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Typically, what I have done is to swap port2 wheel and port2 x-axis (assuming that you don't care about the wheel value). This is pretty easy to do. Just take the bottom of the joystick off and move the wires around. There are quick disconnects onto the potentionmeters, so you don't even have to solder anything. Now, if you want port4 x-axis as well, that's a little harder. If you don't care about, say, port3 y-axis, you could build a crossover cable to swap those values... Last ditch effort, in software, you could loop the value back into the BASIC byte (which controls the LEDs on the OI).
As for the idea of looping a PWM output back into an analog input, that should work, but I've never tried it. You might need to put a filter capacitor on there to smooth the pulses into a real analog voltage. I think that this should be allowed within the new custom circuit board thing, but I could be wrong...
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/* Daniel */
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