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Support Can you calibrate the NC screen?

Discussion in 'Android Devices' started by Jerry-rigged, Aug 26, 2011.

  1. Jerry-rigged

    Jerry-rigged Android Enthusiast
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    Howdy gang-

    Does anyone know if you can calibrate the touchscreen? I am having issues with apps that have icons in the extreme top right corner of the screen - this corner does not seem to want to "see" touches. The Nook for andorid app has the search icon in this corner, and I can't select it at all (if I want to search for a nook book, I have to re-boot to NC 1.2, find and buy the book, the reboot to CM7) Other apps also have icons in this corner of the screen that won't work, so I know it is not a Nook app issue, but a hardware issue...

    Anyone know how to calibrate the touchscreen?

    Thanks-
    Jerry
     

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  2. colchiro

    colchiro Android Expert
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  3. Jerry-rigged

    Jerry-rigged Android Enthusiast
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    kewl, thanks!

    I'll try it when I get home and report back.
     
  4. colchiro

    colchiro Android Expert
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    If you log into that page with your Google account, you can install it from there. Then when you turn on your NC, it'll download and install it for you. :D

    Also, clean your screen with a microfiber or soft cloth before running it. It'll reboot your phone when it's done.
     
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  5. Podivin

    Podivin Android Expert
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    I wouldn't expect the recalibrate to fix that particular problem, it didn't on mine. I could rarely get that tiny little icon up in the corner of the Nook app to respond.
    Since I don't buy B&N books that's not really a problem for me, I use a different reader.
    However, maybe nightly 171 would fix the problem. See Colchiro's post here
    http://androidforums.com/nookcolor-...htly-builds-custom-kernels-3.html#post3127066
     
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  6. colchiro

    colchiro Android Expert
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    Thanks. I posted that and didn't think it might actually fix something. :D
     
  7. Jerry-rigged

    Jerry-rigged Android Enthusiast
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  8. colchiro

    colchiro Android Expert
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    What happens if you rotate your screen 90
     
  9. Jerry-rigged

    Jerry-rigged Android Enthusiast
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    Tried that, didn't help. The extreme corners just don't seem very accurate/sensitive.
     
  10. bobstro

    bobstro Well-Known Member
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    I have had the same issues with two separate Nook Colors, with the Nook Reader software. Also, in some games, the touch is off by about 1/4 inch. I have tp poke high and right to hit targets. I am running CM7 nightlies. I have also had screen protectors on both units.

    Running multitouch diagnostics, it seems accurate. Also, setting a higher screen dpi seems to alleviate the problem. I have no problems hitting small keyboard and nav buttons. It seems to be worse with some programs, though always an issue at the top-right of the screen in either orientation.
     
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  11. Jerry-rigged

    Jerry-rigged Android Enthusiast
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    How do you set the DPI of the screen?
     
  12. colchiro

    colchiro Android Expert
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    With Root Explorer (or a similar app)...


    • Create a backup in recovery, in case you screw up. :D
    • Open Root Explorer... find system folder and tap it, change the folder to read/write by tapping the [Mount R/W] button at the top.
    • Find build.prop and long-press it to bring up a menu. Choose "open in Text Editor"
    • Find ro.sf.lcd_density. It should be 161, change it to 160. (It'll be in the bottom section.)
    • Press menu button, choose, "save and exit".
    • Change permission back to read/only
    • Reboot.

    Changing to a number greater than 240 can cause it to not be bootable. :D
     
  13. bobstro

    bobstro Well-Known Member
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    I've just used lcddensity from the market.
     
  14. saintdanbert

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    I had troubles while using a screen condom but not without one.
    I have not tried the platinum Zagg film yet. I'm too cheap.

    ~~~ 0;-Dan
     
  15. saintdanbert

    saintdanbert Well-Known Member
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    I installed and ran the "calibrate" app. Here is what happened.

    • app screen appears with a START button
    • pressed the start button
    • ... screen goes black
    • ... Nook Color reboot

    I have no way to know if the app simply crashed and forced a restart. There are no "touch this cross-hair" displays or similar, and no other indication that anything did or didn't happen.

    My personal "benchmark" is the search spy-glass in the top, right corner of the Market screen. I need to work at getting that icon press to register and open the text input box.

    Cheers,
    ~~~ 0;-Dan
     
  16. colchiro

    colchiro Android Expert
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    That's exactly what it's supposed to do, but you should clean your screen with a microfiber cloth first.

    You're thinking of a different type of calibration. This one is to set the sensitivity, not accuracy.

    If it was a little friendlier, it would say that it's going to reboot at finish, then throw it on the screen before it does it.
     
  17. saintdanbert

    saintdanbert Well-Known Member
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    I don't find any distinction in the sort of calibration as I read the app description or permissions notes. Sigh!

    So what is my trouble if I have troubles with the extreme corners?
    Is that simply the nature of the Nook Color?

    Thanks,
    ~~~ 0;-Dan
     
  18. colchiro

    colchiro Android Expert
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    I don't know. Never had the issue.
     

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