*Sommer Ferien Pass 2019

Die Arduino IDE, kann von hier gezogen werden
https://www.arduino.cc/

Arduino ist eine Hardware und Software Plattform, die den Einstieg in die Elektronik sowie der Programmierung erleichtert.
Dazu gibt es zum einen sehr viele Libray's, die genutzt werden können um Zum Beispiel LCD, LED'S, Tasten und soweiter nutzten zu können.
Zum anderen gibt es sehr viele Informationen im Netzt. In Form von Tutorials oder Dokumenationen. Es gibt auch zahlreiche Videos und Bilder.

WS2812B, sind RGB LED'S von den (fast) belibig viele aneinander gehangen werden kann.
Die LED'S gibt es in verschiedenen Varianten. Zum einen als Streifen, einzeln(als Pixel), als Sticks aber auch in der 5mm oder 8mm Variante. 

Hier kann, die Libray für die WS2812B LED'S runter geladen werden.
https://learn.adafruit.com/adafruit-neopixel-uberguide/arduino-library-use

Es gibt verschiedene Libray's.

Digispark, sind kleine Mikrokontroller Boards, die auf ein atTiny85 oder aber auch in der Pro Variante auf den mit 6 Pins mehr ausgestatetten atTiny84 basieren.
Diese Boards haben, statt 8kb nur noch ca 6 KB Flash, aber das reicht für viele Projekte.

Zum Beispiel, einer Ampel Steuerung, sie können sich als USB Tastatur oder Maus ausgeben.
	

Arduino mit DigiSpark zusammen benutzen:
Voreinstellungen -> Folgendes zu den Boardmanager-URLs hinzufügen
OK
Werkzeuge -> Boards -> Boardmanager
nach Digispark suchen
Digispark AVR Boards auswählen und "Installieren" drücken

Wemos D1 mini
  Unter Voreinstellung, zusätzlich Board, diese URL Eintragen
  https://github.com/espressif/arduino-esp32/blob/master/package.json

Im Unter Boardmanager, dann ESP8266 oder Wemos D1 mini eingeben und das Package welches angezeigt wird, Installieren.

Im Board Manager dann Wemos D1&R2 mini Auswählen.








Code von Joel
// A basic everyday NeoPixel strip test program.

// NEOPIXEL BEST PRACTICES for most reliable operation:
// - Add 1000 uF CAPACITOR between NeoPixel strip's + and - connections.
// - MINIMIZE WIRING LENGTH between microcontroller board and first pixel.
// - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR.
// - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS
//   connect GROUND (-) first, then +, then data.
// - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip,
//   a LOGIC-LEVEL CONVERTER on the data line is STRONGLY RECOMMENDED.
// (Skipping these may work OK on your workbench but can fail in the field)

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
 #include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN    D3

// How many NeoPixels are attached to the Arduino?
#define LED_COUNT 8

// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
// Argument 1 = Number of pixels in NeoPixel strip
// Argument 2 = Arduino pin number (most are valid)
// Argument 3 = Pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
//   NEO_RGBW    Pixels are wired for RGBW bitstream (NeoPixel RGBW products)


// setup() function -- runs once at startup --------------------------------

void setup() {
  // These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
  // Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  // END of Trinket-specific code.

  strip.begin();           // INITIALIZE NeoPixel strip object (REQUIRED)
  strip.show();            // Turn OFF all pixels ASAP
  strip.setBrightness(451000); // Set BRIGHTNESS to about 1/5 (max = 255)
}


// loop() function -- runs repeatedly as long as board is on ---------------

void loop() {
  // Fill along the length of the strip in various colors...
  colorWipe(strip.Color(149, 115,   1), 50); // Red
    delay(2500);  // Pause for a moment
 colorWipe(strip.Color(  0, 255,   0), 50); // Green
   delay(2500);  // Pause for a moment
 colorWipe(strip.Color(  0,   0, 255), 50); // Blue

  // Do a theater marquee effect in various colors...
  theaterChase(strip.Color(149, 115, 1), 100); // White, half brightness
  delay(1000);  // Pause for a moment
  theaterChase(strip.Color(149, 255, 255),100); // Red, half brightness
    delay(1000);  // Pause for a moment
  theaterChase(strip.Color(149, 199, 255), 100); // Blue, half brightness
    delay(1000);  // Pause for a moment
  theaterChase(strip.Color(149, 167, 100), 100); // Green, half brightness
  delay(1000);  // Pause for a moment
  theaterChase(strip.Color(149, 139, 75), 100); // Neo Yellow, half brightness
    delay(1000);  // Pause for a moment
  theaterChase(strip.Color(149, 50, 50), 100); // Purple, half brightness
  delay(1000);  // Pause for a moment
  rainbow(5);             // Flowing rainbow cycle along the whole strip
  //theaterChaseRainbow(75); // Rainbow-enhanced theaterChase variant
}


