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> 5500 Error - Will No Longer Calibrate?
Cy1clown
post Feb 15 2007, 02:39 PM
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I was thinking about just playing with the numbers to see what works better.
When I interupt the initialization cycle and go to the console as root I can change the file. If I try to change the file through terminal program in qtopia it won't let me. How do I log into root through terminal?

Another thing that I don't understand is why it works if I manually infut a pointcal file but if I do a hard reset in gets locked in the calibrate cycle again.

Oh well if I could find a pointcal file that worked everything should be usable again until I have to hard reset.

Thanks for all the help

Jon
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dougeeebear
post Feb 15 2007, 02:50 PM
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QUOTE(Cy1clown @ Feb 15 2007, 04:39 PM)
How do I log into root through terminal?
*
su
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jfv
post Feb 15 2007, 02:52 PM
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To become root in the terminal in Qtopia type the command "su". If you set up a root password it will prompt you for it, otherwise you go straight to root.
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sdjf
post Feb 15 2007, 03:28 PM
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Jon,
I have a blog post up at wordpress that shows how to extract just a single file from your backups from the command line. You could grab all your /etc/pointercal files and try them out.

The example is for tkcMail index files, but I would hope it is clear enough that you can do it for /etc/pointercal instead.

I don't have the exact URL right now but it should be on the front page at http://sdjf.wordpress.com

I hope it helps. sdjf

EDIT: The exact url for how to extract a single file from Sharp's backup is:

http://sdjf.wordpress.com/2007/01/11/extract

This post has been edited by sdjf: Jun 7 2007, 02:39 AM
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Cy1clown
post Feb 16 2007, 06:28 AM
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I have tried various numbers in the pointercal file and it does not seem to make a lot of difference to the touch screen. It does change but not in a logical manner that I can figure out.

I am begining to wonder if my digitizer is messed up?

I am assuming that my restore from backup should have replaced the pointercal file with the original. If this is true then I believe my digitizer has a problem.

How hard/expensive is this to replace?

Thanks for everyones help
Jon
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sdjf
post Feb 16 2007, 01:11 PM
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Jon,
I don't know anything about prices, but I looked at the article Quickening mentioned, and also the article it referred to: http://www.embedded.com/story/OEG20020529S0046 and the calibration algorithms are complicated math. I don't think there is anything easy to guess about a pattern any more than you can figure out why changing one character of a file will result in a totally different md5sum.

Are there applications you can use with it that don't require using the touchscreen in the meantime? Many apps have keyboard alternatives to tapping the screen. For example, on my 2.38, I can press the up arrow, press another key, and I'll get a dropdown menu of options I can click on with either the center or the ok button, depending on how the apps have been coded.

sdjf
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Cy1clown
post Feb 19 2007, 05:53 AM
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sdjf

There are some that work well without the touch screen and some that don't.
Right now I am trying to decide what I want to do.
If I go to the time and expense of replacing the digitizer I am afraid it iether won't solve my problem or will cause others.
Maybe I should just buy another PDA.

Jon
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sdjf
post Feb 19 2007, 07:43 AM
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QUOTE(Cy1clown @ Feb 19 2007, 05:53 AM)
sdjf

There are some that work well without the touch screen and some that don't.
Right now I am trying to decide what I want to do.
If I go to the time and expense of replacing the digitizer I am afraid it iether won't solve my problem or will cause others.
Maybe I should just buy another PDA.

Jon
*


I see what you mean. But first, before that expense, are you sure there aren't other apps that would take the place of the ones that you need which require the touch screen?

Which ones are essential that don't work? We may know of suitable substitutes...unless you need handwriting recognition or sketching ability, or the games.

If you get another PDA, if you can get one that will open up tar files on SD or CF, then you could at least transfer some non-proprietary data to the new machine.

I guess whatever you end up doing will still be a lot of work. :-(
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tux
post Apr 19 2007, 02:08 PM
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cool.gif


Below are the numbers in my pointercal files for my machines.


67795 0 25 0 69744 82992 65536 for a 3200

-8351 0 32614250 0 -11259 44389992 65536 for a 6000

66646 0 33346 0 70915 -586860 65536 for an 860

21114 213618 0 15360 552960 65536 for a 5500 which might be of some value to the original poster.


biggrin.gif
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