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advice for my first board with a QVGA LCD or alike

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DarioG
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2010/11/28 07:08:18 (permalink)
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advice for my first board with a QVGA LCD or alike

thanks in advance Smile

This is going to be my first board with a 320x240 or 480x272, RGB with some 65536 (or 4096, or 16M) colors - still have to decide.

I (we) found the "glass" for some 7 to 15 EUR or so; then I need to pick one controller so I'm asking for advices about it (I took a quick look at the Microchip MAL and they have at least one supported).
And I would also like to use the PICDA, which *might* work pretty fine with no external memory, I'd say at least up to 320x240 12 bit...

GENOVA :D :D ! GODO
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    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2010/11/28 07:09:57 (permalink)
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    PS: It will probably be a generic display with a I2C or SPI interface, to be used in several devices, with a set of Graphic Primitives and a library of icons/fonts..

    GENOVA :D :D ! GODO
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    Lurch
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    Re:advice for my first board with a QVGA LCD or alike 2010/11/28 07:43:59 (permalink)
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    Hi Dario,
    maybe not exactly what you are looking for (and a German site), but essentially the type you are looking for. It uses the HX8347D controller with SPI and an MI0283QT glass. The controller is easy to program and the link contains further links for software and schematics. I set up a HardwareProfile to use the MAL and it works very well. If the glass you chose can interface to that controller, it might be worth looking at. You could use the C-lib they have or the MAL.
    http://www.watterott.com/de/MI0283QT-2-Adapter

    #3
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2010/11/28 08:33:07 (permalink)
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    I was able to switch to english Smile

    Thank you Lurch, sounds nice: I'm not sure "what you get for the price" i.e. is it the board, the controller & the display & the touch? or just what?

    Because basically this is what I'd like to create, so maybe I can either re-develop it from scratch , and save money, or just use that..

    GENOVA :D :D ! GODO
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    Lurch
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    Re:advice for my first board with a QVGA LCD or alike 2010/11/28 09:58:59 (permalink)
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    The link was just meant as an idea - not a sales pitch. I use them because they work on 5V and 3.3V and - mostly - because I can't design boards very well. I don't particularly like their ADC setup with ADS7846, not as responsive as just using ADC (they use the same SPI for the ADC controller - causes conflicts with MAL). But compared to other offerings fairly cheap and a nice TFT with touch screen. I use them for dsPIC33 projects with 28pin chips because SPI only needs a few pins and they can handle 40MHz SPI speed writing.

    For someone with your capabilities it should be easy enough to see how they set up the controller for SPI and then just do it yourself. As I mentioned, you can use the stripped down code or the MAL.

    <edit: they offer it complete, without TFT and just board. But if you can design your own, do that>
    post edited by Lurch - 2010/11/28 10:00:48
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    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2010/11/28 10:09:38 (permalink)
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    Thank you Smile no I did not take it as a sales pitch, but only needed some more info.

    So, well, yes, I guess I (we) will be designing it from scratch, and I take that controller as one of the suitable ones for MAL and the LCD we're planning to use.

    Agreed on the SPI thing, same idea as mine.

    GENOVA :D :D ! GODO
    #6
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2010/12/13 08:58:12 (permalink)
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    any other advice? Smile

    GENOVA :D :D ! GODO
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    rmteo
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    Re:advice for my first board with a QVGA LCD or alike 2010/12/13 09:40:41 (permalink)
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    The uLCD-32PT(SGC) is a 3.2" compact and cost effective all in one ‘SMART” serial display module using the latest state of the art Active Matrix LCD (TFT) technology with an embedded PICASO-SGC serial graphics controller that delivers ‘stand-alone’ functionality to any project.
    Powerful graphics, text, image, animation and countless more features are built inside the module. It offers a simple yet effective serial interface to any host micro-controller that can communicate via a serial port. All screen related functions are sent using a simple protocol via the serial interface.
    The serial platform allows users to develop their application using their favourite micro-controller and software development tools. In short, the uLCD-32PT(SGC) display module, with an integrated touch screen, offer one of the most flexible embedded graphics solutions available.

    You can get it for US$79 here http://shop.4dsystems.com.au/serial-display-modules/261-1010.html
     
    • Low-cost LCD display graphics user interface solution.
    • 240 x 320 QVGA resolution, 65K true to life colours, TFT screen.
    • Display Viewing Area: 48.6 x 64.8mm
    • Integrated 4-Wire resistive Touch Panel.
    • Easy 5 pin interface to any host device: VCC, TX, RX, GND, RESET.
    • Asynchronous hardware serial port, TTL interface, with 300 baud  to 256K baud.
    • Powered by the 4D-Labs PICASO-SGC processor (also available as separate OEM IC for volume users).
    • On-board micro-SD memory card adaptor for multimedia storage and data logging purposes. HC card support is also available for cards 4Gb and larger.
    • DOS compatible file access (FAT16 format) as well as low level access to card memory.
    • Dedicated PWM Audio pin supports FAT16 audio WAV files and complex sound generation.
    • On-board audio amplifier with a tiny 8 Ohms speaker for sound generation and WAV file playback.
    • Comprehensive set of built in high level graphics functions and algorithms that can draw lines, circles, text, and much more.
    • Display full colour images, animations, icons and video clips.
    • Supports all available Windows fonts and characters (imported as external fonts).
    • 16 x General Purpose I/O pins. Upper 8 bits can be used as an I/O Bus for fast 8-bit parallel data transfers.
    • 2 x 30 pin headers for I/O expansion and future plug-in daughter boards.
    • 4.0V to 5.5V range operation (single supply).
    • Module dimensions: 55.1 x 77.0 x 13.8mm (not including mounting tabs).
    • 4 x snap-off mounting tabs with 3mm holes for mechanical support.
    • RoHS Compliant.

    #8
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2010/12/13 14:37:29 (permalink)
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    Thank you very much Rmteo!

    But I want to develop a board, similar to that... so I'm basically looking for the "easiest to interface" (and cheapest, to some extent) LCD glass...


    GENOVA :D :D ! GODO
    #9
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/10 14:46:22 (permalink)
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    May I ask for some further advice?
    Smile
    What about these LCDs (suggested by a customer):
    http://www.globalsources....le/p/sm/1037733418.htm
    http://www.globalsources....le/p/sm/1023380841.htm

    they talk about SSD2119 or SSD1926 driver ;
    or even this one
    Samsung LTV350QV-F05 (which is cheaper).

    Do you believe that a) they'll work with Microchip GAL and b) possibly with PICDA?

    thank you very much for helping in this first (hard) step Smile

    GENOVA :D :D ! GODO
    #10
    tagajaro
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/10 15:22:23 (permalink)
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    http://www.globalsources....le/p/sm/1037733418.htm - This can be driven by PIC24FJ256DA210 since it has a parallel RGB interface. See http://www.utasker.com/Shop/FS-K350QVG-V2-F-01.pdf

    http://www.globalsources....le/p/sm/1023380841.htm  - this cannot be driven since the interface is parallel 8080 interface. You can use other PIC24F devices such as PIC24FJ256GB110 or  PIC24FJ128GA010 with SSD1926. In face you can easily come up with the following hardware:
    Explorer 16 with PIC24F PIM + Graphics LCD Controller PICtail Plus SSD1926 Board + your hardware

    #11
    Neiwiertz
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/10 15:32:33 (permalink)

    Flying With --|Explorer 16|HardWare|SoftWare|-- Fav(s) Gallery Lists
    #12
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/10 17:13:56 (permalink)
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    ok, thanky you guys!
    Tomorrow I'll read more in depth. I get the point that a RGB parallel LCD can be driven by a PICDA (it was developed for that), but then should it not be able to drive the 8080 type as well, just by using it in "other pics mode" ?



    GENOVA :D :D ! GODO
    #13
    tagajaro
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/11 08:32:10 (permalink)
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    It is more economical to use other PIC24F parts if you want to use 8080 interface.
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    appleWiz
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/11 08:45:20 (permalink)
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    Hi Folks,

    If using an LCD module with an 8080/6800 interface, virtually any PIC can be used. However, colour TFT modules with graphic controllers onboard are rare and expensive. You will find TFT panels with RGB digital interfaces much cheaper.

    Choose one with a 33 pin connector, which is -almost- a standard. Then if the display goes obsolete, replacement is easy because several manufacturers make them. uChip's new DA controller looks easy to interface with 33 pin LCD connections, bearing in mind though, the connector is 0.5mm pitch.

    I DO NOT work for uChip, but delighted they have brought out a micro with graphic controller built in grin

    aW

    #15
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/11 12:57:23 (permalink)
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    Thank you both!
    Yep, Tagajaro, it makes sense.
    And thank you AW, will try using a RGB one, with 33 pins and use PICDA!

    GENOVA :D :D ! GODO
    #16
    rmteo
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/11 19:08:45 (permalink)
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    Just received a couple of these 3.2inch TFT LCD module with touch panel & SD card cage
    Not bad for US$26 shipping included - about 20 Euro maybe?

    The 3.2” inch TFT LCD module integrated with a Himax HX8347-A TFT LCD controller and ADS7843 compatible touch screen controller as well as a SD card cage. It is suitable for embedded systems which require display high quality colorful image or video with interactive control and storage purpose. The Module interfaces to microcontrollers via a 2*20 Pin 2.54mm dual row pin header interface , can easily be connected to any microcontroller or FPGA and DSPs.
      HX8347-A 240RGBx320 a-Si 262K color TFT controller ADS7843 compatible touch panel controller Standard SD card cage Support 16 bit RGB565 format , can connect any 16 bit data bus Onboard 3.3V regulator require a single 5V supply 3.3V I/O voltage level tolerance Module Size (L * W * H): 94 * 64 * 14mm including connector


    Why pay for overpriced toys when you can have
    professional grade tools for FREE!!! mr greenmr green
    #17
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/12 03:05:43 (permalink)
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    Nice!
    Well, we're planning on making up our own board, no SD but USB in this case, so we want to start from scratch: but yes this is good!

    And HX8347 should be supported by GAL, I read something here & there if I am not wrong...

    GENOVA :D :D ! GODO
    #18
    rmteo
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/12 08:10:59 (permalink)
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    If you are looking for a source of commercial quantities of LCD's in the US, take a look at Crystalfontz Liquid Crystal Displays

    Their 3.2 TFT display (with OTM3225A controller) is price at $14.38/1,000.

    Attached Image(s)


    Why pay for overpriced toys when you can have
    professional grade tools for FREE!!! mr greenmr green
    #19
    DarioG
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    Re:advice for my first board with a QVGA LCD or alike 2011/01/12 11:46:37 (permalink)
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    That's nice Smile
    Yeah, I know Crystalfontz. Well, I'm not buying in the US Smile and so far only wanting to pick a good-enough one to advice a customer and start developing a board.

    thank you RMteo!

    GENOVA :D :D ! GODO
    #20
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