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Hacking a Betson 3" Trackball

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SirPeale:

--- Quote from: GadgetGeek on February 04, 2004, 12:11:39 pm ---Wouldn't Oscar's pre-hacked mouse be a good solution here?
--- End quote ---

Sure it would.  And what fun would that be?  Not to mention that I already have the mouse, I should be able to do this pretty easily once I figure it out.

rampy:
Peale... I've done this before....

I used a radio shack molex to "preserve" the original molex...

there's an betson molex wire color scheme ancient thread here (i'm fishing for it now -- EDIT found->be sure to read all the way through as u_rebel had it wrongside right the first time) that explains which color wires go where...

do you have a pic of the mouse guts in question?  

Some ps/2 mouses are easier to hack than others...

what was the question again?

rampy

EDIT --->Dude... I think you have the wrong idea on how to "hack" a mouse...
You don't use the pinouts... you remove the IR headers by the light choppers and wire where those were to the X+, X- and Y+, Y- wires on the trackball... know what I mean vern?  Let me know if you need further explanation/help, I'll do my best... that first document you linked to is good, but I can see how it could confuse you with technical details that you may not necessarily need to perform the hack (no knock on the original author--- details are good... his guide is what I used to do mine!)

rampy:
A few more guides (you don't have to use a betson specific mouse hack guide...just be cognizant that hte wires will be different colors, but do basically the same thing)

I found mamewah's guide helpful too!

mameworld mouse hack

anitabill page

(I like to look at a lot of different examples and soak up the info to figure out how to accomplish stuff...)  I probably have pictures of a mouse hack on ubercade's site, but I bet they are fuzzy =P

good luck Peale!

rampy

SirPeale:

--- Quote from: rampy on February 04, 2004, 12:44:36 pm ---EDIT --->Dude... I think you have the wrong idea on how to "hack" a mouse...
--- End quote ---

Nah, I was trying something.  Since the data is the same all the way around, I thought you could just hook up a PS/2 cable and be off.  Guess there is more to the electronics part of it than I thought.

I think the only thing I'm not 100% clear on is how the power (NEG and +5V) are hooked up.  Does it go to the mouse PCB and then off to the trackball, or right to the trackball?

rampy:
I may be wrong, as I don't have an intimate knowledge of the ps/2 protocols involved.... but I don't think the data is the same all the way around... some sort of encoding needs to be done, lest a mouse would just be the IR txr/rx and no other electronics... but i fault you not for thinking outside the mouse, I applaud it... I was just trying to point you towards conventional mouse hacking wisdom...

Regarding the power supply... I used neg and +5v from my computer powersupply... one of the IDE power molex'es... to power the trackball's optics, (the mouse get's the power it needs from the ps/2 port...)  IIRC USB has 5 volt lines as well (right?! it's been a while since i last looked at this stuff) if you'd prefer...  I think you *can* try and tap +5v and neg from the mouse itself but I chose not to or didn't find a good steady canidate component to tap it from.

*shrug*

Good luck!

Rampy

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