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Rotary Button (Forgotten Worlds)

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MameJunkie:

I came across some rotary buttons that I was thinking of making a CP for games like Forgotten Worlds, Front Line...

Two part question with this post.

1 - What other games can you think of that uses a rotary push button?

2 - Harder...It has 5 pins.  2 are for the push button (easy, done)
But the other 3 are 1 gnd and 2 signal.  If you look at both signals at anytime, it can be in one of the 4 states in order...

[0,0] [0,1] [1,1] [1,0] back to [0,0]

Rotating one direction changes the signal one way and reversing changes the other way.
So if you are at [1,1]...right = [1,0] and left = [0,1]

How do I wire it up or make a circuit so that all I end up is one for going LEFT and one for going RIGHT?



armax:

do you have pics?  I don't think I've ever seen one.

MameJunkie:

I'll post some pics when I get home tonight.

MameJunkie:

The left are the rotary buttons.
You can see 3 pins on one side (rotary) and 2 on the other side (button).

On the right, I also got a handful of small LED buttons that reminds me of the old Atari cone buttons (without the cones). 

NoOne=NBA=:

Forgotten Worlds actually used a push-to-fire optical spinner, similar to the Oscar V2, IIRC.

Front Line used an 8-position rotary, similar in function to the Ikari sticks, that had push-to-fire.

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