pxt-calliope/docs/projects/analog-pin-calibrator.md
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# Analog Pin Calibrator
Use this program to graph the analog value on pin ``P0``.
Press ``A`` to scroll the value on the screen.
```blocks
let reading = 0
basic.forever(() => {
reading = pins.analogReadPin(AnalogPin.P0)
led.plotBarGraph(
reading,
1023
)
if (input.buttonIsPressed(Button.A)) {
basic.showNumber(reading)
}
})
```