CJMCU2814 WS2812B 2×2 4 Piece RGB LED

Description

What it is

The CJMCU2814 WS2812B 2×2 RGB LEDs are high-density RGB LED modules that allow for the creation of complex and interactive lighting effects. These modules are ideal for decorative or interactive lighting projects.

Features

• CJMCU2814 WS2812B 2×2 RGB LEDs
• Ideally suited for Arduino and ESP projects

What it is for

These LED modules can be used to create interactive RGB chandeliers, decorative lighting effects, or any other project that requires precise control of color and light intensity. They are compatible with Arduino and ESP, making programming simple and efficient.

Tutorial: How to use CJMCU2814 WS2812B

The CJMCU2814 WS2812B is a high-density RGB LED module that allows for the creation of complex lighting effects. Ideal for interactive and decorative lighting projects.

What you need

• Arduino Uno or compatible
• USB cable
• M/F jumpers

Steps

1. Connect the Arduino to the computer via USB cable.
2. Connect the CJMCU2814 WS2812B module to the Arduino digital pins using jumpers: data (D), GND and 5V.
3. Install the Adafruit NeoPixel library in the Arduino software.
4. Upload the example sketch provided by the library to the Arduino.

Example code

Adafruit_NeoPixel strip = Adafruit_NeoPixel(4, PIN_Dati); // Verifica sul datasheet il numero di LED e pin dati
void setup() {
  strip.begin();
}
void loop() {
  strip.setPixelColor(0, strip.Color(255, 0, 0));
  strip.show();
}

Mini project

Create an interactive RGB chandelier with the CJMCU2814 WS2812B and a light sensor.

Common mistakes

• Connecting the module to the wrong pin.
• Not installing the necessary library.
• Instantiating too many LEDs in the strip variable.
• Omitting calls to strip.show() to update the LEDs.

Recommended accessories

• Arduino Uno
• Adafruit NeoPixel library
• Light Dependent Resistor (LDR) sensor
• M/F jumpers

Frequently asked questions

How can I change the color of the LEDs?
Use the strip.setPixelColor() function. Check the datasheet for details.

Which digital pins of the Arduino should I use?
You can use any digital pin, but avoid dedicated ones like RX and TX if not necessary.