Hi all,

    I have to make a 220volt lamp matrix of 7x5 lamps=35 lamps. With it, I
will be able to "draw" different letters. If they were leds, I would only
need to control a row (or a column) and do refreshment in every other column
(or row).
    Does anyone know how to control all these lamps using the fewer lines of
a Pic micro, and also fewer triacs ?


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