LED Traffic Light Signal Module with Digital Output

The LED Traffic Light Signal Module with Digital Output features Red, Yellow, and Green LEDs sized 10x7mm each, wired in a common cathode configuration, operating from 5V DC with Red and Yellow LEDs drawing 13mA each and the Green LED drawing 25mA. The traffic light module’s common cathode design means all three LEDs share a single ground connection, while each LED’s anode connects to a separate Arduino digital pin — controlling which light is on simply means setting the corresponding pin HIGH or LOW.

The traffic light sensor project’s most notable detail is the Green LED’s higher 25mA current draw compared to 13mA for Red and Yellow — this reflects a common characteristic of green LEDs, which often need higher forward current to achieve comparable visual brightness to red and yellow LEDs at the same supply voltage. This led traffic light signal module’s three independently controllable LEDs let Arduino code implement the classic red-yellow-green sequencing with adjustable timing delays, simulating real traffic signal behavior for the led street light sensor demonstrations.

this led traffic light arduino sensor module typically requires current-limiting resistors on each LED’s anode pin if not already integrated onboard, since driving LEDs directly from a 5V Arduino pin without resistors risks exceeding the LED’s rated current and shortening its lifespan. StemVolt porvide, this module is well-suited for engineers building traffic signal simulation systems and practical sequential LED control electronics projects.

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• Explore the Light, Colour and Camera Sensors

Features:

• Red, Yellow, Green LEDs for classic traffic light sequencing
• Common cathode design simplifies wiring with shared ground pin
• Independent control of each LED via separate Arduino digital pins
• 5V DC compatible with standard Arduino and similar boards
• Compact 10x7mm LED size suits classroom and demo models

Technical Specifications:

 Applications:

• Traffic Light Module used for Arduino signal sequencing demo build
• College project uses traffic light sensor project for India traffic simulation
• STEM kit uses led traffic light signal module for classroom learning model
• Smart city demo uses led street light sensor for signal control project
• Robotics club uses led traffic light arduino sensor for intersection model build

Package Includes:

• 1 x LED Traffic Light Signal Module