Raspberry camera angle
Hey Guys,
I have a Raspberry 3+ around and want to mount a cam with Octoprint on the heatbed of my MK3.
The original camera module should fit my needs: I don't need perfect picture quality. It should just be light (and cheap)
While I searched for the module, I figured that there are a lot of different versions from different suppliers. It looks like these cams come with different view angles.
Since the cam will not be far away from the printed object, I assume that a very wide view angle would be better.
My knowledge concerning cams is very limited.
Can you help me out? What should I be looking for when I buy one?
Thanks a lot
Michael
Re: Raspberry camera angle
for our purposes they're all mostly the same with the exception of the extra features that you already mentioned.
fisheye lens, ir filter, adjustable focus, etc. I don't know how a true fisheye lens would look at that distance but this one looks pretty neat: https://www.amazon.com/Raspberry-160%C2%B0Fisheye-Camera-Longruner-Adjustable-Focus/dp/B074S5LG4H/
my biggest problem was that those ribbon cables are awful and you have problems running them more than a foot or two. I've since moved on to usb webcams and given up on bed-mounting because of the vibration and limited fov
Re: Raspberry camera angle
The newer 8MP rpi cam I think has a different optical field of view than the older 5MP. But all the cheap "rip off" 5MP have the same lens. Quality is not great but good enough for this purpose. In any case you can change the fov (plus a lot of other settings) via software, depending on which software package you install.
I personally wouldn't use the cam via Octoprint.
Re: Raspberry camera angle
Personnaly i use a 150° lens.
No issues when using pi camera module with 2b 3b or 3b+
Re: Raspberry camera angle
Thanks a lot guys.
I think I'll start with a cheap ripoff Raspi cam to get some experience. Not much money lost if it was the wrong setup.
About the fisheye-lens:
When I mount the camera on one corner of the heatbed, it just needs to see 90°. Since it will be some cm away from the heatbed, even less than 90° should be sufficient.
I'd assume that the printed object looks rather small on the video if you use a fisheye lense.
But maybe I'm wrong about that.
Could you post a picture? That would be interesting 🙂