HELP: Reversed X-Axis on Trackball?!?

[njchan]

I have a Happs Trackball with PS/2 interface PCB.

I've got it working in Windows for the most part ... only problem is the x-axis is reversed for some reason.  Meaning ...

when I move the ball up and down the cursor moves up and down ...

but when I move the ball left, the cursor goes right ?!?!  wtf?

and when I move the ball right, the cursor goes left ?!?!

anyone know how to fix this?  I tried reversing the connector on the trackball to PS/2 interface, but that didn't do anything.

any ideas?

[Rocky]

You need to swap a couple of pins on the Happs optical board.

[Mark70]

If you followed the instructions on the Optipac site, they're backwards.  They say where to connect the wire by colour for a happ trackball.  I followed it too and had the same results.  Just swap the x wires and the y wires.

Either that or you installed the track ball with the arrow that points to the monitor the wrong direction.

[TOK]

You mounted the trackball backwards. Flip it around.

[seanp]

You mounted the trackball backwards. Flip it around.

Nope...  turning the trackball around 180degrees will result in the up/down axis getting reversed.  Somehow the lef/right leads are backwards.  I made my own mouse hack for my trackball, and did this exact thing by accident.  switch the pins for left/right, and voila it works fine.  If BOTH axis were moving the wrong way, then turning it around would fix it.

"when I move the ball up and down the cursor moves up and down ...
but when I move the ball left, the cursor goes right ?!?!  wtf?
and when I move the ball right, the cursor goes left ?!?!

[TOK]

I misread his post. I actually misread it on 2 counts, because when he said PS-2, I assumed it with the one with the hardwired harness.
Sorry for the confusion.