looking for a simple potentiometer cir interface with Pi;

[lilzz]

What's a simple analog potentiometer circuit that interfaced with the pi? DO I need a Ardino circuit?

[ame]

Searching for "raspberry pi potentiometer" on Google gets me this:
http://learn.adafruit.com/reading-a-ana ... i/overview

[Richard-TX]

It doesn't get muich simpler than this:

http://www.ebay.com/itm/1PC-New-AD-DA-C ... 2c71d20f9d


It even has it's own pot on board which you can disconnect and hook up your own.

$1.91 delivered.

I use these as a current detector.

[lilzz]

It doesn't get muich simpler than this:

http://www.ebay.com/itm/1PC-New-AD-DA-C ... 2c71d20f9d


It even has it's own pot on board which you can disconnect and hook up your own.

$1.91 delivered.

I use these as a current detector.

Is that mean I also need to get a Arduino board too?

[ame]

It doesn't get muich simpler than this:

http://www.ebay.com/itm/1PC-New-AD-DA-C ... 2c71d20f9d


It even has it's own pot on board which you can disconnect and hook up your own.

$1.91 delivered.

I use these as a current detector.

Is that mean I also need to get a Arduino board too?

No, you hook it up to the I2C interface on the GPIO pins.

[Richard-TX]

With the ADC board hooked up to the Rpi, the value read from the ADC will be relative position of the pot. There will be 255 steps from one stop to the other.

[pluggy]

The potentiometer outputs an analogue voltage and the Pi doesn't do analogue. The Arduino does do analogue, so you can use either an ADC board or an Arduino. With some devious coding and a few carefully chosen passive components you can bodge a pseudo analogue with just a digital device like the Pi, but if you're asking questions at this level on here, an ADC/Arduino is a lot easier.