lamp198

// Simple strand test for Adafruit Dot Star RGB LED strip.
// This is a basic diagnostic tool, NOT a graphics demo...helps confirm
// correct wiring and tests each pixel's ability to display red, green
// and blue and to forward data down the line.  By limiting the number
// and color of LEDs, it's reasonably safe to power a couple meters off
// the Arduino's 5V pin.  DON'T try that with other code!

#include <Adafruit_DotStar.h>
// Because conditional #includes don't work w/Arduino sketches...
#include <SPI.h>         // COMMENT OUT THIS LINE FOR GEMMA OR TRINKET
//#include <avr/power.h> // ENABLE THIS LINE FOR GEMMA OR TRINKET

#define NUMPIXELS 60 // Number of LEDs in strip

// Here's how to control the LEDs from any two pins:
#define DATAPIN    2
#define CLOCKPIN   6
Adafruit_DotStar strip = Adafruit_DotStar(
  NUMPIXELS, DATAPIN, CLOCKPIN, DOTSTAR_BRG);
// The last parameter is optional -- this is the color data order of the
// DotStar strip, which has changed over time in different production runs.
// Your code just uses R,G,B colors, the library then reassigns as needed.
// Default is DOTSTAR_BRG, so change this if you have an earlier strip.

int height_1;
int height_2;

int c1_rand_1;
int c1_rand_2;
int c1_rand_3;

int c2_rand_1;
int c2_rand_2;
int c2_rand_3;

int c3_rand_1;
int c3_rand_2;
int c3_rand_3;

int i;
int j;
int k;

void setup() {

#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000L)
  clock_prescale_set(clock_div_1); // Enable 16 MHz on Trinket
#endif
  randomSeed(analogRead(0));
  height_1 = random(4,40);
  height_2 = random(height_1+5,55);
  //Serial.println(height_1);
  //Serial.println(height_2);
  
  c1_rand_1 = random(0,255);
  c1_rand_2 = random(0,255);
  c1_rand_3 = random(0,255);

  c2_rand_1 = random(0,255);
  c2_rand_2 = random(0,255);
  c2_rand_3 = random(0,255);

  c3_rand_1 = random(0,255);
  c3_rand_2 = random(0,255);
  c3_rand_3 = random(0,255);
  
  strip.begin(); // Initialize pins for output
  strip.setBrightness(128);
  strip.show();  // Turn all LEDs off ASAP

}

void loop() {

  for (i=0; i<height_1; i++) {
    strip.setPixelColor(i, c1_rand_1, c1_rand_2, c1_rand_3);
  }
  for (j=height_1; j<height_2; j++) {
    strip.setPixelColor(j, c2_rand_1, c2_rand_2, c2_rand_3);
  }
  for (k=height_2; k<NUMPIXELS; k++) {
    strip.setPixelColor(k, c3_rand_1, c3_rand_2, c3_rand_3);
  }
  strip.show();
  delay(20000);
}