This LED module features two high-brightness LEDs in red and green, connected via a common cathode. Both LEDs share the same ground (negative) connection, simplifying wiring and integration into microcontroller projects.
By controlling each color individually—or both simultaneously—you can create clear visual status indicators for various system states.
Key Features
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Dual-color LED (Red + Green)
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Common cathode configuration
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Compact and easy to integrate
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Ideal for status indication and signal display
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Suitable for Arduino and other microcontrollers
Technical Specifications
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Forward Voltage: 2.0V – 2.5V
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Forward Current: 20 mA (per LED)
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Configuration: Common Cathode
Recommended Series Resistors
To protect the LEDs, a current-limiting resistor is required depending on your input voltage:
| Input Voltage |
Series Resistor |
| 3.3V |
120 Ω |
| 5V |
220 Ω |
Pin Assignment Example (Arduino)
| Arduino |
Module |
| Pin 9 |
Green LED |
| Pin 10 |
Red LED |
| GND |
Common Cathode |
Each LED can be controlled using digital output pins. PWM can also be used to adjust brightness.
Applications
This dual-color LED module provides a simple, reliable, and effective way to add visual feedback to your electronic designs.
