245 lines
6.1 KiB
C++
245 lines
6.1 KiB
C++
/*
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Arduino and MPU6050 Accelerometer and Gyroscope Sensor Tutorial
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by Dejan, https://howtomechatronics.com
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*/
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#include <Wire.h>
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#include <FastLED.h>
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#include <MPU6050_light.h>
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#define LED_PIN 7
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byte mode = 2; // 0 for acceleration, 1 for fire, 2 for waterfall, 3 pride, 4 glitter, 5 off
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const byte NUM_MODES = 6;
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const byte debug = 3;
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const byte STRIPS = 6;
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const byte NUM_LEDS = 10;
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const byte FRAMES_PER_SECOND = 30;
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const float range = 0.5; //accelleration range in g
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const byte BRIGHTNESS = 50;
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const byte COOLING = 80;
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const byte SPARKING = 50;
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uint8_t gHue = 0;
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float accelerationHistory [STRIPS];
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MPU6050 mpu(Wire);
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CRGB leds[NUM_LEDS * STRIPS];
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CRGBPalette16 gPal;
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CRGB flagcolors[6] = {CRGB::Red, CRGB::DarkOrange, CRGB::Yellow, CRGB::DarkGreen, CRGB::Blue, CRGB::DarkViolet};
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const byte modeSwitchPin = 2;
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void setup() {
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Serial.begin(19200);
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//setup LEDs
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FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS*STRIPS).setCorrection( TypicalLEDStrip );
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FastLED.setBrightness( BRIGHTNESS );
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pinMode(modeSwitchPin, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(modeSwitchPin), setMode, RISING);
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for (int i = 0; i<STRIPS; i++) {
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accelerationHistory[i] = 1;
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}
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Wire.begin();
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byte status = mpu.begin();
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Serial.print(F("MPU6050 status: "));
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Serial.println(status);
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while(status!=0){ } // stop everything if could not connect to MPU6050
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Serial.println(F("Calculating offsets, do not move MPU6050"));
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delay(1000);
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mpu.calcOffsets(true,true); // gyro and accelero
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Serial.println("Done!\n");
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}
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float calculateOrientationData() {
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mpu.update();
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float accCombined = sqrt(pow(mpu.getAccX(), 2) + pow(mpu.getAccY(), 2) + pow(mpu.getAccZ(), 2));
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// Print the values on the serial monitor
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if (debug <= 1) {
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Serial.print(F("TEMPERATURE: "));Serial.println(mpu.getTemp());
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Serial.print(F("ACCELERO X: "));Serial.print(mpu.getAccX());
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Serial.print("\tY: ");Serial.print(mpu.getAccY());
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Serial.print("\tZ: ");Serial.println(mpu.getAccZ());
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Serial.print(F("GYRO X: "));Serial.print(mpu.getGyroX());
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Serial.print("\tY: ");Serial.print(mpu.getGyroY());
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Serial.print("\tZ: ");Serial.println(mpu.getGyroZ());
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Serial.print(F("ACC ANGLE X: "));Serial.print(mpu.getAccAngleX());
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Serial.print("\tY: ");Serial.println(mpu.getAccAngleY());
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Serial.print(F("ANGLE X: "));Serial.print(mpu.getAngleX());
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Serial.print("\tY: ");Serial.print(mpu.getAngleY());
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Serial.print("\tZ: ");Serial.println(mpu.getAngleZ());
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}
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if (debug <= 2) {
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Serial.print("ACC COMBINED: ");
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Serial.println(accCombined, 3);
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}
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return accCombined;
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}
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void drawAccelerationOnStrip(int strip, float acceleration){ // 0 1
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if (debug <= 2) {
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Serial.print("drawing strip ");
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Serial.print(strip);
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Serial.print("\t");
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Serial.print(acceleration, 4);
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Serial.print("\t");
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}
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int stripStart = NUM_LEDS * strip; // 10*0 0
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if (debug <= 2) {
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Serial.print(stripStart);
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Serial.print("\t");
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}
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int ledcutoff = stripStart + int((NUM_LEDS/(2*range))*acceleration - (NUM_LEDS/2)); // 0+(10/(2*0,5)*1-10/2) 5
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if (debug <= 2) {
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Serial.print(ledcutoff);
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Serial.print("\t");
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}
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int stripEnd = (NUM_LEDS * (strip + 1)) - 1; // (10*(0+1))-1 9
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if (debug <= 2) {
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Serial.println(stripEnd);
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}
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if ((ledcutoff < stripStart) || (ledcutoff > stripEnd)){
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for (int i = stripStart; i <= stripEnd; i++) {
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leds[i] = CRGB(0, 0, 64);
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}
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}
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else {
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for (int i = stripStart; i <= ledcutoff; i++) {
