guest wrote:there arent any free pins on the micro
but it might be possible to multiplex the spi line
otherwise it would probably be easier to add another small micro
or use a 74c925 on the dinsync clock line
it has the display multiplexer and divide by 60 counter built in
but its meant to work with an led display
I have a few 74C925 ICs lying around.
could this be a good circuit for a BPM-meter with 7-segment LEDs? (circuit design is from Fairchild as far as I know)
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