Can use a potentiometer?

Projects General Guidance
1

Hi everyone,

I want to read tension's valor of a battery with my arduino uno. I am asking myself, if I can use a potentiometer to read the battery's valor.

Thanks for your contribution

2

Do you mean battery voltage?

If the battery voltage is lower then Vcc (which is 5V on a Arduino Uno) you can connect it direct.

Otherwise I would use a resistor divider instead of a pot. Pot is more expensive and if you turn it wrong you can damage the port/Arduino.

3

My battery voltage is 48V, otherwise I can't connect directly to my Arduino.
I will think about the resistor divider

Thanks for the support septillion :wink:

4

I want to read tension's valor of a battery with my arduino uno. I am asking myself, if I can use a potentiometer to read the battery's valor.

Measure the pot wiper output until the pot is adjusted to ~5.0v, then connect the pot wiper to the arduino analog input pin.

5

I've used trimmer resistors for divider there cheap and can be changed to keep the voltage in range of the ADC I glue them after I set there range. A pot is very easy to change