avalon66:
What have I missed
After 270 posts, you have missed learning how to post your code on the forum. Quite an achievement.
/*
Demo sketch showing how to use the functions and features of the FastLED
library to create custom effects. For this example we're going to implement
Mark Kriegsman's Fire2012 effect from the FastLED examples folder here:
https://github.com/FastLED/FastLED/tree/master/examples/Fire2012
The basic idea is to use FastLED to create the LED color data, then
copy the data to the ws2812fx instance for display.
Keith Lord - 2018
LICENSE
The MIT License (MIT)
Copyright (c) 2018 Keith Lord
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sub-license, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
CHANGELOG
2018-05-13 initial version
*/
#include "FastLED.h" // be sure to install and include the FastLED lib
#include <WS2812FX.h>
#define NUM_LEDS 300
#define LED_PIN 7
WS2812FX ws2812fx = WS2812FX(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);
// declare global parameters used by Fire2012
bool gReverseDirection = false;
void setup() {
Serial.begin(115200);
// init WS2812FX to use a custom effect
ws2812fx.init();
ws2812fx.setBrightness(255);
ws2812fx.setColor(BLUE);
ws2812fx.setSpeed(1000);
ws2812fx.setMode(FX_MODE_CUSTOM);
ws2812fx.setCustomMode(myCustomEffect);
ws2812fx.start();
}
void loop() {
ws2812fx.service();
}
// in the custom effect run the Fire2012 algorithm
uint16_t myCustomEffect() {
Fire2012();
// return the animation speed based on the ws2812fx speed setting
return (ws2812fx.getSpeed() / NUM_LEDS);
}
/*
* paste in the Fire2012 code with a small edit at the end which uses the
* setPixelColor() function to copy the color data to the ws2812fx instance.
*/
// Fire2012 by Mark Kriegsman, July 2012
// as part of "Five Elements" shown here: http://youtu.be/knWiGsmgycY
////
// This basic one-dimensional 'fire' simulation works roughly as follows:
// There's a underlying array of 'heat' cells, that model the temperature
// at each point along the line. Every cycle through the simulation,
// four steps are performed:
// 1) All cells cool down a little bit, losing heat to the air
// 2) The heat from each cell drifts 'up' and diffuses a little
// 3) Sometimes randomly new 'sparks' of heat are added at the bottom
// 4) The heat from each cell is rendered as a color into the leds array
// The heat-to-color mapping uses a black-body radiation approximation.
//
// Temperature is in arbitrary units from 0 (cold black) to 255 (white hot).
//
// This simulation scales it self a bit depending on NUM_LEDS; it should look
// "OK" on anywhere from 20 to 100 LEDs without too much tweaking.
//
// I recommend running this simulation at anywhere from 30-100 frames per second,
// meaning an interframe delay of about 10-35 milliseconds.
//
// Looks best on a high-density LED setup (60+ pixels/meter).
//
//
// There are two main parameters you can play with to control the look and
// feel of your fire: COOLING (used in step 1 above), and SPARKING (used
// in step 3 above).
//
// COOLING: How much does the air cool as it rises?
// Less cooling = taller flames. More cooling = shorter flames.
// Default 50, suggested range 20-100
#define COOLING 55
// SPARKING: What chance (out of 255) is there that a new spark will be lit?
// Higher chance = more roaring fire. Lower chance = more flickery fire.
// Default 120, suggested range 50-200.
#define SPARKING 120
void Fire2012()
{
// Array of temperature readings at each simulation cell
static byte heat[NUM_LEDS];
// Step 1. Cool down every cell a little
for( int i = 0; i < NUM_LEDS; i++) {
heat[i] = qsub8( heat[i], random8(0, ((COOLING * 10) / NUM_LEDS) + 2));
}
// Step 2. Heat from each cell drifts 'up' and diffuses a little
for( int k= NUM_LEDS - 1; k >= 2; k--) {
heat[k] = (heat[k - 1] + heat[k - 2] + heat[k - 2] ) / 3;
}
// Step 3. Randomly ignite new 'sparks' of heat near the bottom
if( random8() < SPARKING ) {
int y = random8(7);
heat[y] = qadd8( heat[y], random8(160,255) );
}
// Step 4. Map from heat cells to LED colors
for( int j = 0; j < NUM_LEDS; j++) {
CRGB color = HeatColor( heat[j]);
int pixelnumber;
if( gReverseDirection ) {
pixelnumber = (NUM_LEDS-1) - j;
} else {
pixelnumber = j;
}
// **** modified for use with WS2812FX ****
// leds[pixelnumber] = color;
ws2812fx.setPixelColor(pixelnumber, color.red, color.green, color.blue);
// **** modified for use with WS2812FX ****
}
}
Have you tried using one of the standard example FastLED sketches with your 300 led strip?
