The New "Standard Scanner"

Mathue · Post by **Mathue** » 23 May 2010, 15:12

New images!

I'm close to done with the counterweight and assorted mechanania.

Since my platen is quite thick (3/8" cast acrylic) it also has got a fair bit of weight. To make scanning easier on the arm it HAS to be counterweighted. It's been a slow process. The stumbling block has actually been what to use for weight. I had originally thought #12 lead shot was the way to go, too pricey though especially with shipping and I didn't find anyone local who had it at a reasonable price either. Next idea, cast iron exercise weights. They worked but they were rather inelegant. Back to the idea of a weight, I constructed a box from 1/4 ABS then tried cutting open the flexible weights you put on your hands and feet. Easily bought, in this case Target. No lead though, it appeared to be reclaimed iron oxide (possibly ground up from cars or any old steel). Then I found rotometals.com, they had lead that made sense! A few days later 6.6 lbs of lead rod showed up. I cut the rod using my bandsaw and plopped the bits into the weight box. As I refine things more I may make a different, smaller counterweight box for the lead since there's clearly quite a bit of dead space inside the box currently.

Mathue · Post by **Mathue** » 24 May 2010, 22:31

Here is a shot of the handle and Reetz Switch installation.

mutantstrain · Post by **mutantstrain** » 02 Jun 2010, 02:32

Ok I figured something out that I think the group can use. I bought the Ricoh CA1 and the motorola Y splitter, (thinking maybe the one Dan bought was perhaps bad). Well, Daniel is right the Motorola Y splitter does not work.

However, After some splicing, the red wire from the CA1 goes to the red wire on the motorola, the black wire from the Ricoh should then be soldered to the Shielding (the outer wiring) and not the black. Everything else can be ignored. Hope that helps.

So in summary Ricoh red --> Motorola red. Ricoh black --> motorola shielding. Thats it.

Post by **daniel_reetz** » 09 Jun 2010, 17:30

thanks, mutantstrain!

jackhooks, are you a spammer? you sure look like one.

rob · Post by **rob** » 13 Jun 2010, 08:02

I've deleted jackhookss. More info in Social.

mutantstrain · Post by **mutantstrain** » 13 Jun 2010, 15:42

Curious Daniel ...

Do you find you are slowed down by the pulley system vs the hinge? What seems nice with the new scanner is that the pressure is more evenly distributed across each page, and I would imagine that there is less shifting and skewing of pages during the process.

If I had the time I would make another one, but right now I am doing fine with what I got ... should post some pics soon. I just used tripods for the camera supports. In some ways I think tripods are better because there are no vibrations on the cameras, and I can slow down the shutter speed to 1/20th second to get a low iso and stopped down aperture.

Thanks really for this. Before finding your plans I was considering the ATIZ, but at $5k ...well ...

Post by **daniel_reetz** » 13 Jun 2010, 22:37

I haven't really noticed much of a speed difference in any system I've made so far. The Instructables scanner design was really finicky to set up, so there was some time lost there, but otherwise, no, things have been pretty good. Wish I had more to offer here, but generally, they've all been pretty fast.

mellow-yellow · Post by **mellow-yellow** » 02 Jul 2010, 13:07

Regarding MutantStrain's post above (http://www.diybookscanner.org/forum/vie ... t=80#p3894), could anyone provide an image or explanation for an electronics novice? He wrote, "So in summary Ricoh red --> Motorola red. Ricoh black --> motorola shielding. Thats it." Based on the electronics here (http://www.sakeoftruth.com/2010/04/usb- ... ject-pt-1/), I wonder if he means this:

mutantstrain · Post by **mutantstrain** » 05 Jul 2010, 01:48

mellow-yellow wrote:Regarding MutantStrain's post above ....could anyone provide an image or explanation for an electronics novice?

Well, heres an idea for you. Plug the mini usb's into a camera. Leave the wires exposed on the other end. Take the exposed wires from the RIcoh, ( Yup, I had to cannibalize the Ricoh.

) and experiment with placing the black from the RIcoh to either the black on the usb cable OR the shielding. Red stays with red. What I found is that on one cable black stayed with black, yet on another mini usb it will go to the shielding. Hope that helps. I've already soldered and covered all my connections so I can't show you a picture.

I really do not think you have to worry about frying anything. Turn the camera on. Turn the ricoh on and press the button. If you get focusing and shutter release ... viola! If not, try again another way ...

mutantstrain · Post by **mutantstrain** » 05 Jul 2010, 01:52

mellow-yellow wrote:Regarding MutantStrain's post above (http://www.diybookscanner.org/forum/vie ... t=80#p3894), could anyone provide an image or explanation for an electronics novice?

Looking at your picture, you will need to expose the aluminum foil ( or wire mesh) that surrounds ALL the wires ... THATS the shielding.

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The New "Standard Scanner"

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