Not all arcade buttons are .187. I did get some "budget' buttons
from Dream Arcades that are .110... but, same difference, they
still make .110 female quick connects.
As far as the difference in encoders goes:
KE72 (from their website):
- 72 inputs (consider that for 4player you will most likely need at LEAST:
16 for the joysticks
20 for the buttons (6 for p1 and p2, 4 for p3 and p4) -- 22 if you use
7 buttons for p1 and p2
08 for the player start and coin buttons
07 buttons if you include pinball buttons (I am)
?? "maintenance buttons" -- ESC key, Pause key, etc
PCI mounting but no actualy PCI connection (means it's bigger
than the IPAC if you're NOT mounting it in a pc)
Need a socket connector for their header (don't know if this is
included, didn't look like it)
Potential trackball interface (KE-72-T version)
IPAC4:
- 56 inputs
- smaller form factor but you have to mount it yourself (I'm using
a few small screws from a hardware store plus some plastic spacers)
- screw-in type connector blocks included,
which means that you can connect stripped wire straight from your
microswitches and screw in to the IPAC without a connector.
- I'm not sure if the KE-72 has this or not, but the IPAC has
"Shift key" functionality ... if you hold down the player 1 start button,
you can press other buttons to simulate key presses for
"Enter", "Esc", "Tab", and so on. All of these can be custom-defined by
the setup program available from Ultimarc, but the IPAC already
comes loaded with defaults so you don't have to set it up if you
don't want to
Yeah, I'm biased towards the IPAC because I have one.