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Discussion in 'Microcontrollers, Programming and IoT' started by guratasta, Oct 7, 2013.

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  1. guratasta


    Aug 23, 2010
    Hai me please..
    What can I do to replace the common cathode 7 segment in this project, to common anode 7 segment...????? I am having trouble finding 7 segment CC in my place. thanks for all ... I really hope for this assistance.

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    We've been through this quite a bit before.

    In this case if you replace the BC547's with a PNP equivalent and invert the circuit (the transitors are between the +ve rail and the common anodes) AND then change the code so that all the outputs are inverted, it will work with common anode.

    If you can't change the code it's a real pain. and often fairly difficult (or at least required another 12 transistors and resistors, etc.
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