Created
November 13, 2016 08:09
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#include <Adafruit_NeoPixel.h> | |
#define PIN 1 | |
#define WAIT 40 | |
// pouzivame knihovnu Adafruit_NeoPixel pro komunikaci s diodou | |
Adafruit_NeoPixel strip = Adafruit_NeoPixel(1, PIN, NEO_GRB + NEO_KHZ800); | |
void setup() { | |
// Zakladni nastaveni diody | |
strip.begin(); | |
strip.setBrightness(255); | |
} | |
void loop() { | |
for(uint16_t j = 0; j < 256; j++) { // cyklus od 0 do 255, ktery postupne meni barvy | |
strip.setPixelColor(0, vypocet_barvy(j)); // zjisti barvu pomoci funkce vypocet_barvy a nastavi ji do diody | |
strip.show(); // rekne diode aby ukazala barvu | |
delay(WAIT); // cekani 40 milisekund | |
} | |
} | |
// tohle je nejaka vec, ktera pocita barvu :) | |
// Input a value 0 to 255 to get a color value. | |
// The colours are a transition r - g - b - back to r. | |
uint32_t vypocet_barvy(byte WheelPos) { | |
if(WheelPos < 85) { | |
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); | |
} else if(WheelPos < 170) { | |
WheelPos -= 85; | |
return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); | |
} else { | |
WheelPos -= 170; | |
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); | |
} | |
} |
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