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 duerig
22 Mar 2019, 09:38
Forum: Lighting
Topic: Using SORAA Snap System Beam Spreader - Uneven Lighting
Replies: 18
Views: 623

Re: Using SORAA Snap System Beam Spreader - Uneven Lighting

The secondary reflection from the other side is only completely absent at 180 degrees (flat platen). As you decrease the platen angle more and more, the secondary reflection will slowly spread from the gutter side and eventually if you had a 0 degree angle (completely parallel), you would see a comp...
by duerig
14 Mar 2019, 20:47
Forum: Lighting
Topic: Using SORAA Snap System Beam Spreader - Uneven Lighting
Replies: 18
Views: 623

Re: Using SORAA Snap System Beam Spreader - Uneven Lighting

Get power adapters right away. Taking cameras off mounts to change batteries is really terrible. I had to do that on my first setup and I still get nightmares. :)
by duerig
14 Mar 2019, 20:45
Forum: Lighting
Topic: Using SORAA Snap System Beam Spreader - Uneven Lighting
Replies: 18
Views: 623

Re: Using SORAA Snap System Beam Spreader - Uneven Lighting

konos92a, your scanner is looks really good. I get mad scientist vibes off of it in the best possible way. Just to be clear, though, looking at the image metadata generated by the camera won't give you an accurate idea of what the DPI is. That is a piece of metadata which every camera adds but which...
by duerig
03 Nov 2018, 19:00
Forum: Scanners and Build Threads
Topic: A DIY Book Scanner In Every Hackerspace /DIY Kit
Replies: 399
Views: 334244

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

Hi. Just FYI, the Archivist bookscanner was a successor design to the one this thread is about. If you want to make an Archivist book scanner, head to: http://diybookscanner.org/archivist In the discussion on glass there, it mentions several options including grinding the panes to a 50 degree miter,...
by duerig
01 Nov 2018, 11:09
Forum: Programs, Software releases, and more.
Topic: TTC : I/O error in case of zoom step
Replies: 3
Views: 12852

Re: TTC : I/O error in case of zoom step

Looks like you are finding a few issues in TwoCamControl. Maybe you will have better luck getting support by submitting tickets on the github page? The author of the tool asked for bug reports to be submitted there.
by duerig
01 Nov 2018, 11:07
Forum: Programs, Software releases, and more.
Topic: Canon A2500 - setting apertue in TTC ? Is this posible ?
Replies: 2
Views: 4452

Re: Canon A2500 - setting apertue in TTC ? Is this posible ?

Canon's cheaper point and shoot cameras (like the A2500) do not have an independent aperture setting. The aperture range listed in the spec is how the aperture changes as they automatically adjust based on zoom level. DSLR and mirrorless cameras will give you sharper images regardless and since you ...
by duerig
08 Oct 2018, 11:55
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 36684

Re: Introducing spreads: command-line workflow tool

PocketLibrarian, I'm the author of Pi Scan so I'm happy to work with you to debug your issue. You can PM me or start a new thread (this is not the right place for it). Other than that, I'd say that TwoCamControl is a great controller system. And Using a USB trigger like Konos93a describes is also a ...
by duerig
05 Oct 2018, 12:04
Forum: Cameras and Electronics
Topic: Raspberry PI camera?
Replies: 19
Views: 103771

Re: Raspberry PI camera?

I have played around with this. There are a few limitation of Raspberry Pi cameras. The 8 MP resoloution, the complete lack of zoom, and the fact that a single Raspberry Pi can only handle one camera at a time. But they are cheap. They have manually-set focus control. And they are relatively more re...
by duerig
05 Oct 2018, 11:55
Forum: HELP
Topic: ideal compact budget system for viewing only?
Replies: 2
Views: 3776

Re: ideal compact budget system for viewing only?

There are two possibilities that you might want to look into. First, you might just want to buy a large tablet computer whether an iPad or an Android/Microsoft one. For $300 you can probably get a last-generation refurbished or used model. Then you can use it as a large screen with an attached camer...
by duerig
05 Oct 2018, 11:48
Forum: Programs, Software releases, and more.
Topic: Introducing spreads: command-line workflow tool
Replies: 80
Views: 36684

Re: Introducing spreads: command-line workflow tool

As far as I am aware, Spreads is no longer maintained. It is a neat project that I hope gets reborn some day if Johannes gets more time to work on it. In the mean time, you might take a look at TwoCamControl (a similar project for windows) and Pi Scan (a similar project meant for running on a Raspbe...