I want to measure the position of a potentiometer (or another variable resistor) using one of the maestro channels. The manual gives an example of how to wire this: https://www.pololu.com/docs/0J40/7.b The example in the manual uses the regulated 5Vout pin on the board to supply the input.
However, I was wondering whether it is possible to use the pins that supply voltage to the servos to supply power. I am powering the servos with a 4 AA battery pack (i.e. max 6V). The image below depicts the setup I have in mind. The maximum voltage would be about 6V, with a minimal resistance of 1kOhm, this would result in a current of 6mA. Would this be acceptable for the signal line?