SENSING SERVO POSITION USING POTENTIOMETER

Hi, I need to know the servo position using a potentiometer, not control it but know where it's at, Does any one happen to know how this could be done? Whats the logic, does this works

Thanks & Regards

The servo goes there you tell it to so don't you all ready know where it is?

Mark

It requires additional circuitry.

Open up the servo and attach an encoder wheel.
Add a sensor for the wheel.

Here’s one example: My Robot

holmes4:
don’t you all ready know where it is?

Not necessarily: it might be prevented from getting there for some reason, like carrying too much load.

One can tap the internal pot in the servo and read the voltage off the pot wiper. Note that the voltage across the pot in the servo may be only 2v.

servo-pot.jpg

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