Hallo Uwe, vielen Dank für Deine Antwort. Ich habe die 5V nun versuchsweise von Vin auf 5V(ohne angeschlossenen USB-Stecker) gelegt, leider auch ohne Erfolg.
Es ist alles wie gehabt: Wenn ich Strom anlege, leuchten ein paar LEDs (immer die selben), mit oder ohne Datenleitung und egal was für eine Stromquelle ich anschließe (5V vom PC-Netzteil, 5V-Adapter oder nur per USB -> Arduino)
LED1, LED5 & LED8 = Rot
LED & LED6 = Grün
LED2, LED4 & LED7 = Aus
Vielleicht nutze ich auch die falschen Libraries oder man spricht diese Art von LEDs anders an?
Anbei noch die Sketches, welche ich momentan Probiert habe (FastLED-Beispiele):
#include "FastLED.h"
#define DATA_PIN 3
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
#define NUM_LEDS 8
#define BRIGHTNESS 96
CRGB leds[NUM_LEDS];
void setup() {
delay(3000); // initial delay of a few seconds is recommended
FastLED.addLeds<LED_TYPE,DATA_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip); // initializes LED strip
FastLED.setBrightness(BRIGHTNESS);// global brightness
}
// switches off all LEDs
void showProgramCleanUp(long delayTime) {
for (int i = 0; i < NUM_LEDS; ++i) {
leds[i] = CRGB::Black;
}
FastLED.show();
delay(delayTime);
}
// switches on all LEDs. Each LED is shown in random color.
// numIterations: indicates how often LEDs are switched on in random colors
// delayTime: indicates for how long LEDs are switched on.
void showProgramRandom(int numIterations, long delayTime) {
for (int iteration = 0; iteration < numIterations; ++iteration) {
for (int i = 0; i < NUM_LEDS; ++i) {
leds[i] = CHSV(random8(),255,255); // hue, saturation, value
}
FastLED.show();
delay(delayTime);
}
}
// Shifts a single pixel from the start of strip to the end.
// crgb: color of shifted pixel
// delayTime: indicates how long the pixel is shown on each LED
void showProgramShiftSinglePixel(CRGB crgb, long delayTime) {
for (int i = 0; i < NUM_LEDS; ++i) {
leds[i] = crgb;
FastLED.show();
delay(delayTime);
leds[i] = CRGB::Black;
}
}
// Shifts multiple pixel from the start of strip to the end. The color of each pixel is randomized.
// delayTime: indicates how long the pixels are shown on each LED
void showProgramShiftMultiPixel(long delayTime) {
for (int i = 0; i < NUM_LEDS; ++i) {
for (int j = i; j > 0; --j) {
leds[j] = leds[j-1];
}
CRGB newPixel = CHSV(random8(), 255, 255);
leds[0] = newPixel;
FastLED.show();
delay(delayTime);
}
}
// main program
void loop() {
showProgramCleanUp(2500); // clean up
showProgramRandom(100, 100); // show "random" program
showProgramCleanUp(2500); // clean up
showProgramRandom(10, 1000); // show "random" program
showProgramCleanUp(2500); // clean up
showProgramShiftSinglePixel(CRGB::Blue, 250); // show "shift single pixel program" with blue pixel
showProgramCleanUp(2500); // clean up
showProgramShiftSinglePixel(CRGB::Maroon, 100); // show "shift single pixel program" with maroon pixel
showProgramCleanUp(2500); // clean up
showProgramShiftMultiPixel(500); // show "shift multi pixel" program
showProgramCleanUp(2500); // clean up
showProgramShiftMultiPixel(50); // show "shift multi pixel" program
}
Sketch2:
#include <FastLED.h>
FASTLED_USING_NAMESPACE
// FastLED "100-lines-of-code" demo reel, showing just a few
// of the kinds of animation patterns you can quickly and easily
// compose using FastLED.
//
// This example also shows one easy way to define multiple
// animations patterns and have them automatically rotate.
//
// -Mark Kriegsman, December 2014
#if defined(FASTLED_VERSION) && (FASTLED_VERSION < 3001000)
#warning "Requires FastLED 3.1 or later; check github for latest code."
#endif
#define DATA_PIN 3
//#define CLK_PIN 4
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
#define NUM_LEDS 8
CRGB leds[NUM_LEDS];
#define BRIGHTNESS 96
#define FRAMES_PER_SECOND 120
void setup() {
delay(3000); // 3 second delay for recovery
// tell FastLED about the LED strip configuration
FastLED.addLeds<LED_TYPE,DATA_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
//FastLED.addLeds<LED_TYPE,DATA_PIN,CLK_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
// set master brightness control
FastLED.setBrightness(BRIGHTNESS);
}
// List of patterns to cycle through. Each is defined as a separate function below.
typedef void (*SimplePatternList[])();
SimplePatternList gPatterns = { rainbow, rainbowWithGlitter, confetti, sinelon, juggle, bpm };
uint8_t gCurrentPatternNumber = 0; // Index number of which pattern is current
uint8_t gHue = 0; // rotating "base color" used by many of the patterns
void loop()
{
// Call the current pattern function once, updating the 'leds' array
gPatterns[gCurrentPatternNumber]();
// send the 'leds' array out to the actual LED strip
FastLED.show();
// insert a delay to keep the framerate modest
FastLED.delay(1000/FRAMES_PER_SECOND);
// do some periodic updates
EVERY_N_MILLISECONDS( 20 ) { gHue++; } // slowly cycle the "base color" through the rainbow
EVERY_N_SECONDS( 10 ) { nextPattern(); } // change patterns periodically
}
#define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
void nextPattern()
{
// add one to the current pattern number, and wrap around at the end
gCurrentPatternNumber = (gCurrentPatternNumber + 1) % ARRAY_SIZE( gPatterns);
}
void rainbow()
{
// FastLED's built-in rainbow generator
fill_rainbow( leds, NUM_LEDS, gHue, 7);
}
void rainbowWithGlitter()
{
// built-in FastLED rainbow, plus some random sparkly glitter
rainbow();
addGlitter(80);
}
void addGlitter( fract8 chanceOfGlitter)
{
if( random8() < chanceOfGlitter) {
leds[ random16(NUM_LEDS) ] += CRGB::White;
}
}
void confetti()
{
// random colored speckles that blink in and fade smoothly
fadeToBlackBy( leds, NUM_LEDS, 10);
int pos = random16(NUM_LEDS);
leds[pos] += CHSV( gHue + random8(64), 200, 255);
}
void sinelon()
{
// a colored dot sweeping back and forth, with fading trails
fadeToBlackBy( leds, NUM_LEDS, 20);
int pos = beatsin16( 13, 0, NUM_LEDS-1 );
leds[pos] += CHSV( gHue, 255, 192);
}
void bpm()
{
// colored stripes pulsing at a defined Beats-Per-Minute (BPM)
uint8_t BeatsPerMinute = 62;
CRGBPalette16 palette = PartyColors_p;
uint8_t beat = beatsin8( BeatsPerMinute, 64, 255);
for( int i = 0; i < NUM_LEDS; i++) { //9948
leds[i] = ColorFromPalette(palette, gHue+(i*2), beat-gHue+(i*10));
}
}
void juggle() {
// eight colored dots, weaving in and out of sync with each other
fadeToBlackBy( leds, NUM_LEDS, 20);
byte dothue = 0;
for( int i = 0; i < 8; i++) {
leds[beatsin16( i+7, 0, NUM_LEDS-1 )] |= CHSV(dothue, 200, 255);
dothue += 32;
}
}
LG 
