internet high five!
I’m running off a Teensy 3.0 with 640 LEDs (WS2812Bs) and it’s plenty fast enough, even with dithering on. Here’s my plasma code. Play with those constants and palettes to vary the effects.
virtual void draw(int rawPot, int rawMic, bool button) {
frame += 100;
for (int x = 0; x < WIDTH; x++) {
for (int y = 0; y < HEIGHT; y++) {
int16_t v = 0;
uint16_t wibble = sin8(frame);
v += sin16(x * wibble * 8 + frame);
v += cos16(y * (128 - wibble) * 4 + frame);
v += sin16(y * x * cos8(-frame) / 2);
pixel(x, y) = ColorFromPalette(palette, (v >> 8) + 127);
}
}
}
I’m also doing noise, but I’m not sure if this will fly on a Flora:
class Perlin : public Effect {
private:
uint8_t hue;
uint16_t speed;
uint16_t scale;
uint16_t x;
uint16_t y;
uint16_t z;
uint8_t noise[MAX_DIMENSION][MAX_DIMENSION];
public:
Perlin(CRGB *leds) : Effect(leds), hue(0), speed(16), scale(30) {
x = random16();
y = random16();
z = random16();
}
virtual void draw(int rawPot, int rawMic, bool button) {
fillnoise8();
for (int i = 0; i < WIDTH; i++) {
for (int j = 0; j < HEIGHT; j++) {
// We use the value at the (i,j) coordinate in the noise
// array for our brightness, and the flipped value from (j,i)
// for our pixel's hue.
// pixel(i, j) = CHSV(noise[j][i], 255, noise[i][j]);
// You can also explore other ways to constrain the hue used, like below
pixel(i, j) = CHSV(hue + (noise[j][i]>>2), 255, noise[i][j]);
}
}
hue++;
}
void fillnoise8() {
for (int i = 0; i < MAX_DIMENSION; i++) {
int ioffset = scale * i;
for (int j = 0; j < MAX_DIMENSION; j++) {
int joffset = scale * j;
noise[i][j] = inoise8(x + ioffset, y + joffset, z);
}
}
z += speed;
}
};
)