diff options
Diffstat (limited to 'libraries/Esplora/Beginners/EsploraLightCalibrator/EsploraLightCalibrator.ino')
-rw-r--r-- | libraries/Esplora/Beginners/EsploraLightCalibrator/EsploraLightCalibrator.ino | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/libraries/Esplora/Beginners/EsploraLightCalibrator/EsploraLightCalibrator.ino b/libraries/Esplora/Beginners/EsploraLightCalibrator/EsploraLightCalibrator.ino deleted file mode 100644 index c3eaff4..0000000 --- a/libraries/Esplora/Beginners/EsploraLightCalibrator/EsploraLightCalibrator.ino +++ /dev/null @@ -1,91 +0,0 @@ -/* - Esplora Led calibration - - This sketch shows you how to read and calibrate the light sensor. - Because light levels vary from one location to another, you need to calibrate the - sensor for each location. To do this, you read the sensor for a few seconds, - and save the highest and lowest readings as maximum and minimum. - Then, when you're using the sensor's reading (for example, to set the brightness - of the LED), you map the sensor's reading to a range between the minimum - and the maximum. - - Created on 22 Dec 2012 - by Tom Igoe - - This example is in the public domain. - */ - -#include <Esplora.h> - -// variables: -int lightMin = 1023; // minimum sensor value -int lightMax = 0; // maximum sensor value -boolean calibrated = false; // whether the sensor's been calibrated yet - -void setup() { - // initialize the serial communication: - Serial.begin(9600); - - // print an intial message - Serial.println("To calibrate the light sensor, press and hold Switch 1"); -} - -void loop() { - // if switch 1 is pressed, go to the calibration function again: - if (Esplora.readButton(1) == LOW) { - calibrate(); - } - // read the sensor into a variable: - int light = Esplora.readLightSensor(); - - // map the light level to a brightness level for the LED - // using the calibration min and max: - int brightness = map(light, lightMin, lightMax, 0, 255); - // limit the brightness to a range from 0 to 255: - brightness = constrain(brightness, 0, 255); - // write the brightness to the blue LED. - Esplora.writeBlue(brightness); - - // if the calibration's been done, show the sensor and brightness - // levels in the serial monitor: - if (calibrated == true) { - // print the light sensor levels and the LED levels (to see what's going on): - Serial.print("light sensor level: "); - Serial.print(light); - Serial.print(" blue brightness: "); - Serial.println(brightness); - } - // add a delay to keep the LED from flickering: - delay(10); -} - -void calibrate() { - // tell the user what do to using the serial monitor: - Serial.println("While holding switch 1, shine a light on the light sensor, then cover it."); - - // calibrate while switch 1 is pressed: - while(Esplora.readButton(1) == LOW) { - // read the sensor value: - int light = Esplora.readLightSensor(); - - // record the maximum sensor value: - if (light > lightMax) { - lightMax = light; - } - - // record the minimum sensor value: - if (light < lightMin) { - lightMin = light; - } - // note that you're calibrated, for future reference: - calibrated = true; - } -} - - - - - - - - |