hi, i have a code to control leds and it uploads fine but they wont turn on when i hook them up. They always work whenever i use other code but they wont for this.
Mello.ino (7.94 KB)
We need to know what strip you have and how you have wired them up, so please post a schematic and a good photograph showing the wiring.
You need to post the code correctly press the top left hand icon </> and paste the code between the ] and [
This is because without this the forum software mistakes some code for formatting information, which is why some of your code in in italics.
[//Sample Pattern for V2 Mello Head with 558 LEDs using WS2812b by @jotamakuro
#include "FastLED.h"
// Params for width and height
const uint8_t kMatrixWidth = 54;
const uint8_t kMatrixHeight = 12;
#define NUM_LEDS (kMatrixWidth * kMatrixHeight)
CRGB leds[ NUM_LEDS ];
#define LAST_VISIBLE_LED 647
uint16_t XY (uint16_t x, uint16_t y) {
// any out of bounds address maps to the first hidden pixel
if ( (x >= kMatrixWidth) || (y >= kMatrixHeight) ) {
return (LAST_VISIBLE_LED + 1);
}
const uint16_t XYTable[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161,
162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215,
216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269,
270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323,
324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377,
378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431,
432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485,
486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539,
540, 541, 542, 543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554, 555, 556, 557, 558, 559, 560, 561, 562, 563, 564, 565, 566, 567, 568, 569, 570, 571, 572, 573, 574, 575, 576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 586, 587, 588, 589, 590, 591, 592, 593,
594, 595, 596, 597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629, 630, 631, 632, 633, 634, 635, 636, 637, 638, 639, 640, 641, 642, 643, 644, 645, 646, 647
};
uint16_t i = (y * kMatrixWidth) + x;
uint16_t j = XYTable[i];
return j;
}
// Increment the global hue value for functions that use it
byte cycleHue = 0;
byte cycleHueCount = 0;
void hueCycle(byte incr) {
cycleHueCount = 0;
cycleHue+=incr;
}
#define NUM_LEDS 558
// CRGB leds[NUM_LEDS];
#define PIN 9
int myCounter = 0;
int myCounter2 = 0;
int myCounter3 = 0;
void setup()
{
FastLED.addLeds<WS2811, PIN, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
}
void loop() {
FastLED.setBrightness(50);
//myLights();
slantBars();
// AllRunningLights();
// FastLED.setBrightness(50);
// FlashLights();
}
void slantBars() {
static byte slantPos = 0;
// startup tasks
// if (effectInit == false) {
// effectInit = true;
// effectDelay = 5;
// }
for (byte x = 0; x < kMatrixWidth; x++) {
for (byte y = 0; y < kMatrixHeight; y++) {
leds[XY(x, y)] = CHSV(cycleHue, 255, quadwave8(x * 32 + y * 32 + slantPos));
}
}
slantPos -= 4;
}
void RunningLights(byte red, byte green, byte blue, int WaveDelay) {
int Position=0;
for(int i=0; i<NUM_LEDS*3; i++)
{
if(myCounter<6) {
Position++; // = 0; //Position + Rate;
for(int i=0; i<NUM_LEDS; i++) {
// sine wave, 3 offset waves make a rainbow!
//float level = sin(i+Position) * 127 + 128;
setPixel(i,127,127,127);
float level = sin(i+Position) * 127 + 128;
setPixel(i,((sin(i+Position) * 127 + 128)/255)*red,
((sin(i+Position) * 127 + 128)/255)*green,
((sin(i+Position) * 127 + 128)/255)*blue);
}
showStrip();
myCounter = myCounter + 1;
}
else {
myCounter = 0;
return; }
}
}
void AllRunningLights() {
while(myCounter3<5) {
RunningLights(0x00,0x80,0xff, 10);
RunningLights(0xEE,0x00,0xEE, 10);
RunningLights(0xff,0xff,0xff, 10);
RunningLights(0xff,0x70,0x00, 10);
RunningLights(0xff,0x10,0x10, 10);
RunningLights(0x26,0xff,0x00, 10);
myCounter3 = myCounter3 + 1;
}
myCounter3 = 0;
return;
}
void myLights() {
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 128, 255) ); //1
showStrip();
}
void FlashLights() {
while(myCounter2<10) {
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 128, 255) ); //1
showStrip();
delay(100);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 0, 0) );
showStrip();
delay(40);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 238, 0, 238) ); //2
showStrip();
delay(100);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 0, 0) );
showStrip();
delay(40);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 255, 255, 255) ); //3
showStrip();
delay(100);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 0, 0) );
showStrip();
delay(40);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 255, 112, 0) ); //4
showStrip();
delay(100);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 0, 0) );
showStrip();
delay(40);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 255, 16, 16) ); //5
showStrip();
delay(100);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 0, 0) );
showStrip();
delay(40);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 38, 255, 0) ); //6
showStrip();
delay(100);
fill_solid( &(leds[0]), 558 /*number of leds*/, CRGB( 0, 0, 0) );
showStrip();
delay(40);
myCounter2 = myCounter2 + 1;
}
myCounter2 = 0;
return;
}
void showStrip() {
#ifdef ADAFRUIT_NEOPIXEL_H
// NeoPixel
strip.show();
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
// FastLED
FastLED.show();
#endif
}
void setPixel(int Pixel, byte red, byte green, byte blue) {
#ifdef ADAFRUIT_NEOPIXEL_H
// NeoPixel
strip.setPixelColor(Pixel, strip.Color(red, green, blue));
#endif
#ifndef ADAFRUIT_NEOPIXEL_H
// FastLED
leds[Pixel].r = red;
leds[Pixel].g = green;
leds[Pixel].b = blue;
#endif
}
void setAll(byte red, byte green, byte blue) {
for(int i = 0; i < NUM_LEDS; i++ ) {
setPixel(i, red, green, blue);
}
showStrip();
}
]
That sketch uses 1944 bytes of memory.
What are you using?
Why have you no capacitor across the LED strip?
It would also seem that you are trying to draw the power from the 5V line of the Arduino. That many LEDs take just under 39 Amps. The maximum you can draw from an Arduino's 5V line is less than 0.5 Amps.
trust me the wiring works fine for everything and i have a mega 2560. i've run 2 full light strips for it using an external power cord alongside the arduino, but whats wrong with the code?
nickb14:
trust me the wiring works fine for everything and i have a mega 2560. i've run 2 full light strips for it using an external power cord alongside the arduino, but whats wrong with the code?
The code is for a matrix but you have 2 full strips. How does that work?
.
i got the 2 to light up with different code, i have the matrix now