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  • A must have for all Arduino hobbyists.

    posted by rewkk on 12/17/2011
    2

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

    Pros:

    - Very useful to get numeric and/or state output and to provide input to a sketch into an Arduino using only 3 pins.

    - Rather cheap for all the functionality provided.

    - The little ribbon cable used to chain several modules can be used to connect the Arduino, when soldering a adequate outlet on a prototype shield.

    Cons:

    - Build quality is rather average.

    - Finding datasheet about the chip used is very difficult.

    OtherThoughts:

    It can easily be used with the excellent lib :

    http://code.google.com/p/tm1638-library/

    Bottomline:

    This is obviously a must have for any Arduino hobbyist.

    It can either be used for its own sake, just for fun, or to provide a good way to display some internal values when building something bigger. For example, buttons can be programmed to select a given value to display.

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