Implement MSGEQ7 and include first pattern.

MSGEQ7 setup, include pattern that loops through color wheel while the
strip reaches past color wheel positon based on highest frequency from
Audio.

README.md

@@ -1,12 +1,14 @@
 # Arduino Neopixel
 
 Using an Arduino with a Neopixel RGB LED strip(60) to create patterns.
+Utilizes MSGEQ7 Graphic Equalizer Display Filter to seperate sound into 7 frequency ranges.
 
 ## Getting started
 
 Download latest Arduino environment(Link in Software)
 Connect Neopixel strip to 5v source(~3-4 Amp powersupply needed)
 Connect signal cable from strip to Arduino along with ground cable.
+Use proper schematics to wire Audio to MSGEQ7 to output to Arduino.
 Push script to Arduino board.
 
 ### Software

Scripts/NeoPixel.ino

@@ -1,15 +1,144 @@
 //Neopixel main script
 #include <Adafruit_NeoPixel.h>
 
-#define PIN 6
+#define PIN 6 //strip pin
+int analogPin=0; //A0 pin for reading frequency
+int strobePin=2; //Ask MSGEQ7 for data
+int resetPin=3; //End communication with MSGEQ7
+int spectrumValue[7]; //Array for frequencies
+int filter=80;
+int highest;
+int rotation=0;
+int rotationdelay=0;
+
+int pattern = 0;
+
 
 Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);
 
 void setup() {
+  Serial.begin(9600); //Debugging serial port
+  /**
+  pinMode setup for MSGEQ7
+  **/
+  pinMode(analogPin, INPUT);
+  pinMode(strobePin, OUTPUT);
+  pinMode(resetPin, OUTPUT);
+
+  digitalWrite(resetPin, LOW);
+  digitalWrite(strobePin, HIGH);
   strip.begin();
   strip.show();
 }
 
 void loop() {
+  switch(pattern){
+    case 0:
+    colorLoopProgression();
+    break;
+    case 1:
+      //placeholder
+      break;
+  }
+}
+
+  void colorLoopProgression(){
+    digitalWrite(resetPin, HIGH);
+    digitalWrite(resetPin, LOW);
+    for (int i=0;i<7;i++){
+      digitalWrite(strobePin, LOW);
+      delay(10);
+      spectrumValue[i]=analogRead(analogPin);
+      spectrumValue[i]=constrain(spectrumValue[i], filter, 1023);
+      spectrumValue[i]=map(spectrumValue[i], filter,1023,0,255);
+      Serial.print(spectrumValue[i]);
+      Serial.print(" ");
+      digitalWrite(strobePin, HIGH);
+    }
+    Serial.println();
+
+    highest =0;
+    for(int i=0; i<7; i++){
+      if(spectrumValue[i]>spectrumValue[highest]){
+        highest = i;
+      }
+    }
+    Serial.println(highest);
+    for(int i=30; i<60; i++){
+      if(i<30+(spectrumValue[highest]/9)){
+        int highestt=0;
+        if(highestt==0){
+          strip.setPixelColor(i, Wheel(rotation+(spectrumValue[highest]/6)+(highest*8)));
+        }
+        else if(highest==1){
+          strip.setPixelColor(i, strip.Color(spectrumValue[highest], (255-spectrumValue[highest])/2, 0));
+        }
+        else if(highest==2){
+          strip.setPixelColor(i, strip.Color(255-spectrumValue[highest], spectrumValue[highest], 0));
+        }
+        else if(highest==3){
+          strip.setPixelColor(i, strip.Color(0, spectrumValue[highest], 0));
+        }
+        else if(highest==4){
+          strip.setPixelColor(i, strip.Color(0, 0, spectrumValue[highest]));
+        }
+        else if(highest==5){
+          strip.setPixelColor(i, strip.Color(75, 0, 130));
+        }
+        else if(highest==6){
+          strip.setPixelColor(i, strip.Color(100,100,100));
+        }
 
+      }
+      else{
+        strip.setPixelColor(i, strip.Color(0,0,0));
+      }
+    }
+    for(int i=30; i>0; i--){
+      if(i>30-(spectrumValue[highest]/9)){
+        int highestt=0;
+        if(highestt==0){
+          strip.setPixelColor(i, Wheel(rotation+(spectrumValue[highest]/6)+(highest*8)));
+        }
+        else if(highest==1){
+          strip.setPixelColor(i, strip.Color(255, 127, 0));
+        }
+        else if(highest==2){
+          strip.setPixelColor(i, strip.Color(255, 255, 0));
+        }
+        else if(highest==3){
+          strip.setPixelColor(i, strip.Color(0, 255, 0));
+        }
+        else if(highest==4){
+          strip.setPixelColor(i, strip.Color(0, 0, 255));
+        }
+        else if(highest==5){
+          strip.setPixelColor(i, strip.Color(75, 0, 130));
+        }
+        else if(highest==6){
+          strip.setPixelColor(i, strip.Color(100,100,100));
+        }
+      }
+      else{
+        strip.setPixelColor(i, strip.Color(0,0,0));
+      }
+    }
+    if(rotationdelay>=1){
+      rotation++;
+      rotationdelay=0;
+    }
+    rotationdelay++;
+    strip.show();
+  }
+  uint32_t Wheel(byte WheelPos) {
+  WheelPos = 255 - WheelPos;
+  if(WheelPos < 85) {
+    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+  }
+  if(WheelPos < 170) {
+    WheelPos -= 85;
+    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+  }
+  WheelPos -= 170;
+  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
 }