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Calibrating joystick Poly800

2014-10-18 by ultragalore@...

I have a problem with the Poly after my HAWK800 / atomahawk kit. The joystick DCO seemed to be miscalibrated. I need to pull it half an inch down to have proper center value.

For those who are fiddling with this also, I managed to calibrate the Y-axis by putting a 50K variable resistor between pin 16 an 5 on the IC6 analog multiplexer IC:

Grit on Twitter: "Finally managed to kill the @comtruise DCO drift on my #poly800 with this 50K resistor. Ehrm... is this a good thing? http://t.co/Gqh63Dp7N9"

Grit on Twitter: "Finally managed to kill the @comt...

Finally managed to kill the @comtruise DCO drift on my #poly800 with this 50K resistor. Ehrm... is this a good thing? pic.twitter.com/Gqh63Dp7N9

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Re: [korgpolyex] Calibrating joystick Poly800

2014-10-18 by Michael Hawkins

No, I think what you've done is a bad idea. There is a reason why your joystick is misbehaving and you need to find what it is rather than patch in additional components.

If you go to the files section for Poly-800 servicing you will see the schematics and also a great explanation of how the joystick electoronics works.

/Mike

On Saturday, October 18, 2014 5:26 AM, "ultragalore@... [korgpolyex]" <korgpolyex@yahoogroups.com> wrote: