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 Heelgrasper
22 Feb 2012, 17:20
Forum: Scanners and Build Threads
Topic: Sola Technical's $70 acrylic scanning platform on Ponoko
Replies: 31
Views: 18709

Re: Sola Technical's $70 acrylic scanning platform on Ponoko

The page in focus is a must. Barrel distortion you live with or perhaps deal with in postprocessing. But you will still have to live with having to move the camera quite close if it's a small book and you want it to fill out the picture. I just tried real quick and it looks like a distance of roughl...
by Heelgrasper
22 Feb 2012, 01:58
Forum: Agora / The Marketplace
Topic: DIY Book Scanne near Houston?
Replies: 9
Views: 143327

Re: DIY Book Scanne near Houston?

Hello Everyone, I have a decent question? I have found 2 great ideas for portable book scanners. One is from Ion call the Book Saver and the other is called the Book Liberator. Both of these models just vanished right before they were supposed to be released. Are these just A-Holes teasing us with ...
by Heelgrasper
22 Feb 2012, 01:04
Forum: Scanners and Build Threads
Topic: A DIY Book Scanner In Every Hackerspace /DIY Kit
Replies: 399
Views: 344686

Re: A DIY Book Scanner In Every Hackerspace /DIY Kit

Have to say, I love those assembly instructions to. Great work. My plans are to modify the design a bit since I have books to scan that are a bit to big for this design and I actually think the instructions will be helpful for that too when I have to figure out where to make the modifications. Now I...
by Heelgrasper
21 Feb 2012, 19:58
Forum: Cameras and Electronics
Topic: Minimum Camera for Book Scanning
Replies: 84
Views: 111050

Re: Minimum Camera for Book Scanning

One subject that needs to be dealt with is the minimum focus distance (MFD from now) when you zoom. I haven't thought of it as a problem until yesterday but it seems be a growing problem. My old Canon PowerShot A540 in macro mode have a MDF of 5 cm (2 inches) when not zoomed (W) and 30 cm (12 inches...
by Heelgrasper
21 Feb 2012, 18:01
Forum: Scanners and Build Threads
Topic: Sola Technical's $70 acrylic scanning platform on Ponoko
Replies: 31
Views: 18709

Re: Sola Technical's $70 acrylic scanning platform on Ponoko

So, I haven't been able to find exactly what the focus distance is, and I don't see it on the page you linked. It's at the table at the bottom of the page: Minimum Focusing Distance iAuto (W: Approx. 5cm to Infinity T: Approx. 100cm to Infinity) The 100 cm seems to be a bit much in my eyes but of c...
by Heelgrasper
21 Feb 2012, 15:48
Forum: OCR/Optical Character Recognition
Topic: ocr+google books
Replies: 4
Views: 6235

Re: ocr+google books

Before somone corrects me I better do it myself: It's not only used in fraktur typefaces but went out of use in latin typefaces around 1800. Latin typefaces were so rarely used here before 1800 (only for latin texts and I don't read much latin) that I didn't know that before actually reading the Wik...
by Heelgrasper
21 Feb 2012, 15:32
Forum: Chat
Topic: The missing scanner kit instruction booklet
Replies: 4
Views: 7577

Re: The missing scanner kit instruction booklet

Ikea is always good for a joke:

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by Heelgrasper
21 Feb 2012, 13:27
Forum: OCR/Optical Character Recognition
Topic: ocr+google books
Replies: 4
Views: 6235

Re: ocr+google books

In the early 19th century f was used instead of s, in some instances, leading to interesting reading for today's reader, the word 'such' being the most obvious example of unintended confusion. Before the hacking caused some deleting I had a post here, even though it's an old thread. I'll just repos...
by Heelgrasper
21 Feb 2012, 13:15
Forum: Scanners and Build Threads
Topic: Sola Technical's $70 acrylic scanning platform on Ponoko
Replies: 31
Views: 18709

Re: Sola Technical's $70 acrylic scanning platform on Ponoko

Before the hacking I had made a post here about the problem might being the distance from camera to platen. I based that on the fact that a Sony DSC-W570 has a minimum focusing distance of only 5 cm when zoom isn’t used (wide) but 1 meter with the zoom maxed (tele) as seen here: http://www.digitalre...
by Heelgrasper
21 Feb 2012, 12:43
Forum: Introductions and connections
Topic: Post something about yourself here (The Hello Thread)
Replies: 437
Views: 385308

Re: Post something about yourself here (The Hello Thread)

Since my original post went lost cause of the hacking I better post something similar again. Hi, my name is Jakob and I’m from Denmark, living in the town of Randers. I’ve been photo copying books since the mid 1990’s and flat bed scanning a little (mainly short articles) since the 2000’s. I have a ...