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
16 Jul 2018, 12:13
Forum: Scanners and Build Threads
Topic: 2xUSB in laptop used for TTC. How to obtain aditional USB for mouse as a trigger
Replies: 1
Views: 107

Re: 2xUSB in laptop used for TTC. How to obtain aditional USB for mouse as a trigger

I'd look for bluetooth input devices. A keyboard, a mouse, or even one of those presentation remotes might work out. Just make sure that your laptop supports bluetooth and that the device you get works with the built-in bluetooth rather than through a USB base antenna.

-Jonathon Duerig
by duerig
26 Jun 2018, 12:33
Forum: HELP
Topic: Need Pi Scan to output .tiff, please advise
Replies: 1
Views: 102

Re: Need Pi Scan to output .tiff, please advise

Pi Scan supports downloading raw images on DSLR and mirrorless cameras. But not on the cheaper point and shoot cameras. As far as I know, there is no way to generate TIFF files directly on any of the cheap point and shoot cameras. At some point this summer (hopefully early in July), I plan to releas...
by duerig
06 Jun 2018, 13:35
Forum: HELP
Topic: Fast, Automated and Simple scan routine for single sheets of papers
Replies: 4
Views: 180

Re: Fast, Automated and Simple scan routine for single sheets of papers

What you need is a document scanner. This is the fastest way to scan large amounts of loose paper. An alternative would be a camera with a copy stand. This might be better if you have lots of different odd sized papers, while I think document scanners tend to work best with standard sized full sheet...
by duerig
05 Jun 2018, 13:29
Forum: Agora / The Marketplace
Topic: WTB: Pre-assembled scanner for comic covers
Replies: 5
Views: 185

Re: WTB: Pre-assembled scanner for comic covers

Agreed that a flatbed scanner might be just what you are looking for. The other alternative which would be faster to actually scan is what is called a 'copy stand'. This is a simple device for holding your camera vertically above a bed looking down for quick scanning of flat documents. There are alm...
by duerig
05 Jun 2018, 01:10
Forum: Agora / The Marketplace
Topic: Wanted: Freelancer to scan books
Replies: 4
Views: 343

Re: Wanted: Freelancer to scan books

Just FYI, the original user requested that their posts in this thread be deleted. So we have honored their request.
by duerig
25 May 2018, 11:21
Forum: HELP
Topic: Simultaneous capture with dual cameras and chdkptp.py?
Replies: 5
Views: 184

Re: Simultaneous capture with dual cameras and chdkptp.py?

Great to see you've got it sorted. There are two reasons why I host a custom CHDK image. First, it lets me automatically set up the configuration (enable the crosshairs overlay to let you see the center of the viewfinder more easily to perfectly align the camera with a mirror, and give permission to...
by duerig
23 May 2018, 12:26
Forum: HELP
Topic: Simultaneous capture with dual cameras and chdkptp.py?
Replies: 5
Views: 184

Re: Simultaneous capture with dual cameras and chdkptp.py?

What you want here is a multi-process or multi-threaded program. This is how Pi Scan (which used chdkptp.py) does the simultaneous triggering. Feel free to take a look at the code here which uses multithreading: https://github.com/Tenrec-Builders/pi-scan The easiest way might be to just use the Pyth...
by duerig
21 May 2018, 23:56
Forum: Cameras and Electronics
Topic: Newbie questions about cameras
Replies: 6
Views: 333

Re: Newbie questions about cameras

I don't have experience with the Panasonic G5. So I can't recommend it (or dis-recommend it). But to answer your questions: (1) I think 'shutterless' and 'electronic shutter' are the same thing. Mirrorless cameras can have either mechanical or electronic shutters. The thing that mirrorless cameras d...
by duerig
10 May 2018, 12:12
Forum: Cameras and Electronics
Topic: Is there an optimal angle of view of the camera?
Replies: 4
Views: 381

Re: Is there an optimal angle of view of the camera?

There are two other constraints here. First, there will be a maximum and minimum distance from the camera which can remain in focus. The camera must be in this range of distance from the page. Second, since the page must be well-lit, the camera needs to be at a sufficient distance away so that it wo...
by duerig
11 Apr 2018, 12:08
Forum: Programs, Software releases, and more.
Topic: Pi Scan 1.5: DSLR and Mirrorless Camera Support
Replies: 3
Views: 904

Re: Pi Scan 1.5: DSLR and Mirrorless Camera Support

I was doing some research and it seems like JPEG actually preserves fine details pretty well. JPEG compression artifacts are much more likely to happen on large areas that are mostly the same color. Having said that, lossless is clearly better for archival purposes either way. Preserving detail 'pre...