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Author Topic: The Reflectiq  (Read 23057 times)
robcat2075
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« on: July 01, 2007, 02:23:01 AM »

This is something I thought of after I messed up my first monitor...  superimposing the monitor image onto the drawing tablet via a reflection.  It took me a while to obtain another cheap LCD monitor but here it is, cobbled together from scraps of wood and a few hardware store parts. 

I just look thru the glass and the monitor appears on the drawing tablet

 My video cam has trouble picking it up, but I got some stills:







The screen looks blurry  because I was hand-holding the camera for long non-flash exposures.

and this is my first, proud, drawn-directly-on-screen animation:

http://www.brilliantisland.com/diy/jump.swf


Advantages:
  • a zillion time better than a plain drawing tablet
  • no jitters from interference with the LCD electronics
  • can use cheap Aiptek tablet
  • image can be exactly on the drawing surface, not below a transparent cover
  • hand never obscures interface or drawing area

Disadvantages

  • uses cheap Aiptek tablet
  • getting image exactly aligned is tricky but can be done
  • image is reversed right to left
  • wooden parts may attract termites

the reversed screen is the biggy.  I flipped the sensor in the Aiptek so it reverses pen motion to match the image.  Drawing is not a problem but interface text is reversed.


My previous monitor looked like it might have been possible to flip the screen around inthe case, but this one is less likely, so I'll be looking for another cheap one unless I find a software way to flip the monitor image.


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Robert Holmén
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Tanassi
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« Reply #1 on: July 01, 2007, 10:02:45 AM »

WOW ROB... that's really brilliant!  Grin

... vince
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Drewid
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« Reply #2 on: July 01, 2007, 03:37:51 PM »

Leonardo and Albrecht Durer would be proud of that.

Nice piece of lateral thinking there.
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bubbaflamm
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« Reply #3 on: July 03, 2007, 03:24:29 AM »

that's not a bad idea.  when i was much younger a friend had something like this that was designed to let you trace things from the other side.  it was a lot like the "digi-draw" that is sold by easily excitable anrrators late at night.  This is a much cooler application of the concept.  and it's might be a reason for my aiptek to be dug back out of my closet.
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robcat2075
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« Reply #4 on: July 03, 2007, 06:51:32 AM »

when i was much younger a friend had something like this that was designed to let you trace things from the other side

I had read a description of such a device a long time ago and that was what made me think of this.  It was said to be a "commercial artist's trick" for reversing a drawing.
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Robert Holmén
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« Reply #5 on: August 15, 2007, 05:47:36 PM »

Most video card drivers will allow you to flip the image

if yours doesnt, you could find a cheap video card that does
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Made that, not my best, but I love it.  Firefoxy lol
It's all fun and games till someone loses a testicle.   Cheesy
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« Reply #6 on: August 15, 2007, 11:15:15 PM »

 Shocked

that is such a good idea!
I just need a glass to try it!

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robcat2075
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« Reply #7 on: August 15, 2007, 11:20:17 PM »

Most video card drivers will allow you to flip the image

if yours doesnt, you could find a cheap video card that does

If you can identify a specific card that really can flip the image, let me know, but most drivers can only rotate the image 180° (at best), which is not the same as a left-to-right flip
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Robert Holmén
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« Reply #8 on: August 16, 2007, 03:34:24 AM »

My nVideo does i am pretty sure
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Made that, not my best, but I love it.  Firefoxy lol
It's all fun and games till someone loses a testicle.   Cheesy
robcat2075
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« Reply #9 on: August 16, 2007, 10:18:22 AM »

My nVideo does i am pretty sure

I've already asked their customer support about this.  Once they understood the difference between 180° rotation and reversing right-to-left, they confirmed that no NVIdia card would do this.  ATI drivers don't have sucha n option either.

There's no reason it couldn't be done.  I'm sure the cards' hardware is capable of the transformation, but no one has programmed it into their drivers.  Sad

But if you actually see a card that does a genuine right-to left flip, tell me.  I want that card!
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Robert Holmén
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EmilM
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« Reply #10 on: September 01, 2007, 03:32:07 PM »

I'm thinking about doing something similair as you robcat2075, how exactly did you flip the sensor?

I use msn and if you got the time to chat then please add me on "emil at meiton.se"  Cheesy
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robcat2075
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« Reply #11 on: September 01, 2007, 05:51:01 PM »

how exactly did you flip the sensor?

That was the easy part.  I opened the case flipped the floppy circuit board that is the sensor over from left to right.  There is a small rigid circuit board at the bottom of the larger one. I put electrical tape over it so nothing would short when it got pressed against the metal back of the case.  I also had to reroute the cable slightly.

Be careful while moving things, they don't like being handled.

I don't think this will work with a wacom tablet which is all a hard circuit board.

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Robert Holmén
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« Reply #12 on: September 02, 2007, 05:39:24 AM »

wacom allows you to do it easily in the control panel Smiley

wacom wins again lol
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Made that, not my best, but I love it.  Firefoxy lol
It's all fun and games till someone loses a testicle.   Cheesy
robcat2075
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« Reply #13 on: September 02, 2007, 07:06:08 AM »

wacom allows you to do it easily in the control panel Smiley

wacom wins again lol

Honest to God, I wish it did, but the "flip" the the wacom control panel does won't work here since it reverses both the vertical and the horizontal (aka 180° rotation) together. I've got a graphire with the latest drivers, and that's what it does.

For this mirror trick to work you need to flip the horizontal only on either the tablet or the display (but not both at the same time).

I'd like to get ahold of another IBM 9511 lcd monitor like the one I messed up. Its internals looked like they would be favorable for flipping the lcd and re seating it inthe case.  Some sawing of the plastic innards would be needed, btu I think it could be done.  Then the display woudl look correct in a mirror and I could use an unreversed tablet, like a wacom which is superior in every other regard.
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Robert Holmén
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EmilM
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« Reply #14 on: September 03, 2007, 10:22:26 PM »

I'll be looking for a solution to flipping the screen.., I'll be sure to tell you if I find one!
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