Hi @Bilal-Hussain
I also encourage you to review our Hardware Expansion Guide.
https://docs.modalai.com/expansion-design-guide/#usb-expansion-over-j3--j5
In there you'll see how we achieve most of our expansion is by USB. So, depending on how much current your target device needs, we can power it directly, or if you need more than the posted VBUS ICC limits for the various plug-in boards, then you can just plan on providing an external power source as well.
Once you further refine your modem/radio of choice, please keep those in mind. It may make your final integration steps much easier to know this info.
Hope this helps!!
Qisda Forum
Customer Qisda Private Support List
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RE: Operational range of the VOXL 2 mini
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RE: Operational range of the VOXL 2 mini
@Bilal-Hussain We aren't familiar with either of those products but a quick scan of the product literature makes me skeptical that they are compatible with each other.
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RE: collision prevention problem
@rogerli Also, a PX4 flight log would be helpful. But the SDLOG_PROFILE parameter needs to first be set such that vision and avoidance topics are included. Make sure that parameter is set correctly and then provide a log of a flight where you see a problem along with the voxl-logger output with all of the saved camera frames then that can help us debug what is going on.
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RE: collision prevention problem
Hey, happy to try and help!
Unfortunately a lot of what you're describing sounds like typical camera behavior. We've also struggled with lighting conditions in the past and don't have a great fix. What I'd recommend more than anything is using
voxl-logger
to collect some logs of what you're seeing through the camera stream. This should enable you to look at the output and see if you notice anything funky and share the logs with us so we can do the same.Sorry this isn't the greatest of responses, hope this at least helps some. If you can gather some logs of the behavior you're seeing I'd be happy to take a look at them.
Thanks,
Thomas -
RE: TFLite multiple model execution
Will try to help you out as best as I can here!
Yes, you're on the right track with running them as independent services with systemctl. You'll likely notice that they do all read from the same conf file and so what I'd recommend here is modifying the source code to point to a different config file location for each. I can help you find the section of relevant code if needed. This will give you different services with different configuration files. You've also correctly guessed here that you'll need all to publish to different output pipes so that they aren't overwriting each other.
Hope this helps!
Thomas
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RE: Re-projection error reported by calibrateCamera, but Calibration Succeded!
There will always be some reprojection error when computing a homography, as long as the error is below 0.5 (which it looks like yours is) you should be totally fine.
Let me know if you have any other questions!
Thomas
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RE: Calibrating Extrinsics and DFS
Hey Taylor, happy to try and help!
On calibrating we try to keep the reprojection error as low as possible. You're getting an error of 1.42 which is almost triple what we'd like at worst. I'd recommend trying to recalibrate in different lighting conditions with as flat of a checkerboard as you can make. Even small imperfections here can lead to bad calibration.
Hope this helps!
Thomas
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RE: Need help simulating .tflite yolo models on my linux machine.
Only the inference time should be affected by your choice of hardware. The other two should be the same regardless of your choice.
Thomas
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RE: Operational range of the VOXL 2 mini
Hi @Bilal-Hussain
You are certainly veering away from the intended use cases and design goals of VOXL 2 Mini, and instead we'd recommend you look at VOXL 2 so you can use add-on boards such as Eric mentioned like Microhard or a 4G/5G solution.
Modem performance with various base stations is operator/carrier dependent and nothing we can control nor provide metrics on. VOXL 2 can interface with many modems, so I think you might want to first do some modem analysis to see what modem solution will work for your intended use case and constraints.
From there we can help you determine which platform (VOXL 2 or VOXL 2 Mini) can work with your modem and carrier network of choice.