Customer’s impression:
almost burnt my arduino and usb port with it
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  • Goog product

    posted by bajkerbgd on 04/29/2013
    1 0

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:

    This is cheapest GLCD that i found.

    Cons:

    Product is missing datasheet. There is no clear mart witch display chip or interface is used. Mine just have mark 12864B which is not very helpful.

    OtherThoughts:

    After lot of time wasted this is ST7920. Wiring for 5V supply is here http://renoirsrants.blogspot.com/2013/02/hello-world.html. You can use u8glib to make 'hello world' code. Absolute minimum is:
    Pin1 - GND
    Pin2 - Vcc
    Pin4 - CS
    Pin5 - MOSI
    Pin6 - SCK
    Pin19 - 150ohm resistor to Vcc
    Pin20 - GND
    You do not need pot for contrast as shown in some setups.

    Bottomline:

    I recommend this product

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