■ FIGURE 2
like to have a single pushbutton to
select which input is at the output.
Press once to advance from
input 1 to input 2, press again to
advance the output to input 3, press
again to advance the output to input
4, and press again to go to the
hard part described next.
After advancing through each
input, the next selection by the
push of the button would provide
an output of each video in
rotation with a five or ten second
delay at each input.
The rotation would
sequence from video 1, then 2,
then 3, then 4, and back to 1, and
so on. The next push of the
button would sequence back to
video 1 just like in the beginning,
and remain on video 1 until the
button is pressed again.
There would actually be five
selections that the button rotates
through, with each video as the
source; the fifth would be the
rotating sequence of the inputs.
I need this to be simple,
compact, and lightweight.
— Charlie Willwerth
■ FIGURE 3
AI started out with a discrete logic solution (Figure 2) but when I described the problem to my son, he said
“of course you used a micro.”
Looking at the complexity of the
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