I'm looking to read the servo position of an rc aircraft servo.
I'd like to be able to only monitor the position as the rc aircraft has its own controller to control the servos.
Would i have to take the input command from the radio and relay it back to the servo to read the position or will i be able to tap into the servo line and read the position after the signal has passed through?
Id really like to avoid taking apart the servos to tap into the wiper
thanks
Do you have to know the physical position of the servo?
Or would it be enough to know what value the receiver is sending to the servo?
A servo detects the position of the motor by reading the value of a pot. This is normally tied into the electronics of the servo so it is not always possible to tap into that potentiometer voltage.
If you read the signal being sent to the servo, this is a PPM (pulse position modulated) signal that you can read from the arduino but it is time consuming (in processing terms) to read it.