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- #include "FastLED.h"
- // How many leds in your strip?
- #define NUM_LEDS 30
- // 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 4
- #define CLOCK_PIN 13
- // Define the array of leds
- CRGB leds[NUM_LEDS];
- void setup() {
- FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
- }
- void loop() {
- // First slide the led in one direction
- for(int i = 0; i < NUM_LEDS; i++) {
- // Set the i'th led to red
- leds[i] = CRGB::Red;
- // Show the leds
- FastLED.show();
- // now that we've shown the leds, reset the i'th led to black
- leds[i] = CRGB::Black;
- // Wait a little bit before we loop around and do it again
- delay(90);
- }
- // Now go in the other direction.
- for(int i = NUM_LEDS-1; i >= 0; i--) {
- // Set the i'th led to red
- leds[i] = CRGB::Red;
- // Show the leds
- FastLED.show();
- // now that we've shown the leds, reset the i'th led to black
- leds[i] = CRGB::Black;
- // Wait a little bit before we loop around and do it again
- delay(90);
- }
- }
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