Loosing Rudder Calibration

[MADe]

Any known causes for loosing rudder calibration mid log?

W7 64bit, DIY rudders with 8bit usb interface controller. The x and y axis on same controller hold cal, just the z axis not holding cal..........

[Skuzzy]

USB bus reset will cause it.  Power too low on the USB bus can cause it too.

[MADe]

Ok ty Skuzzy. Gives me something to investigate.

I only have 4 USB devices plugged, KB, mouse and 2, 3 axis game controllers, all USB ports have been selected not to power down to save power.
 

[Skuzzy]

Computers usually have two USB hubs in them, regardless of the number of ports.  Try moving the stick, which is having issues, to another port.  If you hit another hub, Windows will give you a message about installing a new device.

[MADe]

Mine shows 6 hubs.

I did 4 things.
1) Changed the gear ratio on my rudder peds from 3 to 1, to 4 to 1. The usb controller needs to use 60% of pot at a minimum, it did with the 3 to 1 ratio, but I made sure.

2) I disabled in device manager any hub that did not have something plugged into it.

3) In windows calibration, I reset to default, and then stopped, not actually calibrating in windows. I of course then recal'ed in AH. When I booted and logged today, the last game cal was still present. I almost always had to recal game every time I logged. I never used the default in windows before. Since I had not used the full travel range of the pots I always cal'ed in windows to achieve this. With the default setting I do not register the full travel area in the test box, but I get full travel measured in AH. Who knew.

4) I added a hard stop on peds so they always travel to the same end points at extreme travel range.

Lets see how long the cal holds now. he he

[MADe]

I have come to the conclusion that it is calibrating in windows and then the game. I have kept the same calibration now for many boots and logs. Instead of calibrating in windows, I just choose the default calibration, then do an actual separate axis calibration in game. It has stuck.

Doing an actual calibration in both windows and game seems to cause some kind of conflict. Just an FYI for whomever.