Recently I acquired a Vectrex system, love the vector graphics on it, but I only have one original controller.The original controllers are very expansive, so I need a cheaper route.
I need to get some SNES pads, so I can do a Vectrex mod on them. Requires a new PCB for it to work properly. I have the schematics and the only obstacle is the home made PCB.
I don't think you need to make a new PCB, solder all lines by hand (as i did on the SNES lookalike PC controller but simpler if you are going to use an SNES controller) First just solder the buttons directly to corresponding pins then simply explained just solder the 5v to up/down/left right then just use resistors to get the 3,4v for up and right.
The left an down is a tiny bit more difficult on the Vectrex, you have to use an resistor and an voltage regulator to get the negative volatage, it's easy to get your hands on some IC 7905 regulators and it's output is steady enough for the Vectrex and paired with a resistor I see no reason why it should not work.
I see no reason why you could not fit this into a SNES gamepad so no need to make your own PCB.
I would offer to build you one, but I don't like to build anything for a system I don't own to test on before shipping off :/
EDIT: Be sure to use a multimeter BEFORE testing your creation on your vectrex to avoid destroying it

PS: im off to bed
