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Author: TheKitty

Gemma/Gemma_M0_NeoPixel_Dress/Gemma_M0_NeoPixel_Dress.ino

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+// SPDX-FileCopyrightText: 2021 Irete Hamdani for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+//
+#include <FastLED.h>
+#include <Wire.h>
+#include "Adafruit_TCS34725.h"
+
+#if defined(FASTLED_VERSION) && FASTLED_VERSION > 3010001
+  #error "FastLED 3.10.2 has known compile issues with SAMD boards. Please downgrade to FastLED 3.10.1"
+#endif
+
+#define DATA_PIN   1
+#define LED_TYPE    WS2812B
+#define COLOR_ORDER GRB
+#define NUM_LEDS    180     // Change this to reflect the number of LEDs you have
+#define BRIGHTNESS  255     // Set Brightness here 255
+
+CRGB leds[NUM_LEDS];
+ 
+// color sensor
+// our RGB -> eye-recognized gamma color
+byte gammatable[256];
+//used to store color sensor received color
+uint16_t clear, red, green, blue;
+
+// color sensor
+Adafruit_TCS34725 tcs = Adafruit_TCS34725(TCS34725_INTEGRATIONTIME_50MS, TCS34725_GAIN_4X);
+
+void setup() {
+  delay(3000); // 3 second delay for recovery
+
+  // tell FastLED about the LED strip configuration
+  FastLED.addLeds<LED_TYPE,DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS)
+    .setCorrection(TypicalLEDStrip) // cpt-city palettes have different color balance
+    .setDither(BRIGHTNESS < 255);
+ 
+  // set master brightness control
+  FastLED.setBrightness(BRIGHTNESS);
+
+  tcs.begin();
+
+  // helps convert RGB colors to what humans see
+  for (int i=0; i<256; i++) {
+    float x = i;
+    x /= 255;
+    x = pow(x, 2.5);
+    x *= 255;
+      
+    gammatable[i] = x;      
+  }
+
+  for (int i=0; i<3; i++){ //this sequence flashes the first pixel three times none/white as a countdown to the color reading.
+    leds[16] = CRGB::Black; 
+    FastLED.show(); 
+    delay(1000);
+    leds[16] = CRGB::White; 
+    FastLED.show(); 
+    delay(500);
+  }
+
+  // turn on LED
+  tcs.setInterrupt(false);        
+  delay(60);  // takes 50ms to read 
+  
+  tcs.getRawData(&red, &green, &blue, &clear);
+
+  tcs.setInterrupt(true);  // turn off LED
+}
+
+void loop()
+{
+  // Figure out some basic hex code for visualization
+  uint32_t sum = red;
+  sum += green;
+  sum += blue;
+  //sum += clear; // clear contains RGB already so no need to re-add it
+  
+  float r, g, b;
+  r = red; r /= sum;
+  g = green; g /= sum;
+  b = blue; b /= sum;
+  r *= 256; g *= 256; b *= 256;
+  
+  CRGBPalette16 gTargetPalette (
+   CRGB (gammatable[(int)r], gammatable[(int)g], gammatable[(int)b]));
+  
+  colorwaves( leds, NUM_LEDS, gTargetPalette);//gCurrentPalette);
+ 
+  FastLED.show();
+  FastLED.delay(20);
+}
+ 
+// This function draws color waves with an ever-changing,
+// widely-varying set of parameters, using a color palette.
+void colorwaves( CRGB* ledarray, uint16_t numleds, CRGBPalette16& palette) 
+{
+  static uint16_t sPseudotime = 0;
+  static uint16_t sLastMillis = 0;
+  static uint16_t sHue16 = 0;
+ 
+  uint8_t sat8 = beatsin88( 87, 220, 250);
+  uint8_t brightdepth = beatsin88( 341, 96, 224);
+  uint16_t brightnessthetainc16 = beatsin88( 203, (25 * 256), (40 * 256));
+  uint8_t msmultiplier = beat8(147); //beatsin88(147, 23, 60); - creates a more dynamic pattern [IH]
+ 
+  uint16_t hue16 = sHue16;//gHue * 256;
+  uint16_t hueinc16 = beatsin88(113, 300, 1500);
+  
+  uint16_t ms = millis();
+  uint16_t deltams = ms - sLastMillis ;
+  sLastMillis  = ms;
+  sPseudotime += deltams * msmultiplier;
+  sHue16 += deltams * beatsin88( 400, 5,9);
+  uint16_t brightnesstheta16 = sPseudotime;
+  
+  for( uint16_t i = 0 ; i < numleds; i++) {
+    hue16 += hueinc16;
+    uint8_t hue8 = hue16 / 256;
+    uint16_t h16_128 = hue16 >> 7;
+    if( h16_128 & 0x100) {
+      hue8 = 255 - (h16_128 >> 1);
+    } else {
+      hue8 = h16_128 >> 1;
+    }
+ 
+    brightnesstheta16  += brightnessthetainc16;
+    uint16_t b16 = sin16( brightnesstheta16  ) + 32768;
+ 
+    uint16_t bri16 = (uint32_t)((uint32_t)b16 * (uint32_t)b16) / 65536;
+    uint8_t bri8 = (uint32_t)(((uint32_t)bri16) * brightdepth) / 65536;
+    bri8 += (255 - brightdepth);
+    
+    uint8_t index = hue8;
+    //index = triwave8( index);
+    index = scale8( index, 240);
+ 
+    CRGB newcolor = ColorFromPalette( palette, index, bri8);
+ 
+    uint16_t pixelnumber = i;
+    pixelnumber = (numleds-1) - pixelnumber;
+    
+    nblend( ledarray[pixelnumber], newcolor, 128);
+  }
+}