Description

4-Digit 7-Segment Display (Common Cathode): Bright, Customizable Numeric Readouts! 🔢🔴

This 4-digit 7-segment display is a versatile, high-visibility component perfect for DIY electronics, clocks, timers, and measurement systems. With bright red LEDs, common cathode design, and decimal points (DP) for precision, it offers crisp numeric output for projects requiring clear numeric feedback. While it lacks a built-in driver, its raw control flexibility allows integration with shift registers, dedicated driver ICs (e.g., MAX7219), or microcontroller GPIO pins.

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Key Features:

✅ 4 Digits + Decimal Points: Display numbers up to 9999 or use DPs for decimals (e.g., 12.34).
✅ High Brightness: Vivid red LEDs with 14.2mm digit height for easy readability.
✅ Low Power: Compatible with 3V–5V systems (requires current-limiting resistors).
✅ Common Cathode: Simplifies control with shared cathode pins for each digit.
✅ DIY-Friendly: No built-in driver—pair with shift registers (e.g., 74HC595) or driver ICs for multiplexing.

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Technical Specifications:

• Type: Common cathode
• Color: Red
• Forward Voltage (per segment): 1.8V (typical)
• Current per Segment: 20mA
• Pin Count: 12 pins (4 common cathodes, 8 segments + DPs)
• Dimensions: 50mm (L) × 19mm (W) × 10mm (H)
• Operating Voltage: 3V–5V DC

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Pin Configuration:

• Common Cathodes (4 pins): Digit 1, 2, 3, 4 (connect to ground via transistors for multiplexing).
• Segments (8 pins): A, B, C, D, E, F, G, DP (anodes, connect to +V via resistors).

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Applications:

⏲️ Digital Clocks/Timers: Build countdown timers, alarms, or stopwatches.
📊 Sensor Readouts: Display temperature, humidity, or voltage measurements.
🎮 Scoreboards: Track points in games or competitions.
🔧 DIY Counters: Monitor RPM, steps, or production units.
🔌 Voltage/Current Meters: Show real-time power stats.

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How to Use:

1. Multiplexing: Rapidly cycle through digits using transistors to ground each cathode.
2. Shift Registers/Drivers: Simplify control with a 74HC595 or MAX7219 for automated refreshing.
3. Resistors: Add 150–220Ω resistors to each segment to limit current and protect LEDs.

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Why Choose This Display?

• Bright & Clear: Large digits ensure visibility in any lighting.
• Total Control: Customize refresh rates and animations without driver limitations.
• Low Cost: Affordable solution for numeric displays.
• Expandable: Chain multiple displays for larger projects.

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Package Includes:

1x 4-Digit 7-Segment Display (Common Cathode)

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Order Now and Light Up Your Projects! 🚀

Perfect for makers, educators, and engineers, this 4-Digit 7-Segment Display combines simplicity and flexibility for all your numeric display needs. Grab yours today and build smarter, clearer interfaces! 🌟