Holy crap! Thanks!!

[derbenx]

Been playing with an ESP8266 NodeMcu for a few months now, using a 16x16 5050 LED grid. The thing would WDT reboot randomly using the adafruit library when calling strip.show(). As a bonus it would display really freaky stuff using tone when calling strip.show(), you could see the sounds. I was using pin D6 if anyone wants to try it out. :P

Anyway... this solved both those problems! It hasn't crashed in about 12h so far and I can play tones without LED sparkles or pausing it to avoid sparkles. Took me a bit to figure out how to convert over some items I had.. Here is a sketch that might help some trying to convert from adafruit. Plug LED input into RX aka GPIO3 , this prevents sending serial commands to the ESP8266, but you can still print serial for debugging. (If you need to send commands, just use the webserver)

`
#include <NeoPixelBusLg.h>
NeoPixelBusLg<NeoGrbFeature, NeoEsp8266DmaWs2812xMethod> strip(256, GPIO3);

//store an array of colours:
int a[5][3] = { {255,0,0},{255,128,0},{255,255,0},{0,255,0},{0, 0, 255} };
int ii=0; // start at LED 0

void setup() {
Serial.begin(115200); //has to be called before strip.Begin()
while (!Serial);
strip.Begin();
strip.SetLuminance(100);
strip.Show();
}
void loop(){
for (int i=0;i<5;i++) {
strip.SetPixelColor( ii, { a[i][0],a[i][1],a[i][2] } );
}
ii++;
if (ii>255) { ii=0; }
strip.Show();
delay(100);
}
// I haven't tested this exact code, I just made it up for this article, but it SHOULD work.
`

[Makuna]

I would change two lines,

RgbColor a[5] = { {255,0,0},{255,128,0},{255,255,0},{0,255,0},{0, 0, 255} };

...

strip.SetPixelColor( ii, a[i] );

[derbenx]

I swear I tried something like that first and the compiler complained and then I tried what I had above and it worked. :P Maybe I was just up too late that night if that works fine too!