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Author Topic: the 5 quid cintiq  (Read 12296 times)
gomi
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« on: January 25, 2009, 05:36:21 AM »

Hey Drew and the Bongofish massive!
Inspired by you all Just bought a bare UD-1212-R: £5.50 on ebay!


No pen or psu, but amazingly I seem to have all the other bits already:

Two-button stylus - old but works:


psu - Phillips 12v 200ma from useless cordless headphones


Assorted Serial cable bits from my Big Messy Box of Cables™


Samsung 152b 15" tft display - Found on the street this summer whilst walking back from the pub!!


I'm going to do a preliminary sandwich test this weekend - If I can bring myself to dismantle this lovely huge tablet.
I have been using an A6 PenPatner for the last 10 years,so  just a tablet this big is a luxury - let alone a Cintiq-style interface.

Anyone got any tips on cutting a hole in the UD-1212? What tools have had the best results? Dremel or Flattened soldering Iron?

Thansk for all the ideas  Smiley
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Tanassi
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« Reply #1 on: January 25, 2009, 02:48:15 PM »

hi,

may be you need this connection scheme, cause the ultrapad serial is not standard


 
ok is in italian, i did it for an italian guy who asked me.
translation:
lato tavoletta = tablet end
lato computer = computer end
negativo alim. = negative supply
positivo aliment. = positive supply
connettore D-sub 9 pin maschio = D-sub 9 pin male connector
connettore D-sub 9 pin femmina = D-sub 9 pin female connector

note: pin 5 of the computer end and negative supply are connected together

good luck and hope this helps you... Vince
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gomi
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« Reply #2 on: January 26, 2009, 08:01:41 AM »

Thanks Tanassi, I had already discovered your very helpful thread.
My home-made Serial / Power cable soldered up and working -
The tablet works perfectly.

Here it is:


I'm going to Dremel a hole out of the UD-1212 front - I guess that is the best way?
Then I figure a sheet of Anti-glare glass?? Mainly because I can just go to a glass shop and they can cut it to size very cleanly and quickly.
Any reasons not to use glass other than fragility?
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gomi
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« Reply #3 on: January 26, 2009, 08:59:06 AM »

Just put the Wacom on the samsung monitor to test for jitter
I cloned the main display and tried drawing lots of lines - I couldn't see any jitter -
I.E. the lines were smooth and the cusrsor did not wobble if I held it still - I
assume that means there's no jitter?
Onward to disasassembly..
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gomi
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« Reply #4 on: January 26, 2009, 11:18:57 AM »

I disassembled the Sammsung 152b - I won't post a teardown guide as it's all covered here:
http://forum.bongofish.co.uk/index.php?topic=1365.0
Thanks MrDomino!

I put the stripped panel and perspex diffuser over the bare wacom board, piece of 2mm glass from a clip frame on top.
Fluoerscent lamps - only enough cable reach to put one on, but that was enough to test the setup - It works!!
You can barely see the squiggles I managed to draw as there is only one CFL tube,
badly positioned and competing with very bright morning sun...

Jitter - I really don't know what I'm looking for but the pen seems to handle as I would expect it to normally...



Now needed:
a piece of glass,
cable extensions for display and CFLS.
A big hole in the front of the Wacom.
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gomi
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« Reply #5 on: January 26, 2009, 05:26:43 PM »

Phew... nearly finished cutting the hole for the glass - hard work.
I used a Dremel with a cutting disc to rough out the hole, then found the sanding wheel was good for nibbling in to the line.
I've been running surform over the edges every now and then to keep the lines straight.
Using a utility knife to tidy up at the corners..
Down to tha last millimetre of plastic now - very hard to keep it neat and straight
I'm going to try using a sanding block for this last bit.
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gomi
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« Reply #6 on: January 26, 2009, 08:26:20 PM »

Sanding block seems to have worked - I used a long oilstone wrapped with sandpaper,
again neatening up the corners by scraping a utility knife very gently with the blade almost perpendicular to the edge.

The glass fits the hole closely enough to not need glue.
I now have no fingerprints...
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gomi
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« Reply #7 on: January 26, 2009, 09:24:04 PM »

Just put all the bits roughly in place before putting the monitor circuits in place.
Still running on one CFL until I extend the wiring.
Calibration pretty rough but I can see how it will work with some tweaking.
Diffuse material is also out of alignment causing light leakage, , but it should snap into place on final assembly.

Still no sign of the legendary jitter - what should I look for I wonder?

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Drewid
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« Reply #8 on: January 27, 2009, 09:52:58 AM »

Don't go looking for it, it might turn up.      Cheesy

So the Samsung 152b is a jitter-free winner.   I really should do a chart of good/bad combinations of monitors and tablets.

Thanks for posting, it's going to be a bit of a step up from the PenPartner.  Is the blank top of the tablet still usable or is there too much stuff in the way?


And as far as I can remember a fiver is some kind of huge cheapness record.    You really found that monitor on the street? I must go to the pub more often.
« Last Edit: January 27, 2009, 09:58:17 AM by Drewid » Logged

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Personal site: Bongofish.co.uk
Claymonkey
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« Reply #9 on: February 20, 2009, 11:16:15 PM »

Good job man! Looks like a solid build.
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