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Opti-wiz plus STC/Ultimarc trackball - RESOLVED
shock_:
Do I have a problem with my Opti-wiz?
(By the way, if this is all covered in the documentation I apologise; I cant Read The F.M. for the Opti-wiz because I can't find one online, and wasn't provided any paperwork with the spinner by my Local Aussie GGG Reseller.)
I've just wired an Ultimarc 2.25" trackball to the Opti-wiz stuck alongside my TurboTwist (version 1).
I've altered the spinner from X to Z axis, and once plugged in (USB), shows up as a HID mouse and behaves just like a scrollwheel. But nothing from the trackball.
I found this page which is actually troubleshooting for the Opti-pac, but had some multimeter-related suggestions at the very bottom which I tried on the Opti-wiz.
I am getting 5.06V between both sets of "G, +5" pins, and a variable voltage from around 0.5V to 5V (depending on the position of the spinner) between G and ZA or ZB, just like the Opti-pac help indicated. But nothing on the X or Y axes. Should there be something across G and XA , etc?
In case I'm barking completely up the wrong tree, here's how I've wired the trackball to the Opti-wiz. Anything stupid in there I've missed?
Any advice very welcome.
shock_:
After the overwhelming queue of responses visible above :P I've PMed Randy from GGG who thought the problem might be a lack of a pull-up resistor for this trackball, and advised checking with Andy from Ultimarc.
Andy got back to me today (on a weekend no less) and confirmed that a 2.2k pull-up resistor is probably required on each of the signal lines to play nicely with the Opti-wiz.
Tomorrow I will try to secure said ohms and will report back for the benefit of our children's children who will no doubt be attempting this unusual electronic alchemy in years to come.
Thanks Randy and Andy! Fingers crossed...
Fozzy The Bear:
--- Quote from: shock_ on November 04, 2007, 05:33:43 am ---Andy got back to me today (on a weekend no less) and confirmed that a 2.2k pull-up resistor is probably required on each of the signal lines to play nicely with the Opti-wiz.
--- End quote ---
Excellent response there, from both Andy at Ultimarc and Randy at Groovy Game Gear. That's the sort of quality customer service that you can always rely on from both of those guys. I'm always thouroughly impressed with their attitude. Even when it comes to getting each others products to work together like this.
:applaud: :applaud: :applaud:
Five Star Rating for both of them.
If only certain other companies behaved this way.
Best Regards,
Julian (Fozzy The Bear)
shock_:
Agreed - top notch vendors.
Sadly I have had no luck tonight getting the trackball to behave, however.
I've done one axis and tested, but no luck. Same wiring as before but now with the addition of one resistor bridging the X1 green to VCC red, and another from X2 yellow to the same red. When connected to the GGG and receiving power, the meter reports voltages between 0.1 and 2.4 (depending on where I swivel the ball) across GND and the X1 or X2, but still nothing apparent as far as Windows is concerned. The spinner on the same Opti-wiz is axis Z and is scrolling long web pages happily.
:'(
RandyT:
Try going down to a 2k resistor and let me know what happens.
RandyT