ledPot

ledPot.ino

#include <Adafruit_NeoPixel.h>
#include <Bounce2.h>

#define LED_PIN 17
#define BUTTON_PIN 3
#define POT_PIN 14

#define NUM_LEDS 83

#define BRIGHTNESS 100

byte lastValue = 0;
byte mode = 0;

Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);
Bounce debouncer = Bounce(); 

uint32_t colors[] = {
  strip.Color(255, 0, 0),
  strip.Color(0, 255, 0),
  strip.Color(0, 0, 255),
  strip.Color(255, 0, 255),
  strip.Color(255, 255, 0),
  strip.Color(0, 255, 255),
  strip.Color(255, 255, 255),
  strip.Color(random(0,255), random(0,255), random(0,255))
};

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  debouncer.attach(BUTTON_PIN);
  debouncer.interval(20);
  Serial.begin(115200);
  strip.setBrightness(BRIGHTNESS);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

void loop() {
  debouncer.update();
  byte potValue = map(analogRead(POT_PIN), 0, 1023, 0, 83);
  
  if (debouncer.fell()) {
    colors[sizeof(colors)/4-1] = strip.Color(random(0,255), random(0,255), random(0,255));
    mode++;
    if (mode == sizeof(colors)/4) {
      mode = 0;
    }
    Serial.println(mode);
  }
  
  if (potValue != lastValue) {
    Serial.println(potValue);
    strip.clear();
    for (byte i=0; i < potValue; i++) {
      strip.setPixelColor(i, colors[mode]);
    }
    strip.show();
  }

  lastValue = potValue;

}