How to Use Adafruit LED Sequin - Ruby Red: Examples, Pinouts, and Specs

Introduction

The Adafruit LED Sequin - Ruby Red is a compact, luminous LED designed to add eye-catching visual indicators to various projects. With its vibrant red glow, it is particularly popular in wearable electronics and decorative applications. The LED Sequin is easy to sew onto fabric or attach to other materials, making it versatile for hobbyists and designers alike.

Explore Projects Built with Adafruit LED Sequin - Ruby Red

Use Cirkit Designer to design, explore, and prototype these projects online. Some projects support real-time simulation. Click "Open Project" to start designing instantly!

Arduino Nano Controlled Sound and Light Effects System with NeoPixel LEDs

This circuit features an Arduino Nano microcontroller connected to a series of WS2812B LEDs, Adafruit NeoPixel Jewels, and Sticks, forming an addressable LED array. The Arduino controls the LED patterns and sequences, and interfaces with an Adafruit Audio FX Mini Sound Board for audio playback, which is amplified by an Adafruit PAM8302 amplifier connected to piezo speakers. The circuit includes toggle and push switches for user interaction, and uses a lipo battery with MP1584EN power regulators for power management. The embedded code on the Arduino facilitates complex lighting effects and sound playback, responding to switch states and button presses to create an interactive experience.

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Arduino-Controlled WS2812 RGB LED Strip with Red Pushbutton and Battery Power

This circuit uses an Arduino UNO to control a WS2812 RGB LED strip and a red pushbutton. The Arduino drives the LED strip to display various lighting patterns, including blinking red LEDs and a rainbow cycle, while the pushbutton is used as an input to the Arduino. The LED strip is powered by a 12V battery.

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Arduino Mega 2560 and Raspberry Pi 4B Controlled WS2812 RGB LED Strip

This circuit features an Arduino Mega 2560 microcontroller programmed to control a WS2812 RGB LED strip and a white LED, indicating status or providing user feedback. The Arduino and the LED strip are powered by a common 5V supply, and the circuit includes interfacing with a Raspberry Pi 4B for potential communication or coordination between the two boards.

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Arduino UNO Controlled WS2812 RGB LED Strip with Pushbutton Interaction

This circuit uses an Arduino UNO to control a WS2812 RGB LED strip, powered by a 12V battery. The Arduino is programmed to make specific LEDs blink red and perform rainbow color dimming effects, with a pushbutton connected to the Arduino for additional control.

Open Project in Cirkit Designer

Common Applications and Use Cases

• Wearable electronics (e.g., costumes, fashion accessories)
• Decorative lighting for events and parties
• Indicator lights for small-scale projects
• Educational projects to teach basic electronics and sewing with conductive thread

Technical Specifications

Key Technical Details

• Color: Ruby Red
• Forward Voltage: Typically 2.0-2.5V
• Current: 5mA (max 20mA)
• Brightness: 500-600 mcd
• Viewing Angle: ~120 degrees

Pin Configuration and Descriptions

Usage Instructions

How to Use the Component in a Circuit

1. Power Supply: Connect the positive power supply to the "+" pin of the LED Sequin. Ensure that the voltage is within the specified forward voltage range.
2. Current Limiting: Place a current-limiting resistor in series with the LED to prevent exceeding the maximum current rating. A resistor value of 270Ω to 560Ω is recommended for a 5V supply.
3. Ground Connection: Connect the "-" pin of the LED Sequin to the ground of the power supply.
4. Testing: Power on the circuit to test the LED Sequin. It should emit a bright red light if connected correctly.

Important Considerations and Best Practices

• Do not exceed the maximum current rating of 20mA to avoid damaging the LED.
• When sewing with conductive thread, ensure there are no short circuits between the "+" and "-" connections.
• If using with a microcontroller like an Arduino UNO, use a digital pin to control the LED with a proper current-limiting resistor.

Example Code for Arduino UNO

// Define the pin connected to the LED Sequin
const int ledPin = 9; // Can be any digital pin

void setup() {
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output
}

void loop() {
  digitalWrite(ledPin, HIGH); // Turn on the LED
  delay(1000);                // Wait for 1 second
  digitalWrite(ledPin, LOW);  // Turn off the LED
  delay(1000);                // Wait for 1 second
}

Troubleshooting and FAQs

Common Issues

• LED not lighting up: Check the polarity of the connections. Ensure the "+" pin is connected to the positive supply and the "-" pin to the ground.
• LED is dim: Verify that the power supply voltage is within the forward voltage range and that the current-limiting resistor is correctly calculated.
• LED burned out: This may occur if the current exceeds the maximum rating. Always use a current-limiting resistor.

Solutions and Tips for Troubleshooting

• Double-check all connections for proper polarity and secure soldering or attachment.
• Use a multimeter to measure the voltage across the LED and the current through the circuit.
• If using conductive thread, ensure there are no frayed ends that could cause shorts.

FAQs

Q: Can I power the LED Sequin directly from an Arduino pin? A: Yes, but ensure you use a current-limiting resistor and do not exceed the maximum current rating of the pin (typically 20mA).

Q: How do I attach the LED Sequin to fabric? A: You can sew the LED Sequin onto fabric using conductive thread, making sure to connect the "+" and "-" pins to your power supply and ground, respectively.

Q: Is it possible to control the brightness of the LED Sequin? A: Yes, you can control the brightness by using pulse-width modulation (PWM) on a digital pin of a microcontroller like an Arduino. Use the analogWrite() function to adjust the duty cycle.