Controlling a resistence with an arduino

Hello everyone! I'm in a bit of a pickle. I have very basic knowledge and electronics and I'm attempting to build a controller for a video camera. The whole thing will be done with an app talking to an arduino.

Is there a way to control the value of a resistance via an arduino from 0K to 20K. I guess this would be done with a transistor but like I said, I'm a beginner. Any clue?

thanks in advance

JD

Look for a potentiometer that is I2C or SPI controlled.

Look for a potentiometer that is I2C or SPI controlled.

That would be a digital potentiometer. :wink:

Can you tell us more about this potentiometer you are trying to mimic using Arduino? Where is this pot originally located and do you know what voltage is applied across it?

If it is a camera control it is likely to be a resistor chain that manual push buttons short out to register a press.

Sigh!

Yet another "XY problem".

I should be extremely surprised if a modern video camera had an actual variable resistor among its controls, so if the OP would care to explain what he actually wants to do , we might start to get somewhere.