k.) Cancel out of the calibration routine and close down the CCP.
l.) Disconnect the Cougar and re-attach the Cougar grip. Don't bother putting the base back on yet.
m.) Reconnect the Cougar.
Ok that's the U2nxt electically centred roughly. It won't be centred exactly because the off centred weight of the Cougar grip when connected will change the centre position, and the mod itself may not be centred. But you can always revisit the electrical centering later when you have the NXT physically centred, if you want to achieve that magical 323 value with the grip attached.
Stage 2.) Perform a manual calibration, and analyse the calibration.ccf data
a.) Well, just as the title suggests, perform a manual calibration with just the stick connected. Save the data as it suggests, in the default calibration.ccf file, and press the Apply button.
b.) Close down the CCP and with Notepad or any other text editor, open up the Calibration.ccf file. By default it will be located here: C:\Program Files\HOTAS\calib\calibration.ccf
You will see something like this:
[Calibration]
0=23162,34812,48046
1=19392,35818,44752
The "Calibrating your Cougar" document tells us that the 0 = line is the Joystick X axis data (Left, Centre, Right physical positions) and the 1 = line is the Joystick Y axis data (Forwards, Centre, Backwards physical positions).
Let's look at the X - axis first. I'm going to round off the numbers to just 3 digits, which is what the RAW axis data actually shows. 0=232,348,480
So:
When the stick is over to the left (XL), I get 232
When the stick is centred (XC), I get 348
When the stick is over to the right (XR), I get 480
The centre position should be halfway between XL and XR, ie. at: (XR - XL)/2 + XL
which in our case is: (480 - 232)/2 + 232 = 356
The stick though is centering at 348, and a lower value than 356 means that the stick is physically leaning over to the left.
Similarly with the Y axis:
1=194,358,448
When the stick is forwards (YF), I get 194
When the stick is centred (YC), I get 358
When the stick is back (YB), I get 448
The centre position should be halfway between YF and YB, ie. at: (YB - YF)/2 + YF
which in our case is: (448 - 194)/2 + 194 = 321
The stick though is centering at 358, and a higher value than 321 means
that the stick is physically leaning backwards.
Armed with this knowledge, we can physically centre the stick then using the RAW axis data as a guide.
Stage 3.) Centre the stick physically
a.) Disconnect the Cougar, remove the grip, and reconnect the Cougar.
b.) Turn the Cougar upside down, open up the CCP and go to the manual calibration routine.