Oh the grandest of plans I had, to create an ultra slick Daft Punk Helmet replica (as others have done), alas time ran out so I just crammed one together. A bunch of ShiftBrites (stolen from my Wine-O-Meter) driven by an Ardunio, mounted on some clear plastic and shoved inside one of my motorcycle helmets. Definitely not a high end deal, but it certainly was fun and made for some pretty swag photos.

As a side note, this used horrible sledgehammer style coding as it was a rush job, keep that in mind if you use the sketch below.

#### Arduino Sketch

#include <HughesyShiftBrite.h> HughesyShiftBrite sb; #define NumLEDs 20 #define NumChannels 3 /* 10 = Data 11 = Latch 12 = Enable 13 = Clock */ #define SIZE 255 #define DELAY 10 #define HUE_MAX 6.0 float HUE_DELTA = 0.01; int maxVal = 1023; int count = 0; int largecount = 0; int trailcount = 0; int animation = 0; int currentVal = 0; int currentChannel = 0; int LEDChannels[NumLEDs][NumChannels] = {0}; int displayValue = 20; int zigzagdirection = 0; int zigzagswap = 0; long deltas[3] = {5, 6, 7 }; long rgb[3]; long trailhue[100][3]; long rgbval; long k, temp_value; int r1; int g1; int b1; // for reasons unknown, if value !=0, the LED doesn't light. Hmm ... // and saturation seems to be inverted float hue=0.0, saturation=1.0, value=1.0; void setup() { sb = HughesyShiftBrite(10,11,12,13); randomSeed(analogRead(4)); for (k=0; k<3; k++) { rgb[k]=0; if (random(100) > 50) { deltas[k] = -1 * deltas[k]; // randomize direction } } } void loop() { count++; memset(LEDChannels, 0, sizeof(LEDChannels)); nextcolor(); for (int z = 1;z<100;z++) { trailhue[z][0] = trailhue[z-1][0]; trailhue[z][1] = trailhue[z-1][1]; trailhue[z][2] = trailhue[z-1][2]; } trailhue[0][0] = rgb[0]; trailhue[0][1] = rgb[1]; trailhue[0][2] = rgb[2]; if(largecount > 30 && random(20) == 0) { r1 = random(80); g1 = random(80); b1 = random(80); animation = random(10); largecount = 0; if(animation == 7){ HUE_DELTA = .5; }else if(animation > 7) { HUE_DELTA = 0.5; } else{ HUE_DELTA = 0.01; } } if(animation==0) { sidescroll(count,rgb[0],rgb[1],rgb[2]); //if(count > 1) //{ // sidescroll(count-1,trailhue[99][0],trailhue[99][1],trailhue[99][2]); //} } else if(animation==1) { downscroll(count,rgb[0],rgb[1],rgb[2]); } else if(animation==2) { zigzag(count,rgb[0],rgb[1],rgb[2]); } else if(animation==3) { sidespread(count,rgb[0],rgb[1],rgb[2]); } else if(animation==4) { centerspread(count,rgb[0],rgb[1],rgb[2]); } else if(animation==5) { contrast(count,rgb[0],rgb[1],rgb[2]); } else if(animation==6) { randompattern(); } else if(animation==7) { rainbow(count); } else { circle(count,rgb[0],rgb[1],rgb[2]); } for (int h = 1;h<=NumLEDs-2;h++) sb.sendColour(LEDChannels[h][0],LEDChannels[h][1],LEDChannels[h][2]); delay(50); if(count > 5){ count = 0; largecount++; } sb.latch(); } void randomhue() { for (int h = 1;h<=NumLEDs-2;h++) { // LEDChannels } } void nextcolor() { hue += HUE_DELTA; if (hue > HUE_MAX) { hue=0.0; } rgbval = HSV_to_RGB(hue, saturation, value); rgb[0] = (rgbval & 0x00FF0000) >> 16; // there must be better ways rgb[1] = (rgbval & 0x0000FF00) >> 8; rgb[2] = rgbval & 0x000000FF; } void rainbow(int count) { long oldrgb[3]; oldrgb[0] = rgb[0]; oldrgb[1] = rgb[1]; oldrgb[2] = rgb[2]; float oldhue = hue; for (int h = 