How to change contrast LCD?

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  1. - 3rd July 2005, 13:06 #1
    MCU Destroyer's Avatar
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    Post How to change contrast LCD?

    The scheme of connection looks thus:

    Conclusion Vo LCD is connected by the resistor 470 Ohm to Vss.
    The same conclusion (Vo) is connected by the resistor 1 kOhm to one of conclusions PIC16F877A.

    The sense of such connection - through the resistor 470 Ohm on LCD acts "-" and contrast maximal.

    Through the resistor 1 kOhm on LCD should act "+" and consequently contrast LCD should fall.

    How it is possible to realize for PBP program change of a level "+" on conclusion PIC?
  2. - 3rd July 2005, 13:16 #2
    Melanie's Avatar
    Melanie
    Melanie is offline Prolific Poster
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    Easy LCD Contrast.

    http://www.picbasic.co.uk/forum/showthread.php?t=49

    Do a search for the companion thread Easy LCD Backlight.
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