> The limitations now are on how long it takes to get the line up to
> 5V or down to 0V while driving several chips. I don't think you'll
> have any problem driving 32 chips. If you have any trouble, it may
> just require the addition of a nop in your code to let the data lines
> settle before sending your strobe pulse

I had terrible r-m-w problems driving several 74HC gates due to
the collected capacitance of inputs and wiring. As well as the nops
found a 1k loading resistor for the PIC pin helped

This is for inputs but you could use 4017s for motor selection

http://home.clear.net.nz/pages/joecolquitt/0pots.html

As I mention the above, alternative method for multiple inputs

http://home.clear.net.nz/pages/joecolquitt/mixer.html

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