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10-13-2021, 12:28 PM
Hi guys,
In TUT2 there is a random access footswitch, built around a 74175.
It works perfectly with alternate switches set up as momentarily.
Very cleverly done!
I'm trying to use normally open momentaries but I can't get it to work.
I tried moving the 10K pull-ups to become pulldowns by connecting them to the ground rail, but no go.
Can this only be done with normally closed momentaries?
Or do the diodes need to change direction?
Talk to you later,
Strelok
In TUT2 there is a random access footswitch, built around a 74175.
It works perfectly with alternate switches set up as momentarily.
Very cleverly done!
I'm trying to use normally open momentaries but I can't get it to work.
I tried moving the 10K pull-ups to become pulldowns by connecting them to the ground rail, but no go.
Can this only be done with normally closed momentaries?
Or do the diodes need to change direction?
Talk to you later,
Strelok
