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Originally Posted by Joe Ross
There is another reason why 5k pots won't work, though. There is circuitry in the OI to detect when the joysticks are unplugged. This circuitry depends on 100k pots. It is necessary so that when you unplug the joysticks, the robot doesn't fly backwards.
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Once again, are you sure? This is merely speculation, but I would think that the circuitry would detect when the current flow through a particular potentiometer is below .05mA (5V / 100kohm), so it would know when the joystick is unplugged. A 5k pot would draw more current, and I can't imagine that the circuitry is designed to send a signal of 127 to the RC when there is most definitely something plugged into the port. I wouldn't be surprised if a 250k pot didn't work, but a 5k? I disbelieve.