PowerBook ADB Trackball as separated mouse?

[MrGasS27]

Hi everybody,

I own a PowerBook 145B with blown screen capacitors, the screws are stuck in display bezel and I'm tired to fight with it.

I noticed that PowerBook trackball is a Logitech ADB mouse, it's named Bullseye, when PowerBook worked I used to love this trackball, so I want to solder an ADB cable on it in order to use the TrackBall on my Performa 6200, IIci/si, Classic, PowerMac G3, Quadra 700 etc.

Under mouse flat connector there are 4 soldering point, but what is the pinout?

Somebody has hacked this Trackball?

Thank you.

 

[Trash80toHP_Mini]

HRM? Haven't done it yet, but planning to use a PowerBook 100 TrackBall in a similar fashion in a Duo2300c MoBo hack but that's a lot easier as it's a three contact board interconnect, IIRC. How many lines on the 145B's MoBo<->TB interconnect? If three, the extra one on the board is almost certainly for power switching.

Short and sweet: http://pinouts.ru/Slots/apple_adb_pinout.shtml

Found something interesting: a simple repair for a board with a "blown ADB controller" in the Wikipedia Article.

PWR and GND are easily buzzed, I wonder if the (assumption) PSW contact on the 145B TB PCB is pulled high(?) when you press a Power Button on the PB or an attached peripheral? So, if one of the two remaining contacts exhibits that behavior on power up, shut down or both, it's PSW, That would make the last remaining contact ADB.

WARNING: wait until an electron pusher chimes in with proper procedures before doing your testing! Someone who actually knows what they're doing may know of a way to test shorting PWR to PSW on your TB's PCB without blowing up ADB in the 50% likelihood of making that connection on your first try.

edit: hrmmm? Is there a tiny fuse between any of the four contacts and the ADB controller on the PCB?

 

[joethezombie]

http://www.industrialalchemy.org/articleview.php?item=307

This guy did just that with a 180c. He has this posted:

The serial data analyzer made it pretty easy to identify something as being an ADB signal. So I decided to hook it up to a trackball out of a Powerbook 180C ( I had one open at the time), to see if the signals on the ribbon cable were the same. Sure enough, they were, meaning that the 180C uses ADB for communication with its trackball. After some experimentation, I determined the pinouts for the connector on the trackball.

------------------------

|_ |__1__2___3__4__|_ |

------------------------

1: ADB data

2: ground

3: +5 volts

4: nc

With this information, I managed to hook the 180C's trackball up to a desktop Mac's ADB port and have it function normally. I would guess that the trackballs in most other 100 series Powerbooks use the same connector.

 

[Trash80toHP_Mini]

Sweet! [] ]'> Thanks for the linkage, now we've just gotta move yet another hack thread into hacks so it can be searched.

 

[MrGasS27]

Okay, I discovered pinout in the same website posted by joethezombie.

I'm planning to temporarily desolder flat port on Trackball board with hot air to discover alternative points, I want to solder an ADB cable on it.