// Some functions of our own for creating animated effects -----------------

// Fill strip pixels one after another with a color. Strip is NOT cleared
// first; anything there will be covered pixel by pixel. Pass in color
// (as a single 'packed' 32-bit value, which you can get by calling
// strip.Color(red, green, blue) as shown in the loop() function above),
// and a delay time (in milliseconds) between pixels.
void colorWipe(uint32_t color, int wait) {
  for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
    strip.setPixelColor(i, color);         //  Set pixel's color (in RAM)
    strip.show();                          //  Update strip to match
    delay(wait);                           //  Pause for a moment
  }
}

// Theater-marquee-style chasing lights. Pass in a color (32-bit value,
// a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms)
// between frames.
void theaterChase(uint32_t color, int wait) {
  for(int a=0; a<10; a++) {  // Repeat 10 times...
    for(int b=0; b<3; b++) { //  'b' counts from 0 to 2...
      strip.clear();         //   Set all pixels in RAM to 0 (off)
      // 'c' counts up from 'b' to end of strip in steps of 3...
      for(int c=b; c<strip.numPixels(); c += 3) {
        strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
      }
      strip.show(); // Update strip with new contents
      delay(wait);  // Pause for a moment
    }
  }
}

// Rainbow cycle along whole strip. Pass delay time (in ms) between frames.
void rainbow(int wait) {
  // Hue of first pixel runs 5 complete loops through the color wheel.
  // Color wheel has a range of 65536 but it's OK if we roll over, so
  // just count from 0 to 5*65536. Adding 256 to firstPixelHue each time
  // means we'll make 5*65536/256 = 1280 passes through this outer loop:
  for(long firstPixelHue = 0; firstPixelHue < 5*65536; firstPixelHue += 256) {
    for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
      // Offset pixel hue by an amount to make one full revolution of the
      // color wheel (range of 65536) along the length of the strip
      // (strip.numPixels() steps):
      int pixelHue = firstPixelHue + (i * 65536L / strip.numPixels());
      // strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
      // optionally add saturation and value (brightness) (each 0 to 255).
      // Here we're using just the single-argument hue variant. The result
      // is passed through strip.gamma32() to provide 'truer' colors
      // before assigning to each pixel:
      strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
    }
    strip.show(); // Update strip with new contents
    delay(wait);  // Pause for a moment
  }
}

// Rainbow-enhanced theater marquee. Pass delay time (in ms) between frames.
void theaterChaseRainbow(int wait) {
  int firstPixelHue = 0;     // First pixel starts at red (hue 0)
  for(int a=0; a<30; a++) {  // Repeat 15 times...
    for(int b=0; b<3; b++) { //  'b' counts from 0 to 2...
      strip.clear();         //   Set all pixels in RAM to 0 (off)
      // 'c' counts up from 'b' to end of strip in increments of 3...
      for(int c=b; c<strip.numPixels(); c += 3) {
        // hue of pixel 'c' is offset by an amount to make one full
        // revolution of the color wheel (range 65536) along the length
        // of the strip (strip.numPixels() steps):
        int      hue   = firstPixelHue + c * 65536L / strip.numPixels();
        uint32_t color = strip.gamma32(strip.ColorHSV(hue)); // hue -> RGB
        strip.setPixelColor(c, color); // Set pixel 'c' to value 'color'
      }
      strip.show();                // Update strip with new contents
      delay(wait);                 // Pause for a moment
      firstPixelHue += 65536 / 90; // One cycle of color wheel over 90 frames
    }
  }
}





Code von ____


====================
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
 #include <avr/power.h>
#endif
#define LED_PIN    D3
#define LED_COUNT 8
Adafruit_NeoPixel pixels(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  #if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
  clock_prescale_set(clock_div_1);
#endif
  rainbow(10);
  pixels.begin();
}

void loop() {
   ALL_LED(pixels.Color(random(255),random(255),random(255)));
   delay(30);
   ALL_LED(0);
   delay(30);
   
}

void ALL_LED(uint32_t color) {
  for (int i=0; i < 8; i++)
   {
     pixels.setPixelColor(i, color);
   }
   pixels.show();
  
}

Code von Ron

====================