Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

Another 80/20 Build

Built a scanner? Started to build a scanner? Record your progress here. Doesn't need to be a whole scanner - triggers and other parts are fine. Commercial scanners are fine too.
russca
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Re: Another 80/20 Build

Post by russca » 03 Dec 2010, 18:52

railman wrote:The slides are THK SSR20 20mm rails, these bearings are like a tank.
Theres no play at all in them . I had to reinforce the frame of the platen to stop the racking but now it is solid.
If anyone needs any more pictures or cad drawing please let me know. All the deminsions should be in the cad files posted.
How easy those slides to use? Can you move the platen with a gentle push/pull or it requires some effort?

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railman
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Re: Another 80/20 Build

Post by railman » 03 Dec 2010, 19:22

The platen weight is about 2.5lbs, but I plan on adding some type of counter weight and a stepper motor to drive the platen up and down. I am also thinking of adding a touch sensor for the up and down, trigger switch. The stepper motors and the arduino just came in the mail a couple of days ago and are waiting for me to have some time off. Hopefully this weekend I'll get some time to play. I'll update this weekend with pictures and file if possible.

russca
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Re: Another 80/20 Build

Post by russca » 03 Dec 2010, 20:04

railman wrote:The platen weight is about 2.5lbs, but I plan on adding some type of counter weight and a stepper motor to drive the platen up and down. I am also thinking of adding a touch sensor for the up and down, trigger switch. The stepper motors and the arduino just came in the mail a couple of days ago and are waiting for me to have some time off. Hopefully this weekend I'll get some time to play. I'll update this weekend with pictures and file if possible.
I was thinking along the same lines. Turning this scanner into semi automatic one would make things easier. It would be nice to use something like Slick Stick actuator from SMI for that purpose.



For automatic triggering there should be 1-2 sec delay. I like the use of a small-diameter stick going along the angle of the cradle for triggering. Look at this video. I am not sure what is the purpose of it in their setup.


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railman
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Re: Another 80/20 Build

Post by railman » 03 Dec 2010, 21:22

Wow, I want one of those robotic scanners. I think I'll just have to build my own someday. I see that Daniel is working with some led s, maybe some of his ideas will come in handy on my build. The lighting is not that bad but could use some more power maybe, a little brighter .

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railman
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Re: Another 80/20 Build

Post by railman » 03 Dec 2010, 21:32

check these babies out 50w led 4000lm

here are the specs:
Lens Color: Water Clear

Emitted Color : White

DC Forward Voltage (VF): 30~35Vdc

DC Forward Current (IF): 1500mA

Viewing Angle: 140 Degree

Color Temperature: 6000~7000K

Intensity Luminous (Iv): 3500~4000LM

http://cgi.ebay.com/50W-White-High-Powe ... 19c165671f

I think that four of these and I could start a fire. They are not cheap at $40 + shipping each.

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Re: Another 80/20 Build

Post by bea » 12 Feb 2012, 19:05

Wow. Just ran in to this recently. Very nice build. I looked at the AutoQuoter Bill of Materials PDF. Are these all of the materials needed, excluding the plexiglass, cameras, lights, and MDF, to build your 80/20 scanner? I don't know the first thing about CAD or this material, so, I would try to build it through trial and error from your pictures.
Bea

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