0.56 Inch 4-Digit 7-Segment LED Display Common Anode (Red) – Raw 12-Pin Module for Arduino

Overview 

This 0.56-inch, 4-digit, 7-segment LED Display is a raw component designed for direct multiplexing architectures. In this Common Anode (CA) setup, each of the four digits shares a single common power pin ($V_{CC}$). By cycling power through the digit pins sequentially and pulling the segment pins (a through g) LOW, you can display any 4-digit numerical value. This raw display gives developers complete control over refresh rates, power consumption, and custom driver designs using shift registers like the 74HC595.

Key Features 

• Raw 12-Pin Layout: Direct access to individual digits and segments without intermediate controller constraints.

• Common Anode Internal Architecture: Ideal for pairing with sinking-current driver ICs, transistors (like the PN2222), or standard shift registers.

• Integrated Clock Colon / Decimal Points: Features individual decimal points for each digit, allowing for floating-point data or time readouts.

• Crisp Red Visibility: High-contrast segments offer uniform brightness under standard indoor lighting.

• Compact 0.56″ Character Height: The perfect standard dimension for dashboard readouts, panel meters, and portable laboratory test equipment.

Technical Specifications 

Understanding the 12-Pin Configuration 

Out of the 12 pins on the back of this component:

• 4 Pins control the common anodes for each of the individual digits (Digit 1, Digit 2, Digit 3, Digit 4).

• 8 Pins control the individual LED segments across the active digit (a, b, c, d, e, f, g, and DP/Decimal Point).