2 CD74HC4067 Multiplexer with Arduino Uno

Dear, I am quite new at this staff and now I feel stuck for this issue. I have a project for a Led clock where I'll have 12-LED-string to indicate Hours and other 12-LED-string to indicate 5-minute stretches. I am able to control one 12-LED-string by using CD74HC4067 library. The problem is that i need to control two LED at same time, one per 12-LED-string. Is anybody willing to help me? Thank in advance.

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A 74HC4067 is the wrong device; it is for multiplexing inputs, not outputs.

A diagram of what you are doing now would be a good start.

dougp: No private consultations undertaken!

What about if they pay you?

Paul__B: What about if they pay you?

That's meant to dissuade pm's requesting off-line assistance. But you knew that, right?

Besides, the mentally ill deserved specialized treatment, which I'm not qualified to dispense.

If someone offered to pay me for C++ skills (a first) I would take it as evidence they are disturbed and decline.

p.s. My avatar, which I alone cannot see, represents me trying to follow some of the discussions around here. :slight_smile:

dougp: If someone offered to pay me for C++ skills (a first) I would take it as evidence they are disturbed and decline.

I see method in that madness!

+1