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);
}
}