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Q: Lcd Contrast And Pwm

Discussion in 'Electronic Basics' started by Chris, Sep 17, 2004.

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  1. Chris

    Chris Guest

    Ok so it seems powertip's PG12864 serise of lcd's run at -5v to +5 for
    contrast

    how can i generate a range of -5 to +5 with pwm? i can do -5->0 ot 0->5
    but how can i do the whole range?

    or what would be the best way to have software controlled contrast?

    Thanks
     
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