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Detailed Product Description:

The 7 Segment LED Display is a fundamental component for any electronics project that needs to show numerical information in a clear and effective way. This single-digit module, available in a vibrant red color, is a versatile solution for a wide range of applications, from digital clocks and timers to counters and simple instrument readouts. Its most important technical feature is its configuration, which comes in two main types: Common Cathode and Common Anode.

The key distinction between the two lies in their internal wiring and control logic. A Common Cathode display has all its LED cathodes connected to a single common ground pin. To illuminate a segment, you must apply a HIGH signal (e.g., +5V) to its corresponding anode pin. This configuration is widely popular as it aligns with the standard HIGH/LOW logic of most microcontrollers like Arduino, making it easier to program. In contrast, a Common Anode display connects all its LED anodes to a common power pin. To light a segment, you must apply a LOW signal (GND) to its cathode pin, which requires inverted logic in your code.

Regardless of the type, each LED segment requires a current-limiting resistor to protect it from being damaged. The display's simplicity and clear-cut pinout make it perfect for educational kits and DIY electronics projects. You can drive the segments directly from a microcontroller's I/O pins or, for more complex setups, use a dedicated driver IC such as a MAX7219 to save pins and simplify your circuit. Whether you're a beginner or an experienced maker, this reliable 1 digit red LED display provides the perfect visual feedback for all your projects.

The 7 Segment Display Module is a simple and effective way to display numeric data in embedded systems. Each segment is made of a bright red LED, arranged to form numbers (0-9) and some alphabetic characters. This module is widely used in timers, digital clocks, scoreboards, counters, and voltage displays.

Available in Common Cathode (CC) or Common Anode (CA) configurations, it can be easily driven using transistors, shift registers (like 74HC595), or microcontrollers such as Arduino and STM32.

Key Features:

• Single-digit 7-segment display with clear red LED segments

• Available in Common Cathode or Common Anode versions

• Compatible with Arduino, Raspberry Pi, 8051, AVR, STM32, ESP32

• Ideal for displaying numbers, counters, timers, and digital readouts

• Low power consumption and easy breadboard mounting

Technical Specifications:

How to Use with Arduino:

Wiring Example (Common Cathode):

Use 220Ω resistors in series with each segment to prevent LED damage.

Simple Arduino Code:

int seg[] = {2,3,4,5,6,7,8};  // A to G

byte digits[10][7] = {
  {1,1,1,1,1,1,0}, // 0
  {0,1,1,0,0,0,0}, // 1
  {1,1,0,1,1,0,1}, // 2
  {1,1,1,1,0,0,1}, // 3
  {0,1,1,0,0,1,1}, // 4
  {1,0,1,1,0,1,1}, // 5
  {1,0,1,1,1,1,1}, // 6
  {1,1,1,0,0,0,0}, // 7
  {1,1,1,1,1,1,1}, // 8
  {1,1,1,1,0,1,1}  // 9
};

void setup() {
  for(int i = 0; i < 7; i++) pinMode(seg[i], OUTPUT);
}

void loop() {
  for(int num = 0; num < 10; num++) {
    for(int i = 0; i < 7; i++) {
      digitalWrite(seg[i], digits[num][i]);
    }
    delay(1000);
  }
}

Applications:

• Digital Clocks

• Counters and Timers

• Voltage or temperature displays

• Electronic meters and readouts

• Arduino and embedded system displays

Package Includes:

• 1 × 7-Segment LED Display (Common Cathode or Anode)