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Circuit Writer pen for PCB traces vs Bus wire
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D_Harris:
There is some good info at the link near the bottom of this page:

http://www.lupinesystems.com/

Darren Harris
Staten Island, New York.
MonMotha:
As a note, if you want custom design services...I do that :)
runawayabc123:
Thanks for the suggestions so far. 

Circuit Writer pen is out. 

Since what I am doing is basically a bunch of switchs, I am going with a 1 layer design.  (I also didn't want to deal with tracers crossing over each other.)  I am running off of a 12 position switch.  (It took a while to find a strong enough DC switch paired to a relay with a coil that it would work with that would do enough for me.) 

More details to follow.  I am still waiting for my order from allied electronics to show up. 

I built a proof of concept, but now it is time for a 1st generation working prototype. 

I'll be posting more on this one.  But I warn you, it isn't cheap.  I have way too much into it now.  Failure is NOT an option.   :embarassed:  All because I wanted to play several light gun games without the hassle of switching jamma connectors. 
runawayabc123:
My order got lost in the mail or something... so next week until the replacement order parts show up. 

Updates then. 
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