what pins correspond to what inputs/outputs on potentiometer?

on the blue 10k potentiometers, which pins correspond to what inputs and outputs? there are two on the left and one on the right. thanks

on the blue 10k potentiometers, which pins correspond to what inputs and outputs? there are two on the left and one on the right. thanks

There are a lot of potentiometers of various colors, and the blue ones I've seen just have the three pins in a line (A, W, B).

But on a pot if you see 2 pins in one group, and one in the other, the two pins are the ends of the pot (A and B in common notation) and the lone pin is the wiper.

Get your multimeter out and measure :wink:

This is in the wrong forum; it has nothing to do with Arduino, the software.

A simple ohmmeter would answer this question. And by “simple” I mean a free-to-$5-Harbor Freight Special will do the job. You don’t need a $500 Fluke.

Consider the three pins on a pot. The outermost pins usually represent the endpoints of the travel, and the center one is the wiper.

thus, a pot with the arrangement

+--------------------------+
|    o  1           3   o  |
|          2  o            |
+--------------------------+

corresponds to the schematic symbol

1
|  
>
>
> <-----2
>
>
|
3

In the simplest universe of Arduino circuitry you would connect pin 1 to +Vcc (5V or 3.3, depending on your board).

Pin 2 connects to an ADC pin, such as A0, A1. A2…etc.

Pin 3 connects to ground.

Note that for Cortek M-series boards, the voltage on pin 2 must not exceed 1.0V. Read the specs for analog inputs for your chip.

@kwollner, do not cross-post. Threads merged.

flounder:
Note that for Cortek M-series boards, the voltage on pin 2 must not exceed 1.0V.

That's not so. As a specific example the input voltage on the STM32F103 can be anywhere between GND and Vref+. Vref+ can be up anything up the the supply voltage.