pointlights example and presentation for Interactivity course
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float brightness = 0; // our main variable for setting the brightness of the LED
const int ledPin = 9; // we use pin 9 for PWM
const int sensorPin = 4; // we use pin D4 for the button
int buttonState = 0;
float counter = 0;
// the ratio between counter increment and fade should be tweaked
float counter_inc = 1.0;
float counter_fade = 0.99;
int counter_threshold = 90;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
pinMode(ledPin, OUTPUT);
pinMode(sensorPin, INPUT);
}
void loop() {
buttonState = !digitalRead(sensorPin);
// digitalWrite(ledPin,buttonState); // don't do this
Serial.println(counter);
// fading pattern that requires 'effort'
if (buttonState == HIGH) {
counter += counter_inc;
}
counter = counter*counter_fade;
if (counter > counter_threshold){
brightness ++;
// here you could also switchCase(myCase)
}
else {
brightness = brightness * 0.99;
}
brightness = constrain(brightness, 0, 255);
analogWrite(ledPin, brightness);
delay(5);
}