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

Search found 87 matches

by rkomar
30 May 2013, 17:39
Forum: Cameras and Electronics
Topic: Questions on Building a simple paperback scanner
Replies: 13
Views: 9367

Re: Questions on Building a simple paperback scanner

So step one is to create a dummy rig with acrylic or glass over the page then photograph it at different distances to see which gives the lowest distortion? Thanks John That's what I would do. It will probably also show you if you're going to have problems with the camera being reflected in the gla...
by rkomar
30 May 2013, 16:02
Forum: Cameras and Electronics
Topic: Questions on Building a simple paperback scanner
Replies: 13
Views: 9367

Re: Questions on Building a simple paperback scanner

If you put the camera as close as possible, then you won't be able to photograph a larger book from there. The image will also likely have some barrel distortion (at least it does on my A4000 when fully zoomed out). Personally, I would pull it back a couple of feet and use the optical zoom. If you'r...
by rkomar
28 May 2013, 16:06
Forum: Cameras and Electronics
Topic: Questions on Building a simple paperback scanner
Replies: 13
Views: 9367

Re: Questions on Building a simple paperback scanner

What is the distance between your camera and the book? And, can you "lock" the shutter speed to 1/15 s in the camera using chdk, so all the photos are taken with that same shutter speed? Thanks If you have a Canon camera that is supported under CHDK, then the answer is yes. You can set the shutter ...
by rkomar
27 May 2013, 22:30
Forum: Cameras and Electronics
Topic: Questions on Building a simple paperback scanner
Replies: 13
Views: 9367

Re: Questions on Building a simple paperback scanner

I'm still in the planning stage myself, but have been getting some experience taking pictures of music albums. I don't know what quality the A810 is, but my A4000 cameras are just okay in that regard. I have found that it helps to pull the camera away and use the optical zoom to get the subject fram...
by rkomar
26 May 2013, 17:05
Forum: Cameras and Electronics
Topic: Any experience with the Canon PowerShot SX160 IS?
Replies: 6
Views: 6073

Re: Any experience with the Canon PowerShot SX160 IS?

It's probably worth checking out the porting thread for that camera at the CHDK forums: http://chdk.setepontos.com/index.php?topic=9523.0
by rkomar
15 May 2013, 21:48
Forum: Cameras and Electronics
Topic: Cameras for the Hackerspace Scanner
Replies: 77
Views: 69293

Re: Cameras for the Hackerspace Scanner

I know that CMOS is faster, but I don't know if CCD is slow enough to affect single-shot times. It seems you need a CMOS camera to shoot HD video whereas my CCD camera only shoots 640x480, and I've seen complaints about how slow CCD cameras are in continuous mode, but I don't know if it's so slow th...
by rkomar
12 May 2013, 17:40
Forum: Cameras and Electronics
Topic: Cameras for the Hackerspace Scanner
Replies: 77
Views: 69293

Re: Cameras for the Hackerspace Scanner

Doing a quick search for "CCD CMOS", I haven't seen any discussions here about the two sensor types. CMOS is supposedly much faster than CCD. In the past, CCD produced better image quality and noise levels, but that gap seems to have closed in recent times. I wonder if the people complaining about s...