OK form reading this forum we are trying to make use of an led running at 110 volts vac <BR><BR> <BR>hot 110 vac-->20kohm@1/3watt>>>--cathode led<BR><BR>neutral ...
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The MAX7219 is a compact, serial input/output common-cathode display driver that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 ...
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