Hallo,
ich bin absoluter Anfänge mit Arduino.
Habe hier einen LPD8806 Strip (18 LEDs lang) und möchte die LEDs einzeln oder zusammen ansteuern und eine gewisse Zeit leuchten lassen.
Als Beispiel könnte es so aussehen:
LED1 rot, LED2 grün, Led3 blau... (leuchten 4 Sekunden)
alle LEDs rot (leuchten 3 Sekunden)
LED1,3,5,7,9,11,13,15,17 rot und LED2,4,6,8,10,12,14,16,18 blau (leuchten 5 Sekunden)
Kann mir jemand helfen dies umzusetzen?
Ich denke wenn ich diese Codezeilen hätte könnte ich alles weitere selbst davon ableiten...
Der Strandtestcode der schon läuft ist dieser:
#include "LPD8806.h"
//#include "SPI.h"
// Example to control LPD8806-based RGB LED Modules in a strip
/*****************************************************************************/
// Number of RGB LEDs in strand:
int nLEDs = 18;
// Chose 2 pins for output; can be any valid output pins:
int dataPin = 2;
int clockPin = 3;
// First parameter is the number of LEDs in the strand. The LED strips
// are 32 LEDs per meter but you can extend or cut the strip. Next two
// parameters are SPI data and clock pins:
LPD8806 strip = LPD8806(nLEDs, dataPin, clockPin);
// You can optionally use hardware SPI for faster writes, just leave out
// the data and clock pin parameters. But this does limit use to very
// specific pins on the Arduino. For "classic" Arduinos (Uno, Duemilanove,
// etc.), data = pin 11, clock = pin 13. For Arduino Mega, data = pin 51,
// clock = pin 52. For 32u4 Breakout Board+ and Teensy, data = pin B2,
// clock = pin B1. For Leonardo, this can ONLY be done on the ICSP pins.
//LPD8806 strip = LPD8806(nLEDs);
void setup() {
// Start up the LED strip
strip.begin();
// Update the strip, to start they are all 'off'
strip.show();
}
void loop() {
// Fill the entire strip with...
colorWipe(strip.Color(127, 0, 0), 50); // Red
colorWipe(strip.Color( 0, 127, 0), 50); // Green
colorWipe(strip.Color( 0, 0, 127), 50); // Blue
rainbow(10);
rainbowCycle(0); // make it go through the cycle fairly fast
}
void rainbow(uint8_t wait) {
int i, j;
for (j=0; j < 384; j++) { // 3 cycles of all 384 colors in the wheel
for (i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel( (i + j) % 384));
}
strip.show(); // write all the pixels out
delay(wait);
}
}
// Slightly different, this one makes the rainbow wheel equally distributed
// along the chain
void rainbowCycle(uint8_t wait) {
uint16_t i, j;
for (j=0; j < 384 * 5; j++) { // 5 cycles of all 384 colors in the wheel
for (i=0; i < strip.numPixels(); i++) {
// tricky math! we use each pixel as a fraction of the full 384-color wheel
// (thats the i / strip.numPixels() part)
// Then add in j which makes the colors go around per pixel
// the % 384 is to make the wheel cycle around
strip.setPixelColor(i, Wheel( ((i * 384 / strip.numPixels()) + j) % 384) );
}
strip.show(); // write all the pixels out
delay(wait);
}
}
// Fill the dots progressively along the strip.
void colorWipe(uint32_t c, uint8_t wait) {
int i;
for (i=0; i < strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
// Chase one dot down the full strip.
void colorChase(uint32_t c, uint8_t wait) {
int i;
// Start by turning all pixels off:
for(i=0; i<strip.numPixels(); i++) strip.setPixelColor(i, 0);
// Then display one pixel at a time:
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c); // Set new pixel 'on'
strip.show(); // Refresh LED states
strip.setPixelColor(i, 0); // Erase pixel, but don't refresh!
delay(wait);
}
strip.show(); // Refresh to turn off last pixel
}
/* Helper functions */
//Input a value 0 to 384 to get a color value.
//The colours are a transition r - g -b - back to r
uint32_t Wheel(uint16_t WheelPos)
{
byte r, g, b;
switch(WheelPos / 128)
{
case 0:
r = 127 - WheelPos % 128; //Red down
g = WheelPos % 128; // Green up
b = 0; //blue off
break;
case 1:
g = 127 - WheelPos % 128; //green down
b = WheelPos % 128; //blue up
r = 0; //red off
break;
case 2:
b = 127 - WheelPos % 128; //blue down
r = WheelPos % 128; //red up
g = 0; //green off
break;
}
return(strip.Color(r,g,b));
}
Danke!!!
