pxt-calliope/docs/projects/light-level-meter.md
Galen Nickel eae6e5a6be
Edit 'tools' projects (#1220)
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2018-09-12 21:12:19 -07:00

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# Light Level Meter
Use this program to graph the light level.
Press ``A`` to scroll the value on the screen.
```blocks
let reading = 0
basic.forever(() => {
reading = input.lightLevel()
led.plotBarGraph(
reading,
255
)
if (input.buttonIsPressed(Button.A)) {
basic.showNumber(reading)
}
})
```