Webcam no signal
Trying to set up webcams on by minions and for the life of me I cannot get any image to show.
I have used combinations of Pi Zero 2W, Pi 4B, Pi camera v3, OV5647. All get the same result - "No Signal on black screen.
Fresh installs of RatOS & Crowsnest V4 is installed. Tried ustreamer, camera-streamer, the lot.
To me it looks like the webcam service is all ok, just no actual image.
Any help here would be greatly appreciated before I lose all my hair...
Images and log attached.
13 Replies
your log appears to simply indicate that there are no usable devices over and over
1. what camera are you trying to use?
I see a reference to OV5647. Is this the only camera you're trying to use?
2. please provide the output of:
*
ls -l /dev/video*
* ls -l /dev/v4l/*
* libcamera-hello --list-camerasHi Jamin, thanks for your time.
This instance is using a Pi Zero 2w with Raspberry Pi camera module 3.
(My other printers have the OV5647 camera on the Zero 2W)
This is the last section of the log which shows the camera being detected.
In the above log it appears that you're using
ustreamer, since you're using a pi camera can you try using camera-streamer?
also your configured resolution doesn't match what your camera indicates it supports. The camera is listing:
* 1536x864
* 2304x1296
* 4608x2592
But your configuration is indicating:
* 640x480Thanks Jamin, I tried all 3 resolutions in ustreamer and camera streamer but no luck. However, update below:
I can't actually believe this but it is working... after months of back and forward to fix this.
I did the manual uninstall and reinstall of crowsnest V4 as per the instructions here (https://os.ratrig.com/blog/crowsnest-v4-breaking-changes-manual-upgrade/)
Crowsnest v4 contains breaking changes and requires manual steps to...
Crowsnest just recently made huge changes to the way it works. This is great news, because it should be much faster and more reliable. Unfortunately, it also means that there are major breaking changes, and you'll need to do some manual steps to upgrade. When you update to V4 through the machine tab in mainsail, crowsnest will stop working until...
And what do ya know, it works. I'm still a little perplexed by this since i had fresh installs of RatOS this week and the crowsnest version showed as V4 already, hence why I didn't do the manual upgrade. I did it as a last resort and man I am happy about that!
Thanks for your time and help @Jamin Collins [VC 3.1 400mm] I appreciate it!
Now to go test the OV5647 on the Pi Zero 2W... fingers crossed
Sometimes a good kick is all that's needed
@miklschmidt an issue here that he needed to remove and reinstall crowsnest
Oh I was tempted... haha
Testing OV5647 now
I am perplexed... the OV5647 cameras are working now too!
They would not work until i did the manual remove and install of crowsnest. Even though the version was the same before and after.
Hopefully this helps someone in the future with the same issues.
Resolution: Manually remove & install crowsnest via the link above. (whether you have the latest version or not)
I may have spoke too soon... The last printer to sort was the one running the Pi 4B and guess what... no webcam. Looked at the logs and found that i have installed the 64bit system somehow, which I believe is the only difference to my Zero 2W's. I will re-install the 32-bit in hopes to fix the last printer. But otherwise I have 4 operating with webcams now.
If it's on a super old RatOS install that is expected (there was a blog post about this over a year ago)
Ah. Well in this case i think it's the wrong analysis.
Unless there's a new version of crowsnest that requires a recompilation of camera-streamer, this doesn't actually do anything.
lemme check
nope
hasn't changed for 6 months
RatOS hasn't been available in 64-bit for a year
(because it's full of odd quirks and bugs)