1;h<=6;h++) { LEDChannels[13-h][0] = rgb[0]; LEDChannels[13-h][1] = rgb[1]; LEDChannels[13-h][2] = rgb[2]; LEDChannels[h][0] = rgb[0]; LEDChannels[h][1] = rgb[1]; LEDChannels[h][2] = rgb[2]; LEDChannels[12+h][0] = rgb[0]; LEDChannels[12+h][1] = rgb[1]; LEDChannels[12+h][2] = rgb[2]; nextcolor(); } rgb[0] = oldrgb[0]; rgb[1] = oldrgb[1]; rgb[2] = oldrgb[2]; hue = oldhue; } void contrast(int count, int r, int g, int b) { if(count>3) { LEDChannels[13-1][0] = r; LEDChannels[13-1][1] = g; LEDChannels[13-1][2] = b; LEDChannels[13-2][0] = r1; LEDChannels[13-2][1] = g1; LEDChannels[13-2][2] = b1; LEDChannels[13-3][0] = r; LEDChannels[13-3][1] = g; LEDChannels[13-3][2] = b; LEDChannels[13-4][0] = r1; LEDChannels[13-4][1] = g1; LEDChannels[13-4][2] = b1; LEDChannels[13-5][0] = r; LEDChannels[13-5][1] = g; LEDChannels[13-5][2] = b; LEDChannels[13-6][0] = r1; LEDChannels[13-6][1] = g1; LEDChannels[13-6][2] = b1; LEDChannels[1][0] = r; LEDChannels[1][1] = g; LEDChannels[1][2] = b; LEDChannels[2][0] = r1; LEDChannels[2][1] = g1; LEDChannels[2][2] = b1; LEDChannels[3][0] = r; LEDChannels[3][1] = g; LEDChannels[3][2] = b; LEDChannels[4][0] = r1; LEDChannels[4][1] = g1; LEDChannels[4][2] = b1; LEDChannels[5][0] = r; LEDChannels[5][1] = g; LEDChannels[5][2] = b; LEDChannels[6][0] = r1; LEDChannels[6][1] = g1; LEDChannels[6][2] = b1; LEDChannels[12+1][0] = r; LEDChannels[12+1][1] = g; LEDChannels[12+1][2] = b; LEDChannels[12+2][0] = r1; LEDChannels[12+2][1] = g1; LEDChannels[12+2][2] = b1; LEDChannels[12+3][0] = r; LEDChannels[12+3][1] = g; LEDChannels[12+3][2] = b; LEDChannels[12+4][0] = r1; LEDChannels[12+4][1] = g1; LEDChannels[12+4][2] = b1; LEDChannels[12+5][0] = r; LEDChannels[12+5][1] = g; LEDChannels[12+5][2] = b; LEDChannels[12+6][0] = r1; LEDChannels[12+6][1] = g1; LEDChannels[12+6][2] = b1; } else { LEDChannels[13-1][0] = r1; LEDChannels[13-1][1] = g1; LEDChannels[13-1][2] = b1; LEDChannels[13-2][0] = r; LEDChannels[13-2][1] = g; LEDChannels[13-2][2] = b; LEDChannels[13-3][0] = r1; LEDChannels[13-3][1] = g1; LEDChannels[13-3][2] = b1; LEDChannels[13-4][0] = r; LEDChannels[13-4][1] = g; LEDChannels[13-4][2] = b; LEDChannels[13-5][0] = r1; LEDChannels[13-5][1] = g1; LEDChannels[13-5][2] = b1; LEDChannels[13-6][0] = r; LEDChannels[13-6][1] = g; LEDChannels[13-6][2] = b; LEDChannels[1][0] = r1; LEDChannels[1][1] = g1; LEDChannels[1][2] = b1; LEDChannels[2][0] = r; LEDChannels[2][1] = g; LEDChannels[2][2] = b; LEDChannels[3][0] = r1; LEDChannels[3][1] = g1; LEDChannels[3][2] = b1; LEDChannels[4][0] = r; LEDChannels[4][1] = g; LEDChannels[4][2] = b; LEDChannels[5][0] = r1; LEDChannels[5][1] = g1; LEDChannels[5][2] = b1; LEDChannels[6][0] = r; LEDChannels[6][1] = g; LEDChannels[6][2] = b; LEDChannels[12+1][0] = r1; LEDChannels[12+1][1] = g1; LEDChannels[12+1][2] = b1; LEDChannels[12+2][0] = r; LEDChannels[12+2][1] = g; LEDChannels[12+2][2] = b; LEDChannels[12+3][0] = r1; LEDChannels[12+3][1] = g1; LEDChannels[12+3][2] = b1; LEDChannels[12+4][0] = r; LEDChannels[12+4][1] = g; LEDChannels[12+4][2] = b; LEDChannels[12+5][0] = r1; LEDChannels[12+5][1] = g1; LEDChannels[12+5][2] = b1; LEDChannels[12+6][0] = r; LEDChannels[12+6][1] = g; LEDChannels[12+6][2] = b; } } void randompattern() { for (int h = 1;h<=12;h++) { LEDChannels[0] = random(127); LEDChannels[1] = random(127); LEDChannels[2] = random(127); } } void