5V LED Traffic Light Module

The 5V LED Traffic Light Module is a ready-to-use signal simulation board designed for Arduino, Raspberry Pi, and other microcontrollers. It features bright red, yellow, and green LEDs arranged like a real traffic signal, making it perfect for robotics competitions, road-safety demos, IoT prototypes, and classroom learning.

Built on a compact PCB with onboard current-limiting resistors, this module simplifies circuit design and provides plug-and-play operation for DIY electronics and educational projects.

This module is built for plug-and-play operation: each LED channel includes an onboard current-limiting resistor, allowing direct connection to the digital I/O pins of an Arduino, Raspberry Pi, ESP32, or other microcontroller without external circuitry. The 3-pin header (VCC, GND, Signal) makes wiring simple with standard jumper cables, enabling fast prototyping for traffic-management simulations, robot car competitions, or smart-city IoT demonstrations.

Because the LEDs can be switched independently through standard digital output pins, developers can program custom lighting patterns such as sequential traffic signals, pedestrian crossings, or hazard flashers. The module’s 5 V operating voltage ensures compatibility with most hobbyist and educational platforms while maintaining safe low-power operation for students and beginners.

This traffic light module is also ideal for STEM education: teachers can use it to introduce concepts such as logic control, timing loops, PWM brightness modulation, and event-driven programming. In robotics, it can serve as a status indicator, warning light, or interactive element for autonomous vehicles and mobile robots.

Whether you are creating a model city with IoT traffic control, adding a visual indicator to a robot, or demonstrating real-time embedded programming in a lab setting, the 5V LED Traffic Light Module delivers a reliable, high-visibility solution that combines simplicity with professional-grade performance

🔧 Technical Specifications

• Operating Voltage: 5 V DC

• LED Colors: Red, Yellow, Green

• LED Size: 5 mm high-brightness

• Current per LED: ~20 mA

• Interface: 3-pin header (VCC, GND, Signal)

• Board Size: ~35 mm × 25 mm

• Built-In Resistors: Yes, for current protection

• Compatibility: Works with Arduino, Raspberry Pi, ESP32, and other 5 V logic controllers

⚙️ Key Features & Advantages

• Realistic traffic light design for visual signaling.

• Simple digital pin control for each LED.

• Perfect for Arduino projects and Raspberry Pi.

• Integrated resistors for plug-and-play setup—no external components required.

• Great for STEM education, teaching programming and basic electronics.

🛠️ Applications & Use Cases

• Traffic signal simulation for robotics or model cities.

• IoT-based smart traffic management prototypes.

• Educational electronics to teach microcontroller control logic.

• Robotics competitions requiring signal indicators.

• Visual indicators for automation projects.

⚡ Safety & Precautions

• Connect only to regulated 5 V supply.

• Ensure correct pin connections (VCC, GND, signal).

• Avoid reverse polarity to protect LEDs and board.

🔗 Helpful Internal Links

• Get more Electronics Components for prototyping.

• Browse Arduino and Accessories for controllers.

• Find tools in Tools and Accessories for assembly.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The 5V LED Traffic Light Module offers a simple, realistic traffic signal solution with three bright LEDs and built-in resistors. Perfect for Arduino, Raspberry Pi, IoT, robotics, and educational projects, it makes creating interactive traffic control demos quick and easy.