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#include <FastLED.h> | |
#include <Adafruit_NeoPixel.h> | |
#define NUM_LEDS 16 | |
#define DATA_PIN 3 | |
CRGB leds[NUM_LEDS]; | |
int | |
currentColor = 0, | |
lastColor = 0, | |
currentSaturation = 0, | |
lastSaturation = 0, | |
currentBrightness = 50, | |
lastBrightness = 0, | |
ledPosition = 0, | |
lastPosition = 0, | |
offPosition = 0; | |
void setup() { | |
FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS); | |
} | |
void loop() { | |
//start with Blue as Starting LED at position 2 | |
//set LEDs to their positions and increment | |
for (int i = 0; i<NUM_LEDS; i++){ | |
leds[i] = offPosition; | |
leds[i+1] = lastPosition; | |
leds[i+2] = ledPosition; | |
updateWheel(); //call update wheel function | |
currentColor++; //advance color each pass through the loop | |
if(currentColor==255){currentColor=0;} | |
} | |
} | |
void updateWheel() { | |
leds[offPosition] = CHSV(0,0,0); | |
leds[lastPosition] = CHSV(currentColor,currentSaturation,currentBrightness%50); | |
leds[ledPosition] = CHSV(currentColor,currentSaturation,currentBrightness); | |
FastLED.show(); | |
offPosition = lastPosition; | |
lastPosition = ledPosition; | |
ledPosition = (ledPosition + 1) % 256; | |
} |
not really sure about the relationship between the wheel update function and the for loop. i guess you would eventually code a millis() check in the main loop for the wheelUpdate? i was hoping to figure out how to advance the dot around the ring while cycling through the hue/color range, but do i need to organize it as a mode?
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there are errors but i'm not sure where to start with this.