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
12 Sep 2017, 17:50
Forum: Cameras and Electronics
Topic: Using STICK to install CHDK on 2 cards for Canon A810. How to make one card for the left camera and one for the right?
Replies: 5
Views: 3284

Re: Using STICK to install CHDK on 2 cards for Canon A810. How to make one card for the left camera and one for the righ

Your A810 cameras have a good chance of working. The difference is that I have A2500 and ELPH 160 cameras on hand and have tested them. So I am much more confident that they will work and I can more easily reproduce and fix any issue that does arise. In addition, I have crafted images that are known...
by duerig
09 Sep 2017, 12:27
Forum: Programs, Software releases, and more.
Topic: Any way to convert book scans into PDF with vector text?
Replies: 6
Views: 5847

Re: Any way to convert book scans into PDF with vector text?

I should add that there are a number of open source pixel-image-to-vector conversion tools around. I tried a number of them and was impressed by neither the compression nor the quality. It is possible that one or more of them has made advances since then, and you can do a search on Github or general...
by duerig
09 Sep 2017, 12:24
Forum: Cameras and Electronics
Topic: Using STICK to install CHDK on 2 cards for Canon A810. How to make one card for the left camera and one for the right?
Replies: 5
Views: 3284

Re: Using STICK to install CHDK on 2 cards for Canon A810. How to make one card for the left camera and one for the righ

The distinction between left/right (even/odd) was kept on the SD card of the camera when using Spreads. In this case, after using STICK to install, you will want to create a text file on the SD card. The file is called 'OWN.TXT' and contains just the word 'even' or just the word 'odd'. It should exi...
by duerig
08 Sep 2017, 11:25
Forum: HELP
Topic: Does anyone have a cad file for Archivist book scanner?
Replies: 4
Views: 4762

Re: Does anyone have a cad file for Archivist book scanner?

smartechs, click on the individual part descriptions. You will want to read about the purpose and details of each part in any case because that will help you make the part and fix any problems that may arise during assembly. At the bottom of the part page are links to PDFs and/or DXFs which include ...
by duerig
04 Sep 2017, 18:46
Forum: Programs, Software releases, and more.
Topic: Pi Scan 1.5: DSLR and Mirrorless Camera Support
Replies: 3
Views: 4908

Pi Scan 1.5: DSLR and Mirrorless Camera Support

I've just released Pi Scan 1.5 on github: https://github.com/Tenrec-Builders/pi-scan The big new feature is that it supports the gphoto2 library now, and so any camera that is compatible with gphoto2 can now be used with Pi Scan. See the supported cameras here: http://www.gphoto.org/proj/libgphoto2/...
by duerig
23 Aug 2017, 13:06
Forum: Show and Tell / Book Projects
Topic: Going to the Maker Faire
Replies: 5
Views: 5389

Re: Going to the Maker Faire

Last time I did something like this, I set up a monitor that displayed the designs photo gallery. If you want to set up something similar, let me know and I can help. Also, don't get discouraged if there is no obvious effect after the initial interest. You will be planting a seed of an idea that may...
by duerig
22 Aug 2017, 11:59
Forum: Programs, Software releases, and more.
Topic: PI Scan Network Connection
Replies: 1
Views: 3749

Re: PI Scan Network Connection

Hi. I'm the guy in the video. So here is some general advice: If you have a dedicated Windows PC, then you might want to try using TwoCamControl to directly control the cameras with the PC and download the images onto a folder in the PC itself without using Pi Scan as an intermediary. If this works ...
by duerig
17 Aug 2017, 12:41
Forum: Scanners and Build Threads
Topic: Which one is better? Platen's angle 100 or 90 degree?
Replies: 30
Views: 6879

Re: Which one is better? Platen's angle 100 or 90 degree?

@dpc, I want to understand you better. So let's simplify the situation somewhat. Suppose we have a V-shaped 90-degree platen. Neither side is masked by black cloth. Let's just worry about a single light and a single camera. For this example, I don't care about the distance of the light. So let us su...
by duerig
15 Aug 2017, 23:34
Forum: Cameras and Electronics
Topic: How to get desired dpi?
Replies: 6
Views: 3246

Re: How to get desired dpi?

Every camera sets the DPI field to a default value on each image regardless of 'actual' DPI. To get the DPI, take a photo of a ruler. Then calculate the number of pixels it is to get one inch on the ruler. You can change DPI by moving the camera towards or away from the page you are photographing or...
by duerig
15 Aug 2017, 16:17
Forum: Scanners and Build Threads
Topic: Which one is better? Platen's angle 100 or 90 degree?
Replies: 30
Views: 6879

Re: Which one is better? Platen's angle 100 or 90 degree?

I'm not certain what jck57's goals are here. I know that for myself, a lot of expense and time when building Archivist Quill kits goes into handling the 100 degree platen angle. We custom grind the glass to a nonstandard miter. Many of the aluminum beams are custom cut to 50 or 40 degree angles. We ...