Electronics lcd question (could get quite technical)

Discussion in 'Modding' started by eaterofpies, 2 Mar 2003.

  1. eaterofpies

    eaterofpies What's a Dremel?

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    in an lcd how does it display the pixels does it display them all at once or scan them? and how does it display 1 pixel

    bit hard to explain but it might help if i provided details about the project basically i want to make a massive (well relatively big) display for lan parties to display what ip each server is on and i was trying to replicate the normal parallel lcd controller and thought why not use a lcd with the display removed and wire up to the contacts the lcd actually connects to. i realise that i will have to boost the current quite a large ammount but 1st i need some info on how it works

    can ne one help ?
     
    eaterofpies, 2 Mar 2003
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  2. acrimonious

    acrimonious Custom User Title:

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    It scans them, usually one row at a time.
     
    acrimonious, 2 Mar 2003
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  3. acrimonious

    acrimonious Custom User Title:

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    Found this example circuit:

    [​IMG]

    The shown switch config shows an X on the display btw
     
    acrimonious, 2 Mar 2003
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  4. eaterofpies

    eaterofpies What's a Dremel?

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    just looking at an old 20x4 display and trying to work out which pins do what and there 8 thicker tracks at each of the 4 corners of the display. as theres 4 of them it makes me think 1 set for each row and the 8th pin is the gap between rows of characters as the chars are 5x7 pixels

    would u agree with that?
     
    eaterofpies, 2 Mar 2003
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  5. acrimonious

    acrimonious Custom User Title:

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    Yeah thats a fairly common set up.
     
    acrimonious, 2 Mar 2003
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  6. eaterofpies

    eaterofpies What's a Dremel?

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    now to find 1200 leds and start soldering :waah:
     
    eaterofpies, 2 Mar 2003
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  7. carloshax

    carloshax dealer

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    If you need 1200 led's i can get them for ya, colour size, V, etc....

    Carl
     
    carloshax, 3 Mar 2003
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  8. acrimonious

    acrimonious Custom User Title:

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    £84 is the cheapest that maplin will offer at 0.07p an LED (thats with bulk discount) - NP01B
     
    acrimonious, 3 Mar 2003
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  9. eaterofpies

    eaterofpies What's a Dremel?

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    can get from rapid for 50 odd if i use smd parts
     
    eaterofpies, 3 Mar 2003
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  10. acrimonious

    acrimonious Custom User Title:

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    Good ole' Rapid
     
    acrimonious, 3 Mar 2003
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  11. Splynncryth

    Splynncryth 0x665E3FF6,0x46CC,...

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    Aren't LCDs adreesed a bit like memory?
    I was told of a project one where a guy built a cube of LEDs (full volume, not 6 surfaces) and made it display 3D objects. It might be neat to try and do the same myself sometime
     
    Splynncryth, 4 Mar 2003
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  12. eaterofpies

    eaterofpies What's a Dremel?

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    it probably depends on the type of memory but i dont think the parallel or serial ones are linke any memory ive seen would explain a bit more but got to go
     
    eaterofpies, 4 Mar 2003
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