{{ message }}

Instantly share code, notes, and snippets.

# Stefan PetrickStefanPetrick

Last active Jun 25, 2017
FastLED simplex noise and colormapping fully modulated by itself
View noise_noise.ino
 void noise_noise1() { CRGBPalette16 Pal( pit ); /* here is how the palette looks like: DEFINE_GRADIENT_PALETTE( pit ) { 0, 3, 3, 3, 64, 13, 13, 255, // blue 128, 3, 3, 3, 192, 255, 130, 3, // orange
Last active May 27, 2020
The complete code for the noise controlled noise.
View noise_noise.ino
 /* A FastLED matrix example: A simplex noise field fully modulated and controlled by itself written by Stefan Petrick 2017 Do with it whatever you like and show your results to the FastLED community https://plus.google.com/communities/109127054924227823508 */ #include "FastLED.h"
Last active Jul 20, 2020
Proof of concept for smooth fading
View Noise_smoooooth.ino
 /* A FastLED matrix example: A simplex noise field fully modulated and controlled by itself written by Stefan Petrick 2017 Do with it whatever you like and show your results to the FastLED community https://plus.google.com/communities/109127054924227823508 */ #include "FastLED.h"
Created Jul 19, 2017
RGB Sinusoids
View sinusoid3
 float speed = 0.3; // speed of the movement along the Lissajous curves float size = 3; // amplitude of the curves for (uint8_t y = 0; y < Height; y++) { for (uint8_t x = 0; x < Width; x++) { float cx = y + float(size * (sinf (float(speed * 0.003 * float(millis() ))) ) ) - 8; // the 8 centers the middle on a 16x16 float cy = x + float(size * (cosf (float(speed * 0.0022 * float(millis()))) ) ) - 8; float v = 127 * (1 + sinf ( sqrtf ( ((cx * cx) + (cy * cy)) ) )); uint8_t data = v;
Last active Dec 20, 2020
View Fire2018.ino
 /* FastLED Fire 2018 by Stefan Petrick The visual effect highly depends on the framerate. In the Youtube video it runs at arround 70 fps. https://www.youtube.com/watch?v=SWMu-a9pbyk The heatmap movement is independend from the framerate. The actual scaling operation is not.
Last active Dec 20, 2020
Fire effect v2.0 for FastLED matrix
View Fire2018-2.ino
 #include "FastLED.h" // matrix size uint8_t Width = 16; uint8_t Height = 16; uint8_t CentreX = (Width / 2) - 1; uint8_t CentreY = (Height / 2) - 1; // NUM_LEDS = Width * Height #define NUM_LEDS 256
Created Oct 30, 2018
View Metaballs.INO
 /* Metaballs proof of concept by Stefan Petrick ...very rough 8bit math here... read more about the concept of isosurfaces and metaballs: https://www.gamedev.net/articles/programming/graphics/exploring-metaballs-and-isosurfaces-in-2d-r2556 */ #include "FastLED.h"