Hi devs
Is it normal for the ToF to detect phantom obstacles?
Might it be caused by certain types of lighting and/or environment?
Im encountering this phenomenon at specific spots (both indoors and outdoors) where it detects an obstacle in front of it when obviously theres is nothing there and PX4's collision prevention kicks in and does not allow it to move forward.
Any advice?
Hi ModalAi folks
Any idea when will the ToFv2 be added to the online store?
Thanks
@Alex-Kushleyev I'll glue it back in place myself. Thanks!
Yes the lenses is clear and unscratched.
I just tried gently rotating the lens and it does rotate!
I have not tried rotating the rest of the OV7251 cam lens in case i end up inadvertently damaging them.
Regarding your point about flying out the window -
I have flown these aircrafts outdoors before and even with motion, for as long as the features are far away, the quality metric is bad.
However, i noticed that the quality metric shown here remains extremely good even though the features are more than 100m away:
https://forum.modalai.com/post/11882
Two key difference here though:
-OV9782 is used (higher resolution)
-Sharper images (you can see that the entire frame is sharp vs the regular OV7251 where the corner/edges are always soft (pillars in the opposite bldg)
Should the OV7251 (even the regular, working ones) be better focused?
Supplementary post to elaborate what i mean when i said that the VIO works well indoors but Qual drops instantly when the features are far away. The images arent exactly sharp:
These two below are captured from a custom drone that is known to fly reasonably well in feature rich indoor environments.
When flying outdoors, even if the scene is feature rich and QVIO is actively tracking 20+ features, the quality drops drastically (to -1) if they are far away like more than 200m away. I have at least 10 identically built so far and they exhibit similar behaviors indoors/outdoors.
The Murata box is placed at around 20cm and 60cm respectively:
I wont consider the lens to be sharp as you can hardly make out the words "murata" at 60cm. Got me thinking if the poor outdoor performance is due to the lenses being poorly focused.
Then, these two below however are taken from a brand new builds:
This im quite sure has got something wrong with the lens/focus isnt it?
I dont think the lens can be adjusted in the first place.
Is the OV7251 fisheye tracking cam supposed to be somewhat out of focus rather than being very sharp?
Did anyone manage to send AT commands to the EM9291?
Doesnt seem to be possible as no virutal serial ports ttyUSB* were created.
While it is possible to use qmicli --nas-xxxx functions to set and query information, it is no where near the flexibility offered by AT commands.
For instance, i may wish to lock preferred network to LTE instead of 5G/LTE to prevent it from switching back and forth.
@wilkinsaf Flying correctly for the most part yes.
Except during specific maneuvers as i have described in my first post (details in the github link) and the third post.
Its challenging to summarize the issue in a few lines..
@wilkinsaf actually no, I'm using neither GPS nor mag (disabled both) as my flights are entirely indoors