Finding the right chips to talk together is annoying, especially when a toddler is constantly attacking you and your paperwork. I may have to rework a few counting strategies.
LT1_distributor_optical_disk.jpg
My 8 channel analog multiplexer/demultiplexer chip had to be switched to a 16 channel one, due to a different counting strategy. (all low inputs make a count, leaving me with 7 outputs, not 8 to use with my ripple counter) The 24 pin dip version is obsolete and no one stocks it. So, I will use the CD74HCT4067-Q1 chip.
cd74hct4067-q1 pinout.pngcd74hct4067-q1 logic table.png
You can see how I tie in the ripple counter. To the uninitiated, a binary counter turns on certain output pins on the chip to express a number. a 7 would use 3 pins, 1+2+4. So, it should be a small matter to tie the proper value pins together from the counter directly to this chip. (basically, an electronic rotary switch).
I am being attacked again. be back when I can.
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