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traffic-light-with-counter-4931b2-en.md

When I tried to make a traffic light circuit, it was with a counter IC and many more transistors. I couldn't make it that time, but when I met an arduino for the first time, I realized that I can make one much more easier and even add some extra options, so at the end, I reached this:

EXPANDED TECHNICAL DETAILS

Integrated Countdown Safety

This upgrade to the standard traffic light includes a numeric countdown display, commonly seen in modern smart cities to reduce driver anxiety.

  • Dual-Display Management: The Arduino manages the standard R/G/Y LEDs while simultaneously driving a 7-segment display or an I2C LCD. The countdown is synchronized with the light phase, automatically resetting for each transition.
  • Variable Cycle Timing: Features an IR remote or button to change the "Phase Duration" (e.g., more green time during peak hours), demonstrating the flexibility of programmable traffic controllers.

Logic Interlock

  • Failsafe Transition: The firmware includes a 2-second "All Red" clearance interval to ensure all simulated vehicles have cleared the intersection before the next phase begins.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Traffic light with counter"
description: "An led traffic light with with extra counter liquