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  • Nice for own projects

    posted by DrJones on 03/04/2012
    3

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

    Pros:

    Nice module with a nice LED driver. Comes with an ATmega8 just waiting to be programmed by you. Includes an ISP header.
    There are spots on the board to add several components like a temperature sensor or a battery buffered real time clock.
    Three buttons.

    Cons:

    The original clock software is a matter of taste, but the date display with chinese symbols is a con for most. Bought it for programming myself anyway.
    Mine is off by 6.5s per day. Some software adjustment is needed to compensate.
    Lacking documentation. It took me a while to finally get my program working. See the forum posts for my demo c-code.
    LEDs are organized in rows within each 8*8 matrix, which adds to software complexity.
    Also some easily accessible connectors for own expansions would have been nice.

    OtherThoughts:

    Seems to be a red&green LED matrix with only red used. It would need two HT1632 to drive both colors though.

    Bottomline:

    Nice module for those used to micro-controller programming. Now trying to find a project for the second module I ordered :)

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