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Note
This is a web-version of a tutorial chapter embedded right into the XOD IDE.
To get a better learning experience we recommend to install the
desktop IDE or start the
browser-based IDE, and you’ll see the same tutorial there.
Potentiometer
The potentiometer reads an analog value from the hardware port and outputs a normalized result in the range from 0.0 to 1.0, depending on the angle of the knob.
It brings an easy solution to control LEDs, servos, and system coefficients.
Circuit #
↓ Download as a Fritzing project
Exercise #
Let’s control the brightness of the LED with a potentiometer.
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Connect a potentiometer to the Arduino board according to the scheme.
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Set the
PORTpin value on thepotnode toA0because it’s connected to the analog board port A0. -
Link the
potnodeVALpin to theLUMpin on thelednode. -
Upload your patch.
Rotate the knob and see how the LED reacts to it. Cool, eh?