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 dtic
13 Jun 2010, 09:13
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

Re: auto page turner prototype

Ok, I use slides at the moment. I have two "platen slides towers" on each side of the platen so it can't wobble much. But I'm suspecting that I'd need a motor on each side. If I apply upward force only at the platen part attached to one slide then I get some friction at the other side. I added the e...
by dtic
13 Jun 2010, 08:01
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

Re: auto page turner prototype

update: I'm stuck on moving the platen up/down. Mini servos powered by the Arduino board can't handle that even with counterweighting. Too much friction. I have salvaged some more powerful components from a printer but need to read up/"get adviced up" before proceeding. I made a post in the Arduino ...
by dtic
03 Jun 2010, 07:04
Forum: Introductions and connections
Topic: DIY Book Scanner Anniversary
Replies: 5
Views: 4604

Re: DIY Book Scanner Anniversary

Congrats! :P
by dtic
13 May 2010, 14:47
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

Re: auto page turner prototype

univurshul: thank you! Tim: Right, moving the cradle will at least lessen the "page pile" height problem. I hope that can be enough but it needs testing. There's still need for some way to adjust the finger position given different sized books. Though that's only needed once for each book and can be...
by dtic
09 May 2010, 08:54
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

Re: auto page turner prototype

Klaus, thanks, very helpful feedback! I hadn't thought at all about some of those things. Still, I'll start by just ordering a Arduino kit and some RC servos and see how far that takes me. With the stepping motor as a fallback solution. Here's how I'm thinking: - I realized I can add a platen counte...
by dtic
08 May 2010, 16:55
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

Re: auto page turner prototype

Cool, my hand is on youtube! :) Klaus: Thank you. So this would be a good buy then, right? http://www.arduino.cc/en/Main/ArduinoBoardDuemilanove Yes, the small finger needs almost no force. Searching now I see tiny RC servos for as little as 4$ , like this . I'll get one and test it. Full automation...
by dtic
07 May 2010, 18:09
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

Re: auto page turner prototype

Sure, post away Daniel! :-) I'd be honored to see it there. I hereby stamp a CC by-nc-sa license on it. Brief explanation of some parts: Yes, the "big finger" joint is just electric tape and a piece of plastic tube. The tube slows the downward movement of the finger. Without that it fell down too ha...
by dtic
07 May 2010, 07:32
Forum: Scanners and Build Threads
Topic: auto page turner prototype
Replies: 48
Views: 48278

auto page turner prototype

a.jpg See attached video (zipped .mkv since upload form didn't allow mkv). The "big finger" is a rubber eraser. The "small finger" is a thick drinking straw. To use a double platen you'd need two (properly timed) forces. Reliable finger action is a challenge but the device now performs fine on a 30...
by dtic
23 Apr 2010, 12:51
Forum: Scanners and Build Threads
Topic: super leightweight, super cheap, uncomplicated book scanner
Replies: 15
Views: 21457

Re: super leightweight, super cheap, uncomplicated book scan

Nice! I like the direct computer connection, bypassing the need for memory card and for a separately powered trigger. I'd like to see a video of this in operation though. The platen seems tricky to handle. Some other ideas: Have you thought about adding lockable joints to the now duct taped platen e...
by dtic
20 Apr 2010, 17:37
Forum: Scan Tailor
Topic: Scan Tailor
Replies: 357
Views: 214871

Re: Scan Tailor

I've recently used Scan Tailor on multiple documents with only a few (~10) pages each. Each pack of tiff's outputted is then used to make an OCR'ed djvu file. I speed up the work process by using two instances of Scan Tailor simultaneously, each processing a separate document. Here are some changes ...