Development lcd2eink

[fgruber]

how do you map the eink to the LCD? I'm just curious.

[fgruber]

Where did you download the scribble apk. Having a hard find finding it without access to market.

Originally Posted by javese

lcd2eink 0.1.6 released.
added feature:calibration function and hopefully the "map wacom pen event to tablet" can work on EE. There is an app called "Scribble" which uses real pressure sensitivity for drawing.


how to calibrate:
1.launch lcd2eink;
2.press "Calibrate" button;
3.touch the left top of lcd,right top of eink,right bottom of lcd,left bottom of eink,as indicated by arrows;
4.restart wacom listener by uncheck and check "Use Wacom Pen Input".

Thanks fgruber for the wacom.txt. If the "map wacom pen event to tablet" function of this release can work on EE,that's because of you.

[good153]

Thank you very very much, Javese. I can't wait to try it.

[javese]

Originally Posted by ivanjt

Those must be the resolution for the PE.

The EE resolutions are: LCD - 1024 x 600 and e-ink - 1200 x 825.

I don't know if they make any difference but on the EE landscape on the e-ink is not necessary.

Thank you ivanjt for providing the resolution of EE. However given the h/w ratio of lcd is bigger than that of eink, I still think we can get the maximum mapping area on eink by using landscape mode. Surely the best way to find it out is to try. Could you help to download the attachment and try the "landscape.pdf" in landscape mode,"portrait.pdf" in portrait mode,and let me know which one get a bigger area on eink?

[javese]

Originally Posted by fgruber

Hi Javese,

Thanks for the update. The wacom on the EE works now. But I think the calibration needs work. I ran the calibration several times but there is a big offset of several inches between the location where you write in the eink and where the handwriting shows up in the tablet.

Hi fgruber,

How does the calibration work on you PE? I may have brought some confusion in the description of "how to calibrate". When I say "the right top/left bottom of eink", I don't mean the right top/left bottom of the entire eink,but the area of the screen dump on eink,which are indicated by arrows.Also

[javese]

Originally Posted by fgruber

how do you map the eink to the LCD? I'm just curious.

Here is the code for mapping:
if(data.type == 3 && data.code == 0) /*abs,x should be mapped to abs,y*/
{
code = 1;
value = (data.value-wacomStartX)*(tabletEndY-tabletStartY)/(wacomEndX-wacomStartX)+tabletStartY;
}
else if(data.type == 3 && data.code == 1) /*abs,y should be mapped to abs,x*/
{
code = 0;
value = tabletEndX-(value-wacomStartY)*(tabletEndX-tabletStartX)/(wacomEndY-wacomStartY);
}

[javese]

Originally Posted by fgruber

Where did you download the scribble apk. Having a hard find finding it without access to market.

I find it at eoemarket.Hope you can read chinese.

[fgruber]

I was able to install the market in the emulator and downloaded scribbler. It definitely detects changes in pressure. This seems to have a lot of potential! RIght now seems a bit sensitive. Any slight pressure on the eink is leading to thick strokes. Don't know if this could be improved?

Originally Posted by javese

I find it at eoemarket.Hope you can read chinese.

[fgruber]

The calibration on the pe seems good to me. On the EE is just off a lot.

Originally Posted by javese

Hi fgruber,

How does the calibration work on you PE? I may have brought some confusion in the description of "how to calibrate". When I say "the right top/left bottom of eink", I don't mean the right top/left bottom of the entire eink,but the area of the screen dump on eink,which are indicated by arrows.Also

[mokel22]

I second the calibration issues on the EE. In addition, just for shits n giggles I tried to trick the calibrator to fix itself by pressing in areas that would off-set the calibration and it did not change at all. So I calibrated it by pressing in random spots and the calibration did not change. No matter where i hit the calibration stays the same. Something is wrong here if I may say it. I do so look forward to this working on the EE though. Thank you in advance Javese for any updates.

[fgruber]

I was surprised that you only require 2 points per screen instead of all 4 corners in each screen. It seems that in your formula you use a tablet start and end for x and y and the same for wacom. Wouldn't it help to have in the calibration all 4 points per screen?

Originally Posted by javese

Hi fgruber,

How does the calibration work on you PE? I may have brought some confusion in the description of "how to calibrate". When I say "the right top/left bottom of eink", I don't mean the right top/left bottom of the entire eink,but the area of the screen dump on eink,which are indicated by arrows.Also

[javese]

Originally Posted by fgruber

I was able to install the market in the emulator and downloaded scribbler. It definitely detects changes in pressure. This seems to have a lot of potential! RIght now seems a bit sensitive. Any slight pressure on the eink is leading to thick strokes. Don't know if this could be improved?

I may try to divide the original pressure level by 10,this will lower the sensitivity.

[javese]

Originally Posted by mokel22

I second the calibration issues on the EE. In addition, just for shits n giggles I tried to trick the calibrator to fix itself by pressing in areas that would off-set the calibration and it did not change at all. So I calibrated it by pressing in random spots and the calibration did not change. No matter where i hit the calibration stays the same. Something is wrong here if I may say it. I do so look forward to this working on the EE though. Thank you in advance Javese for any updates.

I'm sorry that the calibration doesn't work on EE. can you find /intsdcard/public/calibration.dat in your EE and post it here?Btw,did you restart the wacom listener after calibration by uncheck and check "Use Wacom Pen Input"?

[javese]

Originally Posted by fgruber

I was surprised that you only require 2 points per screen instead of all 4 corners in each screen. It seems that in your formula you use a tablet start and end for x and y and the same for wacom. Wouldn't it help to have in the calibration all 4 points per screen?

Thanks for the suggestion. But it seems the calibration problem on EE can't be solved by4 points per screen.

[fgruber]

Hi javese. I looked for this calibration file on the EE and couldn't find it. Maybe that is the problem. I check on the PE and it was there.

Originally Posted by javese

I'm sorry that the calibration doesn't work on EE. can you find /intsdcard/public/calibration.dat in your EE and post it here?Btw,did you restart the wacom listener after calibration by uncheck and check "Use Wacom Pen Input"?