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

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by spamsickle
24 Jul 2009, 22:56
Forum: Cameras and Electronics
Topic: To Auto focus, or not to focus, that is the question
Replies: 8
Views: 9687

Re: To Auto focus, or not to focus, that is the question

I'm using CHDK but not SDM. I really haven't done a lot of exploring of the capabilities that makes available, beyond enabling the USB shutter triggering. I found the "Disable LCD Off" option under the Miscellaneous menu, but haven't gotten it to do what I want yet. Reading the documentation on the ...
by spamsickle
24 Jul 2009, 09:27
Forum: Cameras and Electronics
Topic: To Auto focus, or not to focus, that is the question
Replies: 8
Views: 9687

Re: To Auto focus, or not to focus, that is the question

Autofocus and lock is essentially the same as manual focus. You're not depending on the autofocus, you have a fixed setting. I think I'm probably the only person who WOULD have had a focus problem between page 1 and page 1500, because my original scanner did not use a sliding book cradle. The slidin...
by spamsickle
21 Jul 2009, 21:03
Forum: Tutorials/How-To's
Topic: Alternative Software Workflow
Replies: 21
Views: 25502

Re: Alternative Software Workflow

I appreciate the tip on JPEGcrops. I'd been a bit frustrated by "book jitter" when cropping images with ImageMagick. This program conveniently eliminates that issue. I switch to "free" on the aspect ratio, click "synchronize crops" and frame one page. This puts a page-sized frame on each of the page...
by spamsickle
19 Jul 2009, 22:35
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

Re: My camera-on-glass-platen counterweighted G2

So, if I understand correctly, your platen + camera support is actually a framed, floating box that rests on the floor when not in use? Damn, that's cool. Your camera clamp design is totally badass. You understand correctly. While I can lift it with one hand, I'm also sitting on a little stool and ...
by spamsickle
19 Jul 2009, 20:45
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

Re: My camera-on-glass-platen counterweighted G2

Finally, there's the switch I got from Dan to fire the cameras at the same time. I'd originally thought I'd attach the handle to the lower strut, but in playing around with it, that just seemed unwieldy. I simply slipped the switch off the handle, and hold it in my hand as I raise and lower the plat...
by spamsickle
19 Jul 2009, 20:39
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

Re: My camera-on-glass-platen counterweighted G2

With the glass, the frame supporting the glass, the floor-standing double-strut box enclosing the frame, and the mounted cameras, the whole assembly weighs about 16 pounds. I'd originally thought I'd attach the platen to some external mount with more drawer slides, but I realized when I got it built...
by spamsickle
19 Jul 2009, 20:25
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

Re: My camera-on-glass-platen counterweighted G2

I think the other design had the boards at the "top" of the platen oriented at 45 degrees to horizontal, and if I were to try building again, I'd probably try to implement something like that. I was kind of designing as I built, and using angles to join the wood, so all my boxes are box-like. It mig...
by spamsickle
19 Jul 2009, 20:16
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

Re: My camera-on-glass-platen counterweighted G2

I said I beefed up the book cradle, but I didn't really say how.

I joined the two v-shaped boards together with lengths of 2x4, and rested the unit on a couple of drawer sliders.
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CIMG0213BT.JPG (203.26 KiB) Viewed 16138 times
by spamsickle
19 Jul 2009, 20:12
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

Re: My camera-on-glass-platen counterweighted G2

The platen itself is made from picture frame, cut the "wrong way" using the mitre box I bought for this project. I'd never used a mitre box before, but I used it for several aspects of this project. By "wrong way" I just mean the corners are cut to make our platen instead of making a picture frame. ...
by spamsickle
19 Jul 2009, 19:58
Forum: Cameras and Electronics
Topic: My camera-on-glass-platen counterweighted G2
Replies: 16
Views: 21600

My camera-on-glass-platen counterweighted G2

Just finished scanning and converting my first book on my 2nd-generation DIY scanner, and thought I'd pause for a moment to share what I have. I grabbed ideas that people posted, and had a few ideas of my own, and I'm satisfied with how it all came together. Someone who had previously developed a gl...