circle(int count, int r, int g, int b) { if(count==1) { LEDChannels[13-3][0] = r; LEDChannels[13-3][1] = g; LEDChannels[13-3][2] = b; LEDChannels[13-4][0] = r; LEDChannels[13-4][1] = g; LEDChannels[13-4][2] = b; } else if(count==2) { LEDChannels[13-2][0] = r; LEDChannels[13-2][1] = g; LEDChannels[13-2][2] = b; LEDChannels[13-5][0] = r; LEDChannels[13-5][1] = g; LEDChannels[13-5][2] = b; LEDChannels[3][0] = r; LEDChannels[3][1] = g; LEDChannels[3][2] = b; LEDChannels[4][0] = r; LEDChannels[4][1] = g; LEDChannels[4][2] = b; LEDChannels[12+3][0] = r; LEDChannels[12+3][1] = g; LEDChannels[12+3][2] = b; LEDChannels[12+4][0] = r; LEDChannels[12+4][1] = g; LEDChannels[12+4][2] = b; } else if(count==3) { LEDChannels[13-1][0] = r; LEDChannels[13-1][1] = g; LEDChannels[13-1][2] = b; LEDChannels[13-6][0] = r; LEDChannels[13-6][1] = g; LEDChannels[13-6][2] = b; LEDChannels[2][0] = r; LEDChannels[2][1] = g; LEDChannels[2][2] = b; LEDChannels[5][0] = r; LEDChannels[5][1] = g; LEDChannels[5][2] = b; LEDChannels[12+2][0] = r; LEDChannels[12+2][1] = g; LEDChannels[12+2][2] = b; LEDChannels[12+5][0] = r; LEDChannels[12+5][1] = g; LEDChannels[12+5][2] = b; } else if(count==4) { LEDChannels[1][0] = r; LEDChannels[1][1] = g; LEDChannels[1][2] = b; LEDChannels[6][0] = r; LEDChannels[6][1] = g; LEDChannels[6][2] = b; LEDChannels[12+1][0] = r; LEDChannels[12+1][1] = g; LEDChannels[12+1][2] = b; LEDChannels[12+6][0] = r; LEDChannels[12+6][1] = g; LEDChannels[12+6][2] = b; } } void zigzag(int count, int r, int g, int b) { int oldcount = count; if(zigzagdirection == 1) { count = 6 - count; } if(count==1) { LEDChannels[count][0] = r; LEDChannels[count][1] = g; LEDChannels[count][2] = b; LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; } else if(count==2) { LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; LEDChannels[12+count][0] = r; LEDChannels[12+count][1] = g; LEDChannels[12+count][2] = b; } else if(count==3) { LEDChannels[count][0] = r; LEDChannels[count][1] = g; LEDChannels[count][2] = b; LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; } else if(count==4) { LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; LEDChannels[12+count][0] = r; LEDChannels[12+count][1] = g; LEDChannels[12+count][2] = b; } else if(count==5) { LEDChannels[count][0] = r; LEDChannels[count][1] = g; LEDChannels[count][2] = b; LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; } else if(count==6) { LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; LEDChannels[12+count][0] = r; LEDChannels[12+count][1] = g; LEDChannels[12+count][2] = b; } if(oldcount==6) { if(zigzagdirection == 0) { zigzagdirection = 1; } else { zigzagdirection = 0; } } } void sidespread(int count, int r, int g, int b) { int leftcount = 1; int rightcount = 1; if(count==6) { leftcount = 3; rightcount = 4; } else if(count==5) { leftcount = 2; rightcount = 5; } else if(count==4) { leftcount = 1; rightcount = 6; } else if(count==3) { leftcount = 3; rightcount = 4; } else if(count==2) { leftcount = 2; rightcount = 5; } else if(count==1) { leftcount = 1; rightcount = 