5.0
  • 5 star 5 ( 50% )
  • 4 star 4 ( 40% )
  • 3 star 1 ( 10% )
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Customer’s impression:
almost burnt my arduino and usb port with it
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  • Nice LCD display

    posted by Renoir on 02/12/2013
    2

    Involvement:General (knows how to use it) - Ownership:1 day to 1 week

    Pros:

    Very nice clear display. Nice blue backlight, and relatively easy to get going with some tips. Ideal for my small project and seems like it is solidly built.

    Cons:

    No instructions, so novices would need some help to get going - not quite a plug and play, but fairly close.

    OtherThoughts:

    Using some google-fu, I tracked down the library and connections that made it work:
    the u8GLIB library http://code.google.com/p/u8glib/wiki/thelloworld
    a very handy post http://parenthetic.blogspot.co.uk/2011/12/hello-world-in-arduino-with-st7920-lcd.html
    and the datasheet http://www.dfrobot.com/image/data/FIT0021/ST7920.pdf
    I ended up with the following wiring:

    E = ESCLK = SCK = PB5 = D13
    R/W = RW = MOSI = PB3 = D11
    RST = PB0 = D8
    RS = a0 = d1 = Data/Register select = D9

    (in the picture I also linked PSB to GND (to select serial input). Don't know if this is required.

    and wiring
    BLA = A = 1.2k resistor to 5v
    BLK = K = GND
    VCC = Vcc = 5v
    GND = GND

    I then uploaded the 'Hello World' example from the u8glib, and uncommented and changed the header line from the defaults:

    U8GLIB_ST7920_128X64 u8g(13, 11, 9, U8G_PIN_NONE);
    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17

    This got me showing the 'Hello World' on the display.

    Bottomline:

    Excellent value display - would buy more.

    • Hello World (running from arduino nano pro)

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