Characters Mirrored on NHD-0420CW Display

Comments

9 comments

  • Saurabh_B

    Would it be possible to get a picture of what you are seeing?

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  • garryg

    photo

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  • Saurabh_B
    From the Photo it looks like the segments are going backwards.

    Can you try sending a 0x2A (Function Set, RE = 1)
    followed by the Entry mode set(0b000001XY) where y could be a 0 or 1, this should stop the mirroring on the display.
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  • garryg

    The original initialization code posted above already included ENTRY MODE SET 0x06 (see line 12)
    The photos posted below are using 0x04 and 0x05 for the ENTRY MODE SET value.

     

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  • garryg

    Not sure what else I can try?
    I have tried the ENTRY SET MODE as suggested with results posted in previous post.
    I have also tried the REV instruction with no success.
    Not sure where else to look.  I have spent days on this problem.
    Any help is much appreciated.  Thank you.

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  • Saurabh_B

    Hello Garry,

    Would it be possible to send me a picture of the back of the display as well?

    I would like to see the date code and the bonding of the OLED Glass to the PCB. I would like to confirm that these are connected properly as well.
    I haven't been able to replicate this issue.

    Has this occurred on multiple displays or have you only been able to test 1?

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  • Lou

    Saurabh_B,
    I am also having similar issues with NHD-0216CW-AB3 -- tried 2 modules.

    Date code is 01 17 NHD_0216CW_AB2.

    Are the SHLC, or SHLS signals, from the US2066 controller, available anywhere on the module PCB?

    Thanks.

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  • Saurabh_B

    Unfortunately the pins are not available to the end user.

    They do come out to the PCB on pins 5 & 6 of the ribbon connector that soldered onto the back of the display.

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  • Lou
    They do come out to the PCB on pins 5 & 6 of the ribbon connector that soldered onto the back of the display.
     


    Thank you.  That worked for me.

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