Need help with Trackball to mouse hack

[Renegade1]

Hello Gents,

  I have an actual arcade trackball although I have no ideal who made it as the only markings are :

 S.T.C. Rotterdam

  22-0480

  Anyway it already has the breadboards with the wheel pickups already mounted and I would like to just reuse them if possible.  It uses dual pickups on each wheel mounted side by side and I hope this is ok, as the mouse hack would work with dual optical pickups.

   I have a pic of the wiring setup I made in paint  showing the wiring diagram on the stock breadboards and let me know if indeed I can use the original dual pickups with a mouse along with which wires hook up where.

  Again I have read the how to's but this trackball isn't like any I have seen. Also I haven't noticed any other trackballs with dual pickups (that doesn't mean much at my age though ;-)  ) So the breadboard doesn't look like any I have seen pics of.

 Anyway thanks guys and I do appreciate any help!

 Renegade

 mamedrivers   @   hotmail.com

[Renegade1]

 anyone?  

  Surely someone can help me get this thing figured out.

 Renegade

[SirPeale]

I'm guessing you do not have a digital camera so we can see this?

[OSCAR]

Based on your description and sketch, you most likely have a Suzo 'active low' trackball.

In order to interface this with a mouse, you will probably have to add some pull-up resistors between the +5V (pin 4) and the signal wires (pins 2 &3) on each optic board.  I believe Andy W. recommends 2.2k resistors on the Suzo trackballs for the pull-ups.

Other than that, your hack should follow http://mamewah.mameworld.net/mousehack.html almost exactly.

[Renegade1]

  I played around with my Cheap (and I do mean cheap) dig. camera and got a couple decent pics. Hopefully this will help  

 This is the front with the dual light pickups.

[Renegade1]

 And here is the back side.  (the pickups, not mine ;-)  )

 

[Blakey]

I think Oscar has it correct. The only difference between your tball and most is that the emitter/detector is two separate units compared to the combined one found on most mice and a lot of tballs.

The Suzo has 4 wires as well, +5V, gnd, +, -. Just like yours (in fact yours is made in Rotterdam. $5 says it's a Suzo too.)

Here's a help for the wiring to the mouse. MS ergo mouse.


And as mentioned, 2.2 KOhm resistors running from the 5V line to your signal lines (4 required) will convert it from active low to active high.

[Renegade1]

 
  O.K. I am going to try this I guess, so could someone verify something for me before I blow it up  

   Using my wiring schematic and blakey's pic  as reference's it goes something like this :

   Mine:

  pin 1 ground or pos ? (I take it pos due to teh "+" sign on the photo)

 pin 2 & 3 would have to be connected together and would be the wire to go to the mouse optical pick up wire (or according to Blakey's pic the yellow or green X/Y wire)

 pin 4 would be ground? or second mouse x/y wire?

  I guess I see the mouse optic would use 2 or 3 wires depending on the setup but I have 4 so I am trying to figure out in which order those 4 would wire up to the mouse.

  Using Blakeys pic as a reference I would appreciate the help ;-)

  Example

  Saying Like pin1 would be "+" or the  yellow X/Y wire in pic
                    Pin 2 would be "-"  or the blue X/y wire in pic
  etc.

   One last question I noticed in the pic that the +5v  middle hole isn't used, could it be used to actuall power the trackball optics? Or will I need to bring in another +5v supply from else where.

  Sorry for all the quesitons just don't want to fry my MoBo or PS/2 port.

 thanks guys!

 Renegade

  P.S. would I need to remove the resister already on the board also??

[SirPeale]

Trackball wiring is usually color coded.  Got some pics of that?

[Renegade1]

 
  No Peale I don't as  it didn't have any wiring when I got it.

  I figured that one of you smart gents could tell me what each pin did by my super efficent paint shop pic :-)

  I do understand the basics and by using Blakey's pic as a reference it gives me enough info to go off of.  As in the pic shows the yellow/red wires and I understand that would be were the original optical pick up would have been mounted, etc.  I just need to figure out what they are compartable to the trackball optics...

 Thanks Peale!
 
  Renegade

   

[Blakey]

Saw your post on alt.games.mame. Not getting enough love here?

Just pulled my new suzo apart and guess what? model 22-0435 has the same optics as yours, right down to the separate emitters and detectors.

So you can waltz on over to ultimarc and check out the wiring diagram there! Or I could tell you which is which I suppose.

Ok, looking at Mar28005.JPG and starting from the left, you have ground, signal, signal, 5V. (black, green, yellow, red)

On my pic the 5V points are empty, but that was before I put in leads to power the tball. I took both points off, one powers one optic and also goes through 2 resistors to the signal lines and the other does the same thing for the other optic.

As far as which is X/Y and pos/neg, you'll have to figure it out yourself. Connect the wires until you get it right, then solder/fit a multipin plug. In my pic the red/yellow pair is X, the blue/green is Y.

HTH.

[Renegade1]

 Blakey  I luv ya' man!  

 I know you gents get alot of requests here and I just don't like being a bother is all.

  Again THANK YOU!!  I appreciate the help very very much....

 Renegade

[Renegade1]

 One last quesiton blakey,  So is yours a active low or high ?

  Looking at this diagram

http://www.wicothesource.com/new2/pages/page89.htm

  and comparing it to my drawing I take it  it is already active high and I won't need to add the resisters correct?

 Again hugs to ya'!

   
 Renegade

[Blakey]

On my pic the 5V points are empty, but that was before I put in leads to power the tball. I took both points off, one powers one optic and also goes through 2 resistors to the signal lines and the other does the same thing for the other optic.

^^^ I used resistors, mine is active low.

If your circuit is the same as 29-0210, i.e. the 5v runs into the detectors as well, then yes, it's active high. Easiest way to find out is to hook it up to your mouse and see if it works. If it doesn't add resistors on all four signal lines and try again.