Mike - K8LH
Well-Known Member
I think you may have misunderstood (or I wasn't clear). I was suggesting directly driving each display with some sort of latch with 25-ma/pin capability. No multiplexing at all. Of course there's no reason to throw 6 ICs at the solution (grin) and as you say it probably isn't a viable solution with "big displays".picasm said:Mike,
I agree with you that the 25mA port limits would be ok for a small multiplexed 7-segment display.
But as the OP wants to make his own very large display, I assume he will need many leds per segment, and I don't favour his 5v supply requirement.
I would be happier if the drivers were able to handle about 500mA, at least it would help protect the chips during the software development stage if he had any multiplexing errors etc.
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