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
Today, 12:26
Forum: Cameras and Electronics
Topic: Can Canon A2500 capture in grayscale
Replies: 1
Views: 4

Re: Can Canon A2500 capture in grayscale

Sorry for not responding sooner on the other thread. When I was developing Pi Scan, there seemed to be no benefit to grayscale mode on the cameras. The images were not appreciably smaller and the delay on capture was not any quicker. So I decided not to include it. So I'd recommend changing to grays...
by duerig
24 Oct 2019, 23:58
Forum: Cameras and Electronics
Topic: Pi-Scan 1.5 with A2500 Cameras
Replies: 2
Views: 691

Re: Pi-Scan 1.5 with A2500 Cameras

It looks like you are not actually running CHDK on the cameras. The 'Found gphoto cameras' is a bad sign. It means that it thinks your cameras are higher end gphoto cameras rather than CHDK cameras. So here is how you verify that your cameras are running CHDK. When you first turn on the camera, look...
by duerig
23 Oct 2019, 10:15
Forum: Scanners and Build Threads
Topic: Are DIY Book Scanners better than commercial scanners?
Replies: 2
Views: 569

Re: Are DIY Book Scanners better than commercial scanners?

Overall, the quality of a DIY Book Scanner is going to be higher than the flatbed scanners (near the gutters). Away from the gutters, the sensors of flatbed scanners will likely yield better results. But you will always have distorted or cut off text near the gutter since the page curves. DIY scanne...
by duerig
03 Sep 2019, 15:55
Forum: Programs, Software releases, and more.
Topic: PiScan with Raspberry Pi 4?
Replies: 2
Views: 422

Re: PiScan with Raspberry Pi 4?

Pi Scan does not yet support the Pi 4. I have purchased one and hope to be able to update Pi Scan to work with it soon, but I don't have a timeline for that right now. If you are planning on buying a Pi just to be a scanner, I would say just to get a Pi 3 since I don't expect the changes to the Pi 4...
by duerig
29 May 2019, 17:13
Forum: Introductions and connections
Topic: Hello and can I get a DXF file and parts list
Replies: 2
Views: 471

Re: Hello and can I get a DXF file and parts list

I'd recommend that you read through the entire set of documents on the Archivist scanner here: http://diybookscanner.org/archivist/ This includes links to all the design files and descriptions of all the parts necessary. The DXF design files themselves are linked from there as well. Just go to the b...
by duerig
14 May 2019, 14:15
Forum: Programs, Software releases, and more.
Topic: Pi Scan speed?
Replies: 2
Views: 797

Re: Pi Scan speed?

You should expect about 4 seconds per cycle which is roughly the same speed at which you can safely turn the page when you are in a rhythm. However, the exact speed will depend on the external storage (thumb drive in the case of the video), the quality of the camera (higher end cameras produce large...
by duerig
22 Mar 2019, 09:38
Forum: Lighting
Topic: Using SORAA Snap System Beam Spreader - Uneven Lighting
Replies: 18
Views: 2228

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: 2228

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: 2228

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: 351477

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,...