c.) Goto stages 2 and 4 and note the values you now read for the X and Y centres. Obviously they will be different to the values we read before without the grip attached.
Recall what we want to do.
For the X axis I want to adjust the centre position from a value of 348 to 356, or in other words I want to increase the X axis RAW data by (356 - 348) = 8.
d.) So take the current X axis value, let's say we're now reading 320, and adjust the X centering (following IJ's instructions) so that you now read 320 + 8 = 328. Tighten the X axis locking screw.
For the Y axis I want to adjust the centre position from a value of 358 to 321, or in other words I want to decrease the Y axis RAW data by (358 - 321) = 37.
e.) In a similar way then, take the current Y axis value, let's say we're now reading 350, and adjust the Y centering (following IJ's instructions) so that you now read 350 - 37 = 313. Tighten the Y axis locking screw.
f.) Cancel out of the calibration routine and close down the CCP.
g.) Disconnect the Cougar, put the base back on if you want and re-attach the Cougar grip, and throttle/rudders.
h.) Reconnect the Cougar, open up the CCP and perform a full manual calibration and save it.
You should be good to go now, with a U2nxt modified Cougar that's physically centred and roughly electrically centred. It really isn't imperative that the halls are exactly electrically centred, so long as the extreme values don't clip at 0 or 647 before the physical limits are reached. You can if you want of course use the same technique to measure where the centre values are now with the grip attached, see what they are without the grip attached, and adjust the hall sensors accordingly if you want to get closer to 323. But so long as the centre values in the .ccf file are roughly centred compared to the other values on the 0= and 1= calibration lines, that's all that really matters.
Cheers,
James "Nutty" Hallows
__________________
Recall what we want to do.
For the X axis I want to adjust the centre position from a value of 348 to 356, or in other words I want to increase the X axis RAW data by (356 -
d.) So take the current X axis value, let's say we're now reading 320, and adjust the X centering (following IJ's instructions) so that you now read 320 + 8 = 328. Tighten the X axis locking screw.
For the Y axis I want to adjust the centre position from a value of 358 to 321, or in other words I want to decrease the Y axis RAW data by (358 -
e.) In a similar way then, take the current Y axis value, let's say we're now reading 350, and adjust the Y centering (following IJ's instructions) so that you now read 350 -
f.) Cancel out of the calibration routine and close down the CCP.
g.) Disconnect the Cougar, put the base back on if you want and re-
h.) Reconnect the Cougar, open up the CCP and perform a full manual calibration and save it.
You should be good to go now, with a U2nxt modified Cougar that's physically centred and roughly electrically centred. It really isn't imperative that the halls are exactly electrically centred, so long as the extreme values don't clip at 0 or 647 before the physical limits are reached. You can if you want of course use the same technique to measure where the centre values are now with the grip attached, see what they are without the grip attached, and adjust the hall sensors accordingly if you want to get closer to 323. But so long as the centre values in the .ccf file are roughly centred compared to the other values on the 0= and 1= calibration lines, that's all that really matters.
Cheers,
James "Nutty" Hallows
__________________
A Word About The Cougar Axis Calibration
I highly recommend that you choose Manual Calibration now that you have the high quality U2nxt gimbals and hall sensors installed in your Cougar. You now have ball bearings in your gimbals as well as your hall sensors which for all practical purposes eliminates the wear on these parts. A manual calibration, once done and saved, will be good for a very long time!
- Cubby
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