Build Your Own Arcade Controls Forum
Main => Main Forum => Topic started by: killbill on December 07, 2025, 03:57:44 pm
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Hi,
I have an older Turbo Twist 2 spinner and board from circa 2007. Everything works great, but I just picked up a U-Trak trackball and would like to use the same board interface for both.
I am looking at the Optiwiz 3 from Groovy Game Gear. Anybody know if I can hook up a U-trak to the Optiwiz 3 using just the stock trackball harness?
Posed a few question to Randy from GGG and never heard back. Thought I'd ask here.
Any help is truly appreciated. Thanks.
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I am looking at the Optiwiz 3 from Groovy Game Gear. Anybody know if I can hook up a U-trak to the Optiwiz 3 using just the stock trackball harness?
You'll need to rearrange the Dupont pins, but that's not difficult.
Put the four data lines in the UTrak Y-axis 1x4 Dupont housing.
Put the 5v lines in a 1x2 housing or two 1x1 housings and put the ground in a 1x1 housing.
- You might have some of these 1x1 or 1x2 housings on computer or breadboard jumpers.
- If you don't have any of them, put the 5v lines in the X-axis 1x4 housing (leave the two un-filled positions hanging over the PCB) and put the ground line on the ground pin without a housing.
Related thread with pinouts and suggested order of steps:
https://forum.arcadecontrols.com/index.php/topic,169793.msg1779749.html#msg1779749 (https://forum.arcadecontrols.com/index.php/topic,169793.msg1779749.html#msg1779749)
Scott