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//from
//https://bikeshedeffect.weebly.com/arduino-piezo-sounds.html

/* insert sound code into setup to play once, main loop to repeat, or into sound() function to call when wanted (button push, etc...)// Speaker must be on pin 8, see setup here: http://www.arduino.cc/en/Tutorial/PlayMelody
*/

#include "pitches.h"  // must include open source pitches.h found online in libraries folder or make a new tab => https://docs.arduino.cc/built-in-examples/digital/toneMelody

void setup() {
  // do nothing

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/* Arduino.cc RGB Crossfade
 * https://www.arduino.cc/en/Tutorial/ColorCrossfader
 * Modified by Bobby with Custom Color Mixing
 * https://learn.sparkfun.com/tutorials/lilypad-protosnap-plus-activity-guide/3-custom-color-mixing
 
  Code for cross-fading 3 LEDs, red, green and blue (RGB)
  To create fades, you need to do two things:
   1. Describe the colors you want to be displayed
   2. List the order you want them to fade in

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#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif

#define PIN 6

// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:

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#include "FastLED.h"

// How many leds in your strip?
#define NUM_LEDS 8

// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806 define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 3
#define CLOCK_PIN 13

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// modified: May 10, 2018
// 
// testshapes demo for RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 32x64 RGB LED matrix.

// NOTE THIS CAN ONLY BE USED ON A MEGA! NOT ENOUGH RAM ON UNO!

#include <Adafruit_GFX.h>   // Core graphics library
#include <RGBmatrixPanel.h> // Hardware-specific library

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// testshapes demo for RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 32x64 RGB LED matrix.

// NOTE THIS CAN ONLY BE USED ON A MEGA! NOT ENOUGH RAM ON UNO!

#include <Adafruit_GFX.h>   // Core graphics library
#include <RGBmatrixPanel.h> // Hardware-specific library

#define CLK 11