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 markvdb
24 May 2014, 14:54
Forum: Spreads and SpreadPi
Topic: SpreadPi: The new DIY Book Scanner control system.
Replies: 47
Views: 46609

Re: SpreadPi: The new DIY Book Scanner control system.

I just got my Pi up and running but it looks like I have the same focus problem as Kifty. All pictures are just blured. Also it looks like the camera does not have the same settings. Does anyone know what I am doing wrong here? Just double checking... You do realise that these are the embedded thum...
by markvdb
18 May 2014, 05:32
Forum: Spreads and SpreadPi
Topic: SpreadPi: The new DIY Book Scanner control system.
Replies: 47
Views: 46609

Re: SpreadPi: The new DIY Book Scanner control system.

I believe that's the image I'm using: spreadpi_latest.img.gz has that size and timestamp. I'll try doing a git pull next time and see what happens. Any advice on doing that? I'm a bit of a git newbie. Yes, as I promised, I have linked spreadpi_latest.img.gz to the 20140404 image. Getting the latest...
by markvdb
06 May 2014, 16:11
Forum: Cameras and Electronics
Topic: Other brands of cameras (not Powershot or Coolpix)
Replies: 7
Views: 4510

Re: Other brands of cameras (not Powershot or Coolpix)

Pingpong wrote: I also looked at the Raspberry Pi camera, but it seems to have pretty low fidelity more comparable to a better webcam).
So not a solution...
by markvdb
06 May 2014, 13:37
Forum: Spreads and SpreadPi
Topic: SpreadPi: The new DIY Book Scanner control system.
Replies: 47
Views: 46609

Re: SpreadPi: The new DIY Book Scanner control system.

Hi,

The latest one (April 24) has some problems that I am still investigating. I fixed this temporarily for you by pointing spreadpi_latest.img.gz to an older build.

Mark
by markvdb
06 May 2014, 03:03
Forum: Cameras and Electronics
Topic: Other brands of cameras (not Powershot or Coolpix)
Replies: 7
Views: 4510

Re: Other brands of cameras (not Powershot or Coolpix)

I can only politely restate the advice that I already gave you.

Seeing that this is not about book scanners at all, your question is rather off topic here. If you have any questions, feel free to ask me in private. You should easily be able to find an email address to contact me...
by markvdb
04 May 2014, 12:54
Forum: Cameras and Electronics
Topic: Other brands of cameras (not Powershot or Coolpix)
Replies: 7
Views: 4510

Re: Other brands of cameras (not Powershot or Coolpix)

Mark is right, but it depends on whether or not you need the images to be synced or to fire at an exact moment. If so, CHDK. If not, you can wire the shutter button of any camera up to a remote switch. But it's a lot of work and the timing is not guaranteed. You're absolutely right about the remote...
by markvdb
04 May 2014, 12:16
Forum: Cameras and Electronics
Topic: Other brands of cameras (not Powershot or Coolpix)
Replies: 7
Views: 4510

Re: Other brands of cameras (not Powershot or Coolpix)

CHDK is the only cheap option. Really.

Remote triggering out of the box is not going to happen on any cheap camera. The CHDK developers amazingly hacked their way around it. You won't find anything cheaper than that.
by markvdb
26 Apr 2014, 17:31
Forum: Show and Tell / Book Projects
Topic: [PE23] Student Project - Hack ta bib !
Replies: 3
Views: 7934

Re: [PE23] Student Project - Hack ta bib !

I would love to see photos or drawings of any prototype too!

Mark
by markvdb
30 Mar 2014, 04:23
Forum: Spreads and SpreadPi
Topic: Installing SpreadPi on your Raspberry Pi
Replies: 13
Views: 12371

Re: Installing SpreadPi on your Raspberry Pi

Also, have a look at https://github.com/DIYBookScanner/spreadpi/wiki for some more detailed installation instructions that I've slowly been piecing together.

Mark
by markvdb
30 Mar 2014, 04:21
Forum: Spreads and SpreadPi
Topic: Installing SpreadPi on your Raspberry Pi
Replies: 13
Views: 12371

Re: Installing SpreadPi on your Raspberry Pi

Dan,

You can avoid having to ssh, virtualenv and run spreadpi configure very easily.

Just drop a text file named OWN.TXT into the root of both cameras. Give one of them the contents "odd" and the other "even".

Mark