How can I change voltage instead of current?

[kolleamm]

TL;DR Summary

change voltage instead of current.

I have a micro controller that reads voltages from 0V to 5V
I did some tests on a potentiometer and I couldn't seem to get any readings of values in between. (range is 0-255 ,, 0 is for 0 volts and 255 is for 5V)
Therefore I'm assuming the voltage is staying the same as it turns but the current is changing.

How can I get the voltage to change instead of the current?

Thanks in advance

 

[phinds]

Summary: change voltage instead of current.

I have a controller that reads voltages from 0V to 5V
I did some tests on a potentiometer and I couldn't seem to get any readings of values in between. (range is 0-255 ,, 0 is for 0 volts and 255 is for 5V)
Therefore I'm assuming the voltage is staying the same as it turns but the current is changing.

How can I get the voltage to change instead of the current?

Thanks in advance

It's not clear what your setup is. This "controller" is a power supply or a meter? You say it "reads" but maybe you mean it produces?

 

[kolleamm]

It's not clear what your setup is. This "controller" is a power supply or a meter? You say it "reads" but maybe you mean it produces?

My bad I meant a micro controller attached to a computer that reads input voltage values from it's pins.

 

[davenn]

My bad I meant a micro controller attached to a computer that reads input voltage values from it's pins.

OK, still very unclear
how about a schematic of your circuit, showing ALL component values
and what micro controller you are using

otherwise it is just a guessing game trying to figure out what you are trying to doDave

 

[russ_watters]

My bad I meant a micro controller attached to a computer that reads input voltage values from it's pins.

Reads input values from what? Is that device outputting a voltage or current signal? Typically you can change a voltage signal to a current signal by adding a resistor to the circuit...

 

[NascentOxygen]

I have a micro controller that reads voltages from 0V to 5V
I did some tests on a potentiometer and I couldn't seem to get any readings of values in between. (range is 0-255 ,, 0 is for 0 volts and 255 is for 5V)

The potentiometer has three terminals to solder to. It sounds like you connected to only two of these?

 

[berkeman]

My bad I meant a micro controller attached to a computer that reads input voltage values from it's pins.

Hook it up like this. The "clockwise" (CW) potentiometer pin should connect to 5V, and the CCW pin should connect to ground. The wiper goes to your ADC input pin on the microcontroller (uC). R2 and C1 are optional, but will help to steady the readings you get.

https://www.w9xt.com/img_1224968365_15498_1331504476.png

 

[kolleamm]

The potentiometer has three terminals to solder to. It sounds like you connected to only two of these?

You were right, I had to attach all three to the board and that fixed it. Thanks all