Which camera(s) are best from this link?

[Shai Schechter]

Not sure if people have tried these cameras, but what are your opinions on the Raspberry Pi 3 Cam, HBV-1517 or other ones found on this link? https://hbvcamhuibervision.aliexpress.com/store/3018090/search/1.html?spm=2114.12010615/itm2home-2.8148362.8.190846faNnJalk&origin=n&SortType=price_asc

If you would buy one, which one(s) would you recommend to try out? Why?

[Shai Schechter]

Please also specify which are good for upward and which are good for downward and why. Curious to learn as we build our first OpenPNP machine!

[Marek T.]

Some with focus adjustable lens. Also more practical solution if the lens can be replaced to other angle size if needed.

Max 1Mpx for downlooking is enough if you plan to use it only for fiducials not also for some boards documentation.
Max 1Mpx for bottom camera if you plan only small smd align (let's say up to some 15x15mm). If you plan very small and much bigger parts - better take 2-3Mpx.

Remember that no sense to play with too large resolutions looking on bandwidth limitations. If it finally will be delivered to Openpnp through USB...
No sense to play with to high fps as well, because of limitations and Opnpnp anyway uses "only" max to near 15fps (ignores all above if you deliver it).

[Shai Schechter]

Thanks for the feedback! So I take it that downward facing cam is only for fiducials with openpnp? Or are there other uses? If only fiducials, then would an endoscope work since they are cheap? or is raspberry pi cam better?

[Jason von Nieda]

It's also used for strip feeder vision, drag feeder vision, loose part feeder vision, and general positioning. Endo cameras are universally trash and not recommended. They are cheap, but almost everyone who uses one ends up replacing it.

As always, I highly recommend the ELP cameras as shown here: https://github.com/openpnp/openpnp/wiki/FAQ#what-should-i-build

They are well tested, well supported and there are lots of people using them, so it's easy to get help.

Jason

On Wed, Jul 4, 2018 at 9:58 AM Shai Schechter <shai...@gmail.com> wrote:

Thanks for the feedback! So I take it that downward facing cam is only for fiducials with openpnp? Or are there other uses? If only fiducials, then would an endoscope work since they are cheap? or is raspberry pi cam better?

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[Marek T.]

Endoscope cameras have usual lack of focus adjustment. I'm one of those who had it and replaced into ELP as Jason advise you.

What's more and important - Jason is using ELP so you will be always best updated to the changes :-)

[Shai Schechter]

Thanks for the feedback! What about raspberry pi for downward OR upward facing? Do they work well for either case? I couldn’t find many examples of people using them, but I ask because they are super cheap on aliexpress for about $5

[Jason von Nieda]

The Raspberry Pi cameras use similar camera modules to the ELP cameras, so the quality is similar, but then you need a Raspberry Pi to interface to it, along with some way to get OpenPnP to talk to the Raspberry Pi and get images from it.

I think someone did this at one point, but I can't remember the details. If you search this you may find something.

Jason

On Tue, Jul 10, 2018 at 1:33 PM Shai Schechter <shai...@gmail.com> wrote:

Thanks for the feedback! What about raspberry pi for downward OR upward facing? Do they work well for either case? I couldn’t find many examples of people using them, but I ask because they are super cheap on aliexpress for about $5

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[Paul Jones]

I’m using one for upward facing, it works really well. You just have to adjust the lens to move the focus point close to the camera. I’ve posted the setup details before, have a look in the archives.

 

Paul.

 

From: ope...@googlegroups.com <ope...@googlegroups.com> On Behalf Of Jason von Nieda
Sent: Wednesday, 11 July 2018 4:44 AM
To: ope...@googlegroups.com
Subject: Re: [OpenPnP] Re: Which camera(s) are best from this link?

 

The Raspberry Pi cameras use similar camera modules to the ELP cameras, so the quality is similar, but then you need a Raspberry Pi to interface to it, along with some way to get OpenPnP to talk to the Raspberry Pi and get images from it.

 

I think someone did this at one point, but I can't remember the details. If you search this you may find something.

 

Jason

 

 

On Tue, Jul 10, 2018 at 1:33 PM Shai Schechter <shai...@gmail.com> wrote:

Thanks for the feedback! What about raspberry pi for downward OR upward facing? Do they work well for either case? I couldn’t find many examples of people using them, but I ask because they are super cheap on aliexpress for about $5

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[Balázs buglyó]

Paul i searched your post but it seems your github link is broken. About the raspicam And openpnp. I want to USE it too. Can you help with it?

[Mike Menci]

Is there any future in Open PnP with - vison = https://groups.google.com/forum/#!topic/openpnp/fMdmdIuhPQ0 

On Tuesday, 10 July 2018 20:44:19 UTC+2, Jason von Nieda wrote:

The Raspberry Pi cameras use similar camera modules to the ELP cameras, so the quality is similar, but then you need a Raspberry Pi to interface to it, along with some way to get OpenPnP to talk to the Raspberry Pi and get images from it.

I think someone did this at one point, but I can't remember the details. If you search this you may find something.

Jason

On Tue, Jul 10, 2018 at 1:33 PM Shai Schechter <shai...@gmail.com> wrote:

Thanks for the feedback! What about raspberry pi for downward OR upward facing? Do they work well for either case? I couldn’t find many examples of people using them, but I ask because they are super cheap on aliexpress for about $5

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[Michael G.]

Just got a newsletter from ELP. they have a global shutter camera now for about 40$: https://www.aliexpress.com/item/33049942946.html I have not tested them, but maybe it's an improvement to the currently used rolling shutter cameras? it looks like the pcb mounts are the same as the common ELP cameras from the past - could be a drop in replacement then... Just wanted to let you know these cameras exist as I guess other global shutter cameras are much more expensive.

Am Mittwoch, 4. Juli 2018 17:01:39 UTC+2 schrieb Jason von Nieda:

It's also used for strip feeder vision, drag feeder vision, loose part feeder vision, and general positioning. Endo cameras are universally trash and not recommended. They are cheap, but almost everyone who uses one ends up replacing it.

As always, I highly recommend the ELP cameras as shown here: https://github.com/openpnp/openpnp/wiki/FAQ#what-should-i-build

They are well tested, well supported and there are lots of people using them, so it's easy to get help.

Jason

On Wed, Jul 4, 2018 at 9:58 AM Shai Schechter <shai...@gmail.com> wrote:

Thanks for the feedback! So I take it that downward facing cam is only for fiducials with openpnp? Or are there other uses? If only fiducials, then would an endoscope work since they are cheap? or is raspberry pi cam better?

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[bert shivaan]

That is really tempting just for the fun of it.

The lens sizes are focal length - correct?

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[Jason von Nieda]

Looks like they have some monochrome versions of it too. I think I will try one of those: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20190726064035&SearchText=elp+monochrome+global+shutter&switch_new_app=y

Jason

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[bert shivaan]

How does this look?

https://www.aliexpress.com/item/32983581897.html?spm=a2g0o.productlist.0.0.7d936476s66AIu&algo_pvid=d47efcad-5be9-4d8f-86ce-948c17ca4eef&algo_expid=d47efcad-5be9-4d8f-86ce-948c17ca4eef-2&btsid=a0349ee8-c77b-42b3-ad6f-2b883dfab4d4&ws_ab_test=searchweb0_0%2Csearchweb201602_2%2Csearchweb201603_53

I think I like the 120fps idea for only ~$10 more

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[bert shivaan]

I am not sure about the "auto focus" feature. Maybe that will hurt us?

[Jason von Nieda]

I believe that is similar to a camera Mark Harris had troubles with. Be aware that since it only supports 120 FPS modes, you probably won't be able to use it on the same USB host port as another camera. So you'll need two USB host ports for two cameras.

Jason

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[bert shivaan]

Well 2 host ports I have. But thanks for the heads up, about Mark having issues. I will leave well enough alone. :)

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