Mini 5V Traffic Light LED Display Module

Mini 5V Traffic Light LED Display Module – Full Description

The Mini 5V Traffic Light LED Display Module is a compact signal indicator module featuring three high-brightness LEDs arranged like a real traffic signal — Red, Yellow, and Green. It is designed for learning electronics, Arduino projects, robotics, and signal indication systems.

This module operates at 5V DC and is fully compatible with Arduino, Raspberry Pi, ESP32, ESP8266, STM32, and other microcontrollers.

🔹 Product Overview

The module contains:

• 🔴 1 × Red LED

• 🟡 1 × Yellow LED

• 🟢 1 × Green LED

• Built-in current limiting resistors

• 4-Pin interface header

• Compact PCB with mounting holes

It is commonly used to simulate traffic signal systems in electronics and programming projects.

🔧 Key Features

• ✅ Operating Voltage: 5V DC

• ✅ Three independent LED indicators

• ✅ Built-in resistors (no extra resistor needed)

• ✅ Easy interface with microcontrollers

• ✅ Low power consumption

• ✅ Compact and lightweight design

• ✅ Clear LED color visibility

⚙️ Technical Specifications

🔌 Pin Configuration

Most versions have 4 pins:

• GND – Ground

• R – Red LED control

• Y – Yellow LED control

• G – Green LED control

To turn on an LED:

• Apply HIGH (5V) to the respective pin (depending on module design)

• Connect GND properly

💡 How It Works

Each LED can be controlled individually by sending a digital signal from a microcontroller.

Example:

• HIGH on R → Red LED ON

• HIGH on Y → Yellow LED ON

• HIGH on G → Green LED ON

You can program timing sequences to simulate a real traffic light system.

🛠 Applications

• Arduino traffic light projects

• School & university electronics labs

• Robotics indicator systems

• Signal status display

• Automation projects

• Learning digital output control

• STEM educational kits

📦 Package Includes

• 1 × Mini 5V Traffic Light LED Display Module

⚠ Important Notes

• Always connect GND properly.

• Do not exceed 5V input.

• Avoid reversing polarity.