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 rkomar
19 Jun 2015, 18:01
Forum: Cameras and Electronics
Topic: Speed of full cycle from taking one image to taking the next
Replies: 8
Views: 5145

Re: Speed of full cycle from taking one image to taking the

My cheapo Canon A4000 cameras also take about 7 seconds to store a RAW image (24MB). I wouldn't trust the reported Class on all SD cards. I've had cheap ($8 for 8GB) "Class 10" cards that were abysmally slow.
by rkomar
27 Apr 2015, 16:36
Forum: Lighting
Topic: How to get white background?
Replies: 1
Views: 5537

Re: How to get white background?

You need to select the correct "white balance" setting on the camera that matches the light source. Try one of the fluorescent light settings.
by rkomar
19 Mar 2015, 22:28
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 47728

Re: Best non-DIY book scanners

That's good to know. Thanks for that. Do you mind my asking if you scan books on your Plustek, and if so, how many books you have scanned with it over 6 years? It's hard to say exactly, but it's probably something like 350 books. I did most at the beginning when I was scanning my old textbooks, pap...
by rkomar
19 Mar 2015, 15:54
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 47728

Re: Best non-DIY book scanners

My Plustek scanner is working for about 6 years now. Perhaps most of the complaints on the web are due to the light not working, but I wouldn't take that to mean that most people who bought one had the light burn out quickly. That's just probably the most common way for the scanner to fail.
by rkomar
11 Mar 2015, 12:42
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 47728

Re: Best non-DIY book scanners

My model has a gap of about 7 or 8 mm from the edge of the scanner. If the binding is stiff, you have to press hard to get the gap that small. The more expensive models are advertized as having a smaller gap by a few millimeters. The majority of the books I've scanned (reference and textbooks) have ...
by rkomar
10 Mar 2015, 14:09
Forum: Scanners and Build Threads
Topic: Best non-DIY book scanners
Replies: 44
Views: 47728

Re: Best non-DIY book scanners

I have a Plustek Opticbook 3600 scanner (one of the cheaper models), and it does a reasonably good job. If you place the scanner at the edge of a table, so that the page not being scanned can hang straight down, then the book only has to open to 90 degrees, or so. There are two problems with it: 1) ...
by rkomar
29 Jan 2015, 22:06
Forum: Scanners and Build Threads
Topic: A new scanner design using plastic tubing
Replies: 224
Views: 145294

Re: A new scanner design using plastic tubing

I have a platen whose angle is much greater than 90 degrees (it looks like about 120 degrees). One thing I've noticed is that books don't naturally center themselves as easily along the apex as they would with a sharper angle. So, I wouldn't recommend going too wide on the angle.
by rkomar
22 Jan 2015, 14:44
Forum: Cameras and Electronics
Topic: Avoid blurry corners
Replies: 7
Views: 4483

Re: Avoid blurry corners

If you're using CHDK, and have the camera fixed at some distance from the page, then you can take some pictures at slightly different focal lengths, and see which gives the best result over the whole page. Then use that good focal length for all of the rest of the shots rather than let the camera re...
by rkomar
21 Dec 2014, 03:47
Forum: Scanners and Build Threads
Topic: I built "Auto page flip Scanner"
Replies: 8
Views: 10174

Re: I built "Auto page flip Scanner"

I agree that that is very cool and well thought out. I have my doubts that it would work on a book that just wants to stay closed, but the solution to that would have to be far more complicated, I think (besides just spending some time breaking the book so that it stays open).
by rkomar
04 Dec 2014, 18:20
Forum: "Destructive" Scanning
Topic: So long suckers! I'm scanning the easy way...
Replies: 7
Views: 11617

Re: So long suckers! I'm scanning the easy way...

LOL! I have a Plustek OpticBook scanner that I bought quite a while ago. With it, I learned how much work it was producing an ebook after scanning. It's for that reason that I'm dragging my feet on actually finishing a camera-based scanner. I know that the fun part is getting it working, and the dre...