MPG Mesa 7i73 im stuck

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29 Jun 2018 10:02 #113073 by andypugh
Replied by andypugh on topic MPG Mesa 7i73 im stuck

when selecting a it turns yellow
when selecting b it turns yellow with d
when selecting c it turns yellow
when selecting d it turns d and b yellow


A binary-coded switch is more efficient with IO. But I am confused by your description.

Do you mean:
PositionOutAOutBOutCOutD
A1000
B0101
C0010
D0101

So that B and D have identical outputs?

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29 Jun 2018 10:11 #113074 by lesureia
Replied by lesureia on topic MPG Mesa 7i73 im stuck
Thats looks correct in your diagram i doublechecked.

Yes B and D are identical.

And thanks for your kind help.

im away this weekend but will be back on monday

/Rickard.L

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29 Jun 2018 10:15 #113075 by andypugh
Replied by andypugh on topic MPG Mesa 7i73 im stuck

Thats looks correct in your diagram i doublechecked.

Yes B and D are identical.


That sounds wrong. (it makes the switch useless).

Perhaps there are some wires touching where they shouldn't or some other wiring fault?

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