@Vinny Thank you for your support.

Regarding the power module: I did not modify it. I received it exactly in this condition. I have not opened or altered the module.

I have tried all the recommended steps including powering with the module off -> then ON -> then inserting USB-C, as well as using different laptops, different USB cables, and different ports on both Windows and Ubuntu, but the issue still remains the same.

@kabumei
Hello, my name is Naoki, I am keen on this project, could you send me a detail to major.gits501@gmail.com?

@Aaky , 5A hover / 12A max (per motor) should be easy for M0129 in terms of current capacity. Just make sure you have some cooling. Sufficient cooling should be determined by testing and monitoring ESC temps, which are available in the ESC telemetry and PX4.

Alex

@taiwohazeez , the image is indeed blurry. Did the camera come like this or did something happen to the camera / lens?

Also, i am assuming that the blur is not coming from the camera moving around (that is to say the camera is stationary during those image captures).

Please inspect the lens on the outside to make sure it's not scratched or damaged, as this can also contribute to the issue.

In any case, adjusting focus on a camera is usually as simple as turning the lens slightly CW or CCW. Since the image is almost focus, i expect that the adjustment would be within 1 full turn from the existing lens position in the lens holder. If the camera lens is being held by a plastic mount, it should have a screw on the side of the plastic mount, which clamps the mount around the lens. The screw needs to be loosened and then you can use the focus tool to turn the lens slightly while looking at the image view in voxl-portal. For this particular camera with a wide lens, the hyperfocal distance will be around 10cm, meaning that when properly focused, everything beyond 10cm away should appear in focus. With this in mind, you should some target (checkerboard is fine) 0.3 - 0.5m away and turn the lens back and forth (with the plastic tool) to try achieve the best focus. If you cannot achieve good focus (the best focus is still blurry), it probably means that either the lens is damaged dirty (front or back side of the lens).

If you do unscrew the lens all the way out (by turning counter-clockwise until the lens comes out), don't leave the camera exposed like this for a long period of time, so that dust does not get on the camera sensor.

Also, what is the exposure and gain reported in the stats below the image in the voxl-portal view, when you view the camera stream (without the calibration). The environment seems pretty dark, i would recommend more lighting, but let's double check the reported exposure and gain (from auto exposure). Also, please make sure your checkerboard pattern is as flat as possible (this is unrelated to blurry image, but will result in better calibration results).

Please try focusing the camera and let me know if you have any questions.

Alex

@cbay ,

The minimal components for testing M0166 camera with VOXL2 are:

M0155 adapter coax camera cable (should come with the camera)

To run the solo configuration, you would need to do the following in software:

copy correct ar0144 sensormodule driver to /usr/lib/camera/ create (or copy/paste) a voxl-camera-server.conf file for that camera to /etc/modalai. The config can be copied for many of our standard configs. as an example, you could run voxl-configure-cameras 26 to use our standard C26 config (see here : https://docs.modalai.com/voxl2-coax-camera-bundles/) and then just disable / remove (in the generated config file) the cameras that are not actually present.

For testing 1-3 M0166 cameras,

option 1: 1-3 M0155 (unsync'ed), plugged into VOXL2 J6, J7, J8 option 2: 1 M0173 (synchronized or unsynchronized), M0173 plugs into VOXL2 J6, J7.

Please take a look at this post, you will find some useful information about customization : https://forum.modalai.com/topic/4491/ar0144-rgb-output-on-voxl2 (even though your question is not related to a color version of M0166).

If you are using VOXL2 mini, you can still use two M0155. If you wanted 2-3 sync'ed cameras, you need to use either M0188 or M0195 (both of which are for VOXL2 mini only, just like M0173 is for VOXL2 only).

There are lots of options.. depending on the path you take, we can help you get the software set up.

Alex

@saegsali What platform are you running? If you arm and get the drone in the air does the ov_overlay appear? This change was made to reduce CPU load on the ground, it can likely be turned off in /etc/modalai/voxl-open-vins-server.conf

@Seungjae-Baek
image.png IMG_0429.jpg
One more question: Should we use 5G antenna, not LTE? As I know when we buy the 5g modem the default antenna is the one with LTE.

@Capstone-0 Our drone crashed and we ditched our project but has ModalAI added support for AT commands for the 5G (I assume EM9291) modem yet? If not, I figured out how to do it and posted instructions here

https://forum.modalai.com/post/19131

Once you get those commands, you can set up a service to query the modem for its signal strength and pump the output somewhere. Someone else in that forum discusses it a bit.

@jmltt SDK testing for Sentinel ended at SDK 1.4.0

That doesn't mean that newer releases won't work, it just means we don't put it through the SW QA testing cycles that we do with our newer platforms.

You likely won't see any major performance improvements on Sentinel with newer SDK releases but there may be some nice quality of life additions such as helper scripts, voxl-portal updates and others.

If you have any questions about any specific packages feel free to ask.

Hi @Seungjae-Baek,

It is hard to see the detail in the screenshot, it is very low resolution. Can you please clarify which cameras you are turning on / off?

Also, what streams are consumed from the camera server (by other processes) and what are the resolutions?

Also, keep in mind that your cpu may not run at a high frequency. Please check voxl-inspect-cpu for more details. If your cpu governor is in auto mode, it will reduce cpu core frequency, which will result in higher % usage of each core (at lower frequency).

If you sent your cpu to performance mode (voxl-set-cpu-mode perf), this will push the frequency of all cores to the maximum and will give you a better estimate of the cpu usage per process (out of the full core capacity). Please note that in performance mode, the cpu will consume more power (and heat up a bit more) to perform the same tasks (with lower latency).

Alex