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Re: R/C helicopters
About gyros driving PWm applications:
Typically speaking, you are right. In a model, a gyro hooks between the controller and the servo that requires the mixing. In the robot, however, you can use the PWM that would normally drive the servo to input into the robot controller (you may need to feed a 50% duty cycle into the gyro to simulate a neutral stick. Because gyros disengage when the stick moves from center, you may have to make it seem like a center stick all the time.)
Sparks
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