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leds[i] = CRGB(64, 0, 0);
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}
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for (int i = ledcutoff; i <= stripEnd; i++) {
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leds[i] = CRGB(0, 64, 0);
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}
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}
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}
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void enableLEDsOnAcceleration(float accCombined){
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// draw all stored accelerations
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for (int i = 0; i < STRIPS; i++){
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drawAccelerationOnStrip(i, accelerationHistory[i]);
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}
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//shift them to the front
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for (int i = 0; i < STRIPS-1; i++) {
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accelerationHistory[i] = accelerationHistory[i+1];
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}
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//add new entry at the end
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accelerationHistory[STRIPS-1] = accCombined;
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}
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void calculateFire(int strip){
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// Array of temperature readings at each simulation cell
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static byte heat[STRIPS][NUM_LEDS];
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// Step 1. Cool down every cell a little
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for( int i = 0; i < NUM_LEDS; i++) {
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heat[strip][i] = qsub8( heat[strip][i], random8(0, ((COOLING * 10) / NUM_LEDS) + 2));
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}
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// Step 2. Heat from each cell drifts 'up' and diffuses a little
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for( int k= NUM_LEDS - 1; k >= 2; k--) {
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heat[strip][k] = (heat[strip][k - 1] + heat[strip][k - 2] + heat[strip][k - 2] ) / 3;
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}
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// Step 3. Randomly ignite new 'sparks' of heat near the bottom
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if( random8() < SPARKING ) {
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int y = random8(7);
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heat[strip][y] = qadd8( heat[strip][y], random8(160,255) );
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}
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// Step 4. Map from heat cells to LED colors
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for( int j = 0; j < NUM_LEDS; j++) {
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// Scale the heat value from 0-255 down to 0-240
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// for best results with color palettes.
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byte colorindex = scale8( heat[strip][j], 240);
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CRGB color = ColorFromPalette( gPal, colorindex);
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int pixelnumber = (strip * NUM_LEDS) + j;
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leds[pixelnumber] = color;
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}
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}
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void drawFire(){
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if (mode == 1) {
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gPal = CRGBPalette16( CRGB::Black, CRGB::Red, CRGB::Yellow, CRGB::White);
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}
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else {
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gPal = CRGBPalette16( CRGB::Black, CRGB::Blue, CRGB::Aqua, CRGB::White);
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}
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for (int i = 0; i < STRIPS; i++){
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calculateFire(i);
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}
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}
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void drawPride(){
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for (int strip = 0; strip < STRIPS; strip++){
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CRGB color = flagcolors[strip];
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for( int j = 0; j < NUM_LEDS; j++) {
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int pixelnumber = (strip * NUM_LEDS) + j;
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leds[pixelnumber] = color;
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}
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}
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}
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void drawGlitter(){
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fadeToBlackBy( leds, STRIPS*NUM_LEDS, 10);
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int pos = random16(STRIPS*NUM_LEDS);
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leds[pos] += CHSV( gHue + random8(64), 200, 255);
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}
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void drawOff(){
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fadeToBlackBy( leds, STRIPS*NUM_LEDS, 10);
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}
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void setMode(){
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mode++;
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if (mode >= NUM_MODES) {
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mode = 0;
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}
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if (debug <= 3) {
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Serial.print("Blinkmode:\t");
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Serial.println(mode);
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}
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}
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void loop() {
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if (mode == 0) {
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// === Read acceleromter data === //
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float accCombined = calculateOrientationData();
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enableLEDsOnAcceleration(accCombined);
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}
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else if ((mode == 1) || (mode == 2)) {
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random16_add_entropy( random());
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drawFire();
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}
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else if (mode == 3) {
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drawPride();
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}
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else if (mode == 4) {
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drawGlitter();
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}
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else if (mode == 5) {
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drawOff();
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}
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FastLED.show();
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gHue++;
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FastLED.delay(1000 / FRAMES_PER_SECOND);
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}
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