KY-011 Two-Color Red & Green 5mm LED Module for Arduino

KY-011 Two-Color Red & Green LED Module for Arduino

Buy the KY-011 Two-Color LED Module online in Pakistan from Robostan.pk. This compact dual-color LED module is designed for Arduino, Raspberry Pi, ESP32, robotics, electronic status indicators, and DIY electronics projects.

The KY-011 Bi-Color LED Module features a 5mm LED package containing two separate light-emitting elements: one red and one green. Both LEDs share a common cathode, allowing them to be controlled independently through compatible microcontroller output pins.

By activating the red or green LED individually, or controlling both simultaneously using PWM signals, developers can create different visual status indications, including red, green, and mixed yellow-orange colors.

Key Features

• KY-011 two-color LED module
• Red and green LED elements in one 5mm package
• Common-cathode LED configuration
• Three-pin interface
• Independent red and green control
• Supports PWM brightness adjustment
• Produces mixed yellow-orange light when both colors are activated
• Suitable for 3.3V and 5V microcontroller systems with current-limiting resistors
• Compact and lightweight PCB
• Easy integration into Arduino projects
• Suitable for electronic status displays
• Useful for robotics and automation indicators
• Ideal for educational electronics experiments

Technical Specifications

• Product Name: KY-011 Two-Color LED Module
• Model Number: KY-011
• Module Type: Dual-Color LED Module
• LED Colors: Red and Green
• LED Diameter: 5mm
• LED Configuration: Common Cathode
• Typical Forward Voltage: 2.0V to 2.5V
• Rated Forward Current: 20mA per LED
• Interface: 3 Pins
• Control Method: Digital Output / PWM
• Recommended Resistor for 3.3V: 120 Ohm per Color
• Recommended Resistor for 5V: 220 Ohm per Color
• Output: Visible Red, Green or Mixed Light
• Compatible Controllers: Arduino, ESP32, Raspberry Pi and Other Suitable Microcontrollers
• Mounting: PCB Breakout Module

Applications

• Arduino LED indicator projects
• Robotics status indication
• Electronic warning and notification lights
• Battery status indication
• Traffic light demonstrations
• Smart home automation projects
• Microcontroller output testing
• DIY electronic control panels
• Educational PWM experiments
• Raspberry Pi GPIO projects
• ESP32 electronic indicators
• Embedded electronics prototyping

How Does the KY-011 Two-Color LED Work?

The KY-011 Red Green LED Module contains two LED elements within one package. These LEDs share a common negative connection, known as a common cathode.

Each LED has an independent positive connection that can be controlled through a suitable microcontroller output.

• Red Input Activated: The LED emits red light.
• Green Input Activated: The LED emits green light.
• Both Inputs Activated: The emitted colors mix visually to produce a yellowish or orange appearance.
• Both Inputs Off: The LED remains off.

By using PWM signals, the brightness of each color can be adjusted independently to create different visual effects.

KY-011 Module Pinout

A standard common-cathode KY-011 module provides three connections:

• Red LED: Positive connection for the red LED element
• Green LED: Positive connection for the green LED element
• GND: Common cathode / shared ground connection

Important: The order and markings of the pins may vary between PCB manufacturers. Check the module's printed labels and connections before use.

Arduino Compatibility

The KY-011 module is compatible with Arduino UNO, Nano, Mega, and other suitable development boards.

Two Arduino digital output pins can independently control the red and green LED elements.

Using PWM-capable output pins allows software-controlled brightness adjustment and simple color-mixing effects.

Suitable current-limiting resistors must be connected in series with the LED inputs to prevent excessive current.

Current-Limiting Resistor Requirements

The KY-011 LED elements must not be connected directly across a power supply without suitable current limiting.

For common module versions, the following series resistor values are recommended:

• 3.3V Control: Approximately 120 Ohm per LED
• 5V Control: Approximately 220 Ohm per LED

Use a separate resistor for the red and green LED connections. Confirm that the resulting current is within the GPIO and LED ratings.

KY-011 vs KY-016 RGB LED Module

The KY-011 and KY-016 are both multicolor LED modules, but they offer different color capabilities.

• KY-011: Contains red and green LED elements with a shared cathode.
• KY-016: Contains red, green, and blue LED elements for a wider range of color combinations.

Choose the KY-011 for simple dual-color indicators and status displays. For projects requiring full RGB color control, consider a suitable RGB LED module instead.

Why Choose the KY-011 LED Module?

Two Colors in One LED: Saves space compared with installing separate red and green indicators.

Simple Digital Control: Each color can be switched independently using appropriate controller outputs.

PWM Brightness Control: Allows fading and color-mixing effects.

Compact PCB: Convenient for embedded electronics and robotics projects.

Educational Value: Suitable for learning digital output control, LED circuits, and PWM techniques.

Important Usage Notes

• Use suitable current-limiting resistors for each LED element.
• Do not exceed the LED's rated forward current.
• Verify the pinout before connecting the module.
• The KY-011 is a two-color LED, not a full RGB module.
• The forward voltage is not the same as the complete circuit supply voltage.
• Use GPIO voltage levels compatible with the selected resistors and LEDs.
• This module is an output indicator and does not detect light, movement, or other physical conditions.
• Do not connect directly to AC mains or high-voltage supplies.

Package Contents

• 1 x KY-011 Two-Color Red and Green LED Module

Buy KY-011 Two-Color LED Module in Pakistan

Looking for a KY-011 Two-Color Red Green LED Module in Pakistan? Shop online at Robostan.pk for LED modules, Arduino sensors, microcontrollers, electronic components, and robotics accessories.

The KY-011 is a useful component for students, engineers, makers, and electronics enthusiasts building indicator lights, control panels, educational circuits, and automation projects.

Order your KY-011 LED Module from Robostan.pk with nationwide delivery across Pakistan, including Lahore, Karachi, Islamabad, Rawalpindi, Faisalabad, Multan, Peshawar, and other cities.

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