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| const byte dim_curve[] = {
0, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6,
6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11,
11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15,
15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 20,
20, 20, 21, 21, 22, 22, 22, 23, 23, 24, 24, 25, 25, 25, 26, 26,
27, 27, 28, 28, 29, 29, 30, 30, 31, 32, 32, 33, 33, 34, 35, 35,
36, 36, 37, 38, 38, 39, 40, 40, 41, 42, 43, 43, 44, 45, 46, 47,
48, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76, 78, 79, 81, 82,
83, 85, 86, 88, 90, 91, 93, 94, 96, 98, 99, 101, 103, 105, 107, 109,
110, 112, 114, 116, 118, 121, 123, 125, 127, 129, 132, 134, 136, 139, 141, 144,
146, 149, 151, 154, 157, 159, 162, 165, 168, 171, 174, 177, 180, 183, 186, 190,
193, 196, 200, 203, 207, 211, 214, 218, 222, 226, 230, 234, 238, 242, 248, 255,
};
const int buttonPin = 8;
const int sensorPin = 0; // pin the potmeter is attached too
const int ledPinR = 9; // pwm pin with red led
const int ledPinG = 10; // pwm pin with green led
const int ledPinB = 11; // pwm pin with blue led
int buttonPushCounter = 1; // Hoe vaak je de knop in moet
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button
int sensorVal = 0; // store the value coming from the sensor
int fadeVal = 0; // value that changes between 0-255
int fadeSpeed = 4; // 'speed' of fading
// getRGB function stores RGB values in this array
// use these values for the red, blue, green led.
int rgb_colors[3];
int hue;
int saturation;
int brightness;
void setup() {
pinMode(buttonPin, INPUT);
pinMode(ledPinR, OUTPUT);
pinMode(ledPinG, OUTPUT);
pinMode(ledPinB, OUTPUT);
}
void loop() {
sensorVal = analogRead(sensorPin);
buttonState = digitalRead(buttonPin);
if (buttonState != lastButtonState) {
if (buttonState == HIGH) {
buttonPushCounter++;
if(buttonPushCounter>1)
{ buttonPushCounter=0;
}
Serial.println("on");
Serial.print("number of button pushes:");
Serial.println(buttonPushCounter, DEC);
}
else
lastButtonState = buttonState;
//BRIGHTNESS
if(buttonState==1) brightness = map(sensorVal, 0, 1023, 128, 255);
else brightness = 0;
// fade from 0 - 255 and back with a certain speed
fadeVal = fadeVal + fadeSpeed; // change fadeVal by speed
fadeVal = constrain(fadeVal, 0, 255); // keep fadeVal between 0 and 255
if(fadeVal==255 || fadeVal==0) // change from up>down or down-up (negative/positive)
{ fadeSpeed = -fadeSpeed;
}
// set HSB values
hue = map(sensorVal,0, 1023,0, 359); // hue is a number between 0 and 360
saturation = 255; // saturation is a number between 0 - 255
brightness = fadeVal; // value is a number between 0 - 255
getRGB(hue,saturation,brightness,rgb_colors); // converts HSB to RGB
analogWrite(ledPinR, rgb_colors[0]); // red value in index 0 of rgb_colors array
analogWrite(ledPinG, rgb_colors[1]); // green value in index 1 of rgb_colors array
analogWrite(ledPinB, rgb_colors[2]); // blue value in index 2 of rgb_colors array
delay(20); // delay to slow down fading
}}
void getRGB(int hue, int sat, int val, int colors[3]) {
/* convert hue, saturation and brightness ( HSB/HSV ) to RGB
The dim_curve is used only on brightness/value and on saturation (inverted).
This looks the most natural.
*/
val = dim_curve[val];
sat = 255-dim_curve[255-sat];
int r;
int g;
int b;
int base;
if (sat == 0) { // Acromatic color (gray). Hue doesn't mind.
colors[0]=val;
colors[1]=val;
colors[2]=val;
} else {
base = ((255 - sat) * val)>>8;
switch(hue/60) {
case 0:
r = val;
g = (((val-base)*hue)/60)+base;
b = base;
break;
case 1:
r = (((val-base)*(60-(hue%60)))/60)+base;
g = val;
b = base;
break;
case 2:
r = base;
g = val;
b = (((val-base)*(hue%60))/60)+base;
break;
case 3:
r = base;
g = (((val-base)*(60-(hue%60)))/60)+base;
b = val;
break;
case 4:
r = (((val-base)*(hue%60))/60)+base;
g = base;
b = val;
break;
case 5:
r = val;
g = base;
b = (((val-base)*(60-(hue%60)))/60)+base;
break;
}
colors[0]=r;
colors[1]=g;
colors[2]=b;
}
} |