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 royeven
09 Apr 2013, 16:38
Forum: R&D and New Technologies
Topic: Color and lighting correction techniques
Replies: 6
Views: 11552

Re: Color and lighting correction techniques

I too am very interested in color and lens correction. I have a Nikon D3200 to take photos. I know the LEDs I'm using for lighting, and have posted the color spectrum from them here: http://www.diybookscanner.org/forum/viewtopic.php?f=16&t=2761&start=10#p15735 Is is possible to use lightroom to corr...
by royeven
27 Feb 2013, 18:56
Forum: Lighting
Topic: Uneven light
Replies: 17
Views: 19551

Re: Uneven light

The LED spectra from these phosphor conversion LEDs is pretty broad. I'll try to post some samples from my spectroscope soon. How broad are we talking about here? I didn't purchase the LED that's in the shopping list, but instead bought two of these to test with: http://viewitem.eim.ebay.no/10W20W3...
by royeven
14 Dec 2012, 11:01
Forum: Lighting
Topic: Wrong LED type?
Replies: 1
Views: 6125

Re: Wrong LED type?

The specifications also say that the LED you ordered is "Halogen Equivalent". According to [1], halogen light usually equals a color temperature of about 3000K. There is always the possibility that the seller has made an error and that the LED you bought isn't 6000K but about 3000K. In my opinion, y...
by royeven
09 Dec 2012, 13:19
Forum: Scanners and Build Threads
Topic: Manufacturing the hackerspace kit from the eps files
Replies: 8
Views: 5563

Re: Manufacturing the hackerspace kit from the eps files

What design modifications are you planning? Please share them! Feel free to dump them in github somewhere or fork from https://github.com/markvdb/diybookscanner and make a pull request! I'll see what I'm allowed to put into the repository when I'm finished with the project. Some of the modification...
by royeven
07 Dec 2012, 08:59
Forum: Scanners and Build Threads
Topic: Build Thread for the Hackerspace Scanner Kits
Replies: 78
Views: 88221

Re: Build Thread for the Hackerspace Scanner Kits

kalyan wrote:Camera used : A pair of Canon A810 with CHDK
I had a look at your sample photo and I'm impressed with the quality. Could you post the original photo for comparison?

Does the A810 with CHDK work with gphoto2 or do you use mechanical triggers? What power supply do you run the cameras off?
by royeven
07 Dec 2012, 06:58
Forum: Cameras and Electronics
Topic: Nikon D3200
Replies: 6
Views: 7123

Re: Nikon D3200

Has anyone tried this camera? I'm very interested in it, but I'm very uncertain as I cannot find any mention of it together with gphoto2. It would be nice to be able to take pictures via usb
by royeven
07 Dec 2012, 06:31
Forum: Scanners and Build Threads
Topic: Manufacturing the hackerspace kit from the eps files
Replies: 8
Views: 5563

Re: Manufacturing the hackerspace kit from the eps files

There is no depth layer information present in the current design. This will have to be entered manually in a format that your cnc supplier can understand. With http://diyboookscanner.eu, we have work underway to port the design into the free software openscad 3d format, but that isn't complete yet...
by royeven
28 Nov 2012, 03:23
Forum: Scanners and Build Threads
Topic: Manufacturing the hackerspace kit from the eps files
Replies: 8
Views: 5563

Manufacturing the hackerspace kit from the eps files

Hi all Since this topic has a different approach than the other threads about the hackerspace kit, I choose to start a new thread. If the moderators finds that this subject belongs to another thread, feel free to merge it into the correct thread and bear with me since it is my first post on this for...