so i've put together some firewalker sneaks and have been playing about with some scanner patterns
its scans from each end of the neopixel strip with random colours
http://youtu.be/aEvJsrg7IBg
Code: Select all
#include <Adafruit_NeoPixel.h>
#define N_LEDS 42
#define PIN 12
Adafruit_NeoPixel strip = Adafruit_NeoPixel(N_LEDS, PIN, NEO_GRB + NEO_KHZ800);
[color=#CC6600]int[/color] RED;
[color=#CC6600]int[/color] GRE;
[color=#CC6600]int[/color] BLU;
[color=#CC6600]void[/color] [color=#CC6600][b]setup[/b][/color]() {
strip.[color=#CC6600]begin[/color]();
}
[color=#CC6600]int[/color] pos = 0, dir = 1; [color=#7E7E7E]// Position, direction of "eye"[/color]
[color=#CC6600]int[/color] pos2 = 41, dir2 = 1;
[color=#CC6600]void[/color] [color=#CC6600][b]loop[/b][/color]() {
RED = [color=#CC6600]random[/color](255);
GRE = [color=#CC6600]random[/color](255);
BLU = [color=#CC6600]random[/color](255);
[color=#CC6600]int[/color] j;
[color=#7E7E7E]// Draw 5 pixels centered on pos. setPixelColor() will clip any[/color]
[color=#7E7E7E]// pixels off the ends of the strip, we don't need to watch for that.[/color]
strip.setPixelColor(pos - 2, RED, GRE, BLU); [color=#7E7E7E]// Dark red[/color]
strip.setPixelColor(pos - 1, RED, GRE, BLU); [color=#7E7E7E]// Medium red[/color]
strip.setPixelColor(pos , RED, GRE, BLU); [color=#7E7E7E]// Center pixel is brightest[/color]
strip.setPixelColor(pos + 1, RED, GRE, BLU); [color=#7E7E7E]// Medium red[/color]
strip.setPixelColor(pos + 2, RED, GRE, BLU); [color=#7E7E7E]// Dark red[/color]
strip.setPixelColor(pos2 + 2, RED, GRE, BLU); [color=#7E7E7E]// Dark red[/color]
strip.setPixelColor(pos2 + 1, RED, GRE, BLU); [color=#7E7E7E]// Medium red[/color]
strip.setPixelColor(pos2 , RED, GRE, BLU); [color=#7E7E7E]// Center pixel is brightest[/color]
strip.setPixelColor(pos2 - 1, RED, GRE, BLU); [color=#7E7E7E]// Medium red[/color]
strip.setPixelColor(pos2 - 2, RED, GRE, BLU); [color=#7E7E7E]// Dark red[/color]
strip.show();
[color=#CC6600]delay[/color](60);
[color=#7E7E7E]// Rather than being sneaky and erasing just the tail pixel,[/color]
[color=#7E7E7E]// it's easier to erase it all and draw a new one next time.[/color]
[color=#CC6600]for[/color](j=-2; j<= 2; j++) strip.setPixelColor(pos+j, 0);
[color=#CC6600]for[/color](j=-2; j<= 2; j++) strip.setPixelColor(pos2+j, 0);
[color=#7E7E7E]// Bounce off ends of strip[/color]
pos += dir;
[color=#CC6600]if[/color](pos < 0) {
pos = 1;
dir = -dir;
} [color=#CC6600]else[/color] [color=#CC6600]if[/color](pos >= strip.numPixels()) {
pos = strip.numPixels() - 2;
dir = -dir;
}
pos2 += dir2;
[color=#CC6600]if[/color](pos2 < 0) {
pos2 = 1;
dir2 = -dir2;
} [color=#CC6600]else[/color] [color=#CC6600]if[/color](pos2 >= strip.numPixels()) {
pos2 = strip.numPixels() - 2;
dir2 = -dir2;
}
}