6; } LEDChannels[rightcount][0] = r; LEDChannels[rightcount][1] = g; LEDChannels[rightcount][2] = b; LEDChannels[13-rightcount][0] = r; LEDChannels[13-rightcount][1] = g; LEDChannels[13-rightcount][2] = b; LEDChannels[12+rightcount][0] = r; LEDChannels[12+rightcount][1] = g; LEDChannels[12+rightcount][2] = b; LEDChannels[leftcount][0] = r; LEDChannels[leftcount][1] = g; LEDChannels[leftcount][2] = b; LEDChannels[13-leftcount][0] = r; LEDChannels[13-leftcount][1] = g; LEDChannels[13-leftcount][2] = b; LEDChannels[12+leftcount][0] = r; LEDChannels[12+leftcount][1] = g; LEDChannels[12+leftcount][2] = b; } void centerspread(int count, int r, int g, int b) { int leftcount = 1; int rightcount = 1; if(count==1) { leftcount = 3; rightcount = 4; } else if(count==2) { leftcount = 2; rightcount = 5; } else if(count==3) { leftcount = 1; rightcount = 6; } else if(count==4) { leftcount = 3; rightcount = 4; } else if(count==5) { leftcount = 2; rightcount = 5; } else if(count==6) { leftcount = 1; rightcount = 6; } LEDChannels[rightcount][0] = r; LEDChannels[rightcount][1] = g; LEDChannels[rightcount][2] = b; LEDChannels[13-rightcount][0] = r; LEDChannels[13-rightcount][1] = g; LEDChannels[13-rightcount][2] = b; LEDChannels[12+rightcount][0] = r; LEDChannels[12+rightcount][1] = g; LEDChannels[12+rightcount][2] = b; LEDChannels[leftcount][0] = r; LEDChannels[leftcount][1] = g; LEDChannels[leftcount][2] = b; LEDChannels[13-leftcount][0] = r; LEDChannels[13-leftcount][1] = g; LEDChannels[13-leftcount][2] = b; LEDChannels[12+leftcount][0] = r; LEDChannels[12+leftcount][1] = g; LEDChannels[12+leftcount][2] = b; } void sidescroll(int count, int r, int g, int b) { LEDChannels[count][0] = r; LEDChannels[count][1] = g; LEDChannels[count][2] = b; LEDChannels[13-count][0] = r; LEDChannels[13-count][1] = g; LEDChannels[13-count][2] = b; LEDChannels[12+count][0] = r; LEDChannels[12+count][1] = g; LEDChannels[12+count][2] = b; } void downscroll(int count, int r, int g, int b) { if(count == 1 || count == 4) { for (int h = 1;h<=6;h++) { LEDChannels[h][0] = r; LEDChannels[h][1] = g; LEDChannels[h][2] = b; } } if(count == 2 || count == 5) { for (int h = 7;h<=12;h++) { LEDChannels[h][0] = r; LEDChannels[h][1] = g; LEDChannels[h][2] = b; } } if(count == 3 || count == 6) { for (int h = 13;h<=18;h++) { LEDChannels[h][0] = r; LEDChannels[h][1] = g; LEDChannels[h][2] = b; } } } long HSV_to_RGB( float h, float s, float v ) { /* modified from Alvy Ray Smith's site: http://www.alvyray.com/Papers/hsv2rgb.htm */ // H is given on [0, 6]. S and V are given on [0, 1]. // RGB is returned as a 24-bit long #rrggbb int i; float m, n, f; // not very elegant way of dealing with out of range: return black if ((s<0.0) || (s>1.0) || (v<1.0) || (v>1.0)) { return 0L; } if ((h < 0.0) || (h > 6.0)) { return long( v * 255 ) + long( v * 255 ) * 256 + long( v * 255 ) * 65536; } i = floor(h); f = h - i; if ( !(i&1) ) { f = 1 - f; // if i is even } m = v * (1 - s); n = v * (1 - s * f); switch (i) { case 6: case 0: return long(v * 255 ) * 65536 + long( n * 255 ) * 256 + long( m * 255); case 1: return long(n * 255 ) * 65536 + long( v * 255 ) * 256 + long( m * 255); case 2: return long(m * 255 ) * 65536 + long( v * 255 ) * 256 + long( n * 255); case 3: return long(m * 255 ) * 65536 + long( n * 255 ) * 256 + long( v * 255); case 4: return long(n * 255 ) * 65536 + long( m * 255 ) * 256 + long( v * 255); case 5: return long(v * 255 ) * 65536 + long( m * 255 ) * 256 + long( n * 255); } }