Powering the Playstation interface
The Playstation console provides +3.5v and +7.6v power to the controllers. When you build a
parallel port interface you must provide that power from somewhere. The circuits presented
below are some suggestions.
If any of this doesn't make sense to you, find somebody to who it makes sense; and beg them
to help you!
Single Playstation controller
A single PSX controller, without force feedback, can be powered directly from the parallel
port. Simply add the following components to any of the interfaces:
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The connections in the diagram is in addition to the normal interface wiring. If all
this sounds confusing - build the PSX interface like it is shown on the DirectPad Pro page:
http://www.arcadecontrols.com/Mirrors/www.ziplabel.com/dpadpro/psx.html.
To enable force feedback (not yet supported by PPJoy) you need to provide 7.6v from somehwere.
A 9v battery will probably do fine. Don't use a 9v wall adapter - see below for wall adapters.
Multiple Playstation controllers
Multiple controllers need to be powered from an external power source like a 9 to 12 volt wall
adapter. Feed that into the diagram below, taken from the Megatap web page -
http://www.stndev.btinternet.co.uk/megatap.htm,
to provide the 3.5v and 7.6v.
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