Windows 10 - What do the individual parts of the game controller calibration values in the registry represent?

Jim Harris 0

Greetings!

I am running Win-10 pro.

I have a Saitek X52 joystick game controller that has a problem with the "twist" (rudder) axis where it doesn't show the full range of values, and the "center" is offset to the left of center. (I replaced the rudder's potentiometer.)

I was eventually able to get the calibration tool to resolve the limited range issue, but it's still offset to the left which makes playing games like MSFS-2020 extremely difficult.

I discovered a site, (https://superuser.com/a/1699020), that describes both where, and what the values do - somewhat.

In my case, the relevant registry entry is:
(The affected axis is axis 5.)

[HKEY_CURRENT_USER\System\CurrentControlSet\Control\MediaProperties\PrivateProperties\DirectInput\VID_06A3&PID_075C\Calibration\0\Type\Axes\5]

. . . and the initial "calibration" value for axis 5 was:

"Calibration"=hex:69,01,00,00,15,02,00,00,c2,02,00,00

Note the values 69,01,00,00 - 15,02,00,00 - c2,02,00,00 which are supposedly arranged as min, center, max, and appear to show the centered value as slightly offset.

If I change the second group from "15,02,00,00" to "00,02,00,00" the control shows as centered, (more or less, but I still think it's slightly off to the left).

However if I change the second byte from the left from "02" to "00", (i.e. the second group becomes "00,00,00,00"), the centered value shows a tremendous offset to the right.

Question:

Since the calibration tool appears to make certain assumptions about the mechanically centered position of the controller, (and I might have to manually tweak these values to make my controller work the most effectively), is there someone who can tell me exactly what each byte value in each group represents?

Jeanine Zhang-MSFT 10,126 Reputation points Microsoft Vendor

2024-12-23T01:38:35.3833333+00:00

Here is winapi forum. Designed to deal with the issues related to win32 application development. According to your description, your issue is related to Saitek X52 joystick, I suggest you could contact the developers of the joystick to get better help.
Jim Harris 0 Reputation points

2024-12-25T01:57:56.8633333+00:00

Not so. I am asking about the results of the windows game controller calibration tool and the resultant registry values obtained. This is relevant regardless of the specific controller used.

I asked this on the Microsoft Windows support forum and they directed me here.
Jim Harris 0 Reputation points

2024-12-25T02:15:08.8733333+00:00

As mentioned in the title of this question, (What do the individual parts of the game controller calibration values in the registry represent?), I am not asking about the game controller itself, I am asking about the interpretation of the individual calibration values that the game controller calibration tool provides. (%SystemRoot%\System32\joy.cpl)

I originally asked this question over at the Microsoft Support forums, and they directed me here.

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Windows 10 - What do the individual parts of the game controller calibration values in the registry represent?

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