80 lines
3.5 KiB
Arduino
80 lines
3.5 KiB
Arduino
|
/* lightnings
|
||
|
|
*
|
||
|
|
* By: Daniel Wilson
|
||
|
|
*
|
||
|
|
* Modified by: Andrew Tuline
|
||
|
|
*
|
||
|
|
* Date: January, 2017
|
||
|
|
*
|
||
|
|
* Lightnings is a program that lets you make an LED strip look like a 1D cloud of lightning.
|
||
|
|
* I wouldn't use this code in conjunction with any controls because it uses those nasty blocking delays which I haven't bothered to remove.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "FastLED.h"
|
||
|
|
|
||
|
|
#if FASTLED_VERSION < 3001000
|
||
|
|
#error "Requires FastLED 3.1 or later; check github for latest code."
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Fixed definitions cannot change on the fly.
|
||
|
|
#define LED_DT 12 // Data pin to connect to the strip.
|
||
|
|
#define LED_CK 11 // Clock pin for WS2801 or APA102.
|
||
|
|
#define COLOR_ORDER BGR // It's GRB for WS2812 and BGR for APA102.
|
||
|
|
#define LED_TYPE APA102 // Using APA102, WS2812, WS2801. Don't forget to change LEDS.addLeds.
|
||
|
|
#define NUM_LEDS 60 // Number of LED's.
|
||
|
|
|
||
|
|
// Global variables can be changed on the fly.
|
||
|
|
uint8_t max_bright = 255; // Overall brightness definition. It can be changed on the fly.
|
||
|
|
|
||
|
|
struct CRGB leds[NUM_LEDS]; // Initialize our LED array.
|
||
|
|
|
||
|
|
uint8_t frequency = 50; // controls the interval between strikes
|
||
|
|
uint8_t flashes = 8; //the upper limit of flashes per strike
|
||
|
|
unsigned int dimmer = 1;
|
||
|
|
|
||
|
|
uint8_t ledstart; // Starting location of a flash
|
||
|
|
uint8_t ledlen; // Length of a flash
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
|
||
|
|
Serial.begin(57600); // Initialize serial port for debugging.
|
||
|
|
delay(1000); // Soft startup to ease the flow of electrons.
|
||
|
|
|
||
|
|
// LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS); // Use this for WS2812
|
||
|
|
LEDS.addLeds<LED_TYPE, LED_DT, LED_CK, COLOR_ORDER>(leds, NUM_LEDS); // Use this for WS2801 or APA102
|
||
|
|
|
||
|
|
FastLED.setBrightness(max_bright);
|
||
|
|
set_max_power_in_volts_and_milliamps(5, 500); // FastLED Power management set at 5V, 500mA.
|
||
|
|
|
||
|
|
} // setup()
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
|
||
|
|
ledstart = random8(NUM_LEDS); // Determine starting location of flash
|
||
|
|
ledlen = random8(NUM_LEDS-ledstart); // Determine length of flash (not to go beyond NUM_LEDS-1)
|
||
|
|
|
||
|
|
for (int flashCounter = 0; flashCounter < random8(3,flashes); flashCounter++) {
|
||
|
|
if(flashCounter == 0) dimmer = 5; // the brightness of the leader is scaled down by a factor of 5
|
||
|
|
else dimmer = random8(1,3); // return strokes are brighter than the leader
|
||
|
|
|
||
|
|
fill_solid(leds+ledstart,ledlen,CHSV(255, 0, 255/dimmer));
|
||
|
|
FastLED.show(); // Show a section of LED's
|
||
|
|
delay(random8(4,10)); // each flash only lasts 4-10 milliseconds
|
||
|
|
fill_solid(leds+ledstart,ledlen,CHSV(255,0,0)); // Clear the section of LED's
|
||
|
|
FastLED.show();
|
||
|
|
|
||
|
|
if (flashCounter == 0) delay (150); // longer delay until next flash after the leader
|
||
|
|
|
||
|
|
delay(50+random8(100)); // shorter delay between strokes
|
||
|
|
} // for()
|
||
|
|
|
||
|
|
delay(random8(frequency)*100); // delay between strikes
|
||
|
|
|
||
|
|
} // loop()
|
||
|
|
|