pxt-ev3/docs/tutorials/reflected-light-calibration.md
Galen Nickel 7e9cc791ec Some edits for the new sensor/motor examples (#901)
* Some edits for the new sensor/motor examples

* article typo

* dark and bright

* fix block styling

* I like 'on'

* more block styling
2019-09-02 04:20:42 -07:00

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Markdown

# Reflected light calibration
The ``||sensors:calibrateLight||`` blocks allows you to calibrate the reflected light of the color sensor in one block. At the time you run the block, move the sensor over a dark surface and a bright surface; then stop moving it.
```blocks
sensors.color3.onLightDetected(LightIntensityMode.Reflected, Light.Dark, function () {
brick.showString("dark", 2)
})
sensors.color3.onLightDetected(LightIntensityMode.Reflected, Light.Bright, function () {
brick.showString("bright", 2)
})
console.sendToScreen()
console.log("move color sensor")
console.log("over DARK and BRIGHT color")
console.log("and stop moving when done")
console.log("press ENTER when ready")
brick.buttonEnter.pauseUntil(ButtonEvent.Pressed)
sensors.color3.calibrateLight(LightIntensityMode.Reflected)
brick.showValue("dark", sensors.color3.threshold(Light.Dark), 4)
brick.showValue("bright", sensors.color3.threshold(Light.Bright), 5)
forever(function () {
brick.showValue("reflected light", sensors.color3.light(LightIntensityMode.Reflected), 1)
})
```