Why aren't all LEDs controlled?
Posted: Thu Jul 17, 2025 1:34 pm
I have an ESP32, a BTF-LIGHTING WS2812B 5M LED light strip and a 5V 10A RS-50-50 power supply unit.
I connect it like this:
And I add this program:
Only the first 19 LED'S are controlled. The rest of the 140 LED's remain dark.
I tried with two different ESP32 with same result.
What could be the cause?
I connect it like this:
And I add this program:
Code: Select all
#include <FastLED.h>
#define NUM_LEDS 20
#define DATA_PIN 2
CRGB leds[NUM_LEDS];
void setup()
{
FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
FastLED.setBrightness(128);
}
void loop()
{
for(int i = 0; i <140; i++)
{
leds[i] = CRGB::Blue;
FastLED.show();
delay(50);
}
delay(50);
for(int i = 0; i <140; i++)
{
leds[i] = CRGB::Black;
FastLED.show();
delay(50);
}
}I tried with two different ESP32 with same result.
What could be the cause?