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popperd
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2020/03/31 16:07:21 (permalink)
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simple display

Hello,
 
I want to use a chip display, probably something like a 4" TFT LCD display, to show something like a graphical progress bar, from my PIC16F690.
Can you guide me where whould I read to understand hoe can I do it.
if I need a driver, does is matter what kinf of chip display to buy, etc.
 
Thanks.
#1

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    katela
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    Re: simple display 2020/03/31 16:12:50 (permalink)
    +1 (1)
    When it comes to graphics, it's better to use a PIC with more memory. It's not gonna be easy with that PIC16F690

    Free online Microcontroller Tutorials and Projects for Hobbyists and students. From beginners to advanced. Website: www.studentcompanion.co.za
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    #2
    popperd
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    Re: simple display 2020/03/31 16:25:13 (permalink)
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    Thanks.
    1. If I only use low resoultion, and unfrequently changes, can I handle it?
    2. If I need to use a more advanced PIC, can you guide me where to read?
    #3
    pcbbc
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    Re: simple display 2020/04/01 00:32:05 (permalink)
    +1 (1)
    Do I presume you meaning a full colour display, or just monochrome 128x64-pixel or 132x132-pixel like a EA DOG display?
     
    The Hitachi clone monochrome graphics LCDs are generally possible with some restrictions. For example making sure the text and graphics you draw are aligned with the 8 pixel rows.
     
    If text or graphics overlap rows then you find you do not have sufficient PIC RAM to store a complete screen bitmap for drawing overlapped elements, and things become tricky/impossible.
    #4
    ric
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    Re: simple display 2020/04/01 01:04:09 (permalink)
    +2 (2)
    To me, a "simple display" would be a 16x2 LCD.
    Full graphics is not "simple".

    I also post at: PicForum
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    #5
    popperd
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    Re: simple display 2020/04/02 03:11:35 (permalink)
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    Ok Thanks.
    Can you guide me where to read how to use a 16x2 LCD?
    and where to read how to use a full graphics with a more advanced PIC?
    #6
    mpgmike
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    Re: simple display 2020/04/02 03:27:14 (permalink)
    +1 (1)
    Check out the Nextion Displays:
     
    https://nextion.tech/basic-series-introduction/
     
    Nuts And Volts Magazine is currently running a series on the Nextion with a PIC 8-bit.

    I don't need the world to know my name, but I want to live a life so all my great-grandchildren proudly remember me.
    #7
    popperd
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    Re: simple display 2020/04/02 03:34:05 (permalink)
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    Thanks.
    I'm already using Nextion. but it's an expensive display, and I don't need a touch panel.
    #8
    katela
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    Re: simple display 2020/04/02 03:52:15 (permalink)
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    popperd
    Ok Thanks.Can you guide me where to read how to use a 16x2 LCD?and where to read how to use a full graphics with a more advanced PIC?

    https://www.amazon.com/Us...Projects/dp/1119940702
    https://www.amazon.com/Gr...ications/dp/1304606546
    post edited by katela - 2020/04/02 04:05:36

    Free online Microcontroller Tutorials and Projects for Hobbyists and students. From beginners to advanced. Website: www.studentcompanion.co.za
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    #9
    trossin
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    Re: simple display 2020/04/03 12:07:38 (permalink)
    +1 (1)
    I have an example here:

    https://www.sites.google....ronics/pic#h.p_ID_1399

    Of a 4 line LCD display in C. There is also a voltage meter example there that draws a horizontal bar graph with the display using a custom font. It is written in souceBoost C but it should be easy to port.

    There are other projects on the page that you might find helpful if you go to the top of the page

    Crap. I see the 4 line terminal was assembler. Maybe the code in Camera Control is better:

    https://www.sites.google....s/pic#h.p_vUhTqQbiKHhp
    post edited by trossin - 2020/04/03 12:15:50
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