I have a WS2812B long LED strip and am having trouble getting it to turn on.
I attached a picture of my connections. I connected an external 5V power supply to both the arduino and the strip, I attached the ground of the power supply to the Arduino and the strip, I attached a capacitor between the ground and the 5V source, and I added a resistor between the LED strip and the arduino.
The code I am using is this:
#include <FastLED.h>
#define LED_PIN 7
#define NUM_LEDS 20
CRGB leds[NUM_LEDS];
void setup() {
FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
}
void loop() {
leds[0] = CRGB(0,255,0);
FastLED.show();
delay(500);
leds[1] = CRGB(0,0,255);
FastLED.show();
delay(500);
leds[2] = CRGB(255,0,0);
FastLED.show();
delay(500);
leds[3] = CRGB(255,0,0);
FastLED.show();
delay(500);
}
After it is done compiling/uploading, I get this message:
"Sketch uses 3612 bytes (11%) of program storage space. Maximum is 32256 bytes.
Global variables use 157 bytes (7%) of dynamic memory, leaving 1891 bytes for local variables. Maximum is 2048 bytes."
And nothing happens.
The reason I re-soldered the LED strip wires to the second LED is because I read somewhere that it's possible that if you don't have the capacitor/resistor you can damage the first LED so that no signal will flow through to the rest of the strip. I think this likely happened because I used a 5V plug-in to the arduino (not the current external power source) and the first LED did turn on, but stopped working after about 10 minutes and I did not have the proper resistor nor capacitor.
This is my first time using Arduino, and I'm not sure what I'm doing wrong.
Any help will be appreciated. Thanks!
