downloads in addition to getting it directly from Qualcomm. https://developer.modalai.com/asset/view/184

@psafi Those should only be there on the Nuttx platform.

@psafi Looks like it will compile if you comment out the #include <debug.h> lines in both lis3mdl_i2c.cpp and lis3mdl_spi.cpp

@Jetson-Nano Here is some (admittedly sparse) documentation: https://docs.modalai.com/voxl-streamer/#running-multiple-instances

@psafi In this case we don't use voxl-mavlink-server directly because we are essentially setting up a "mavlink device" straight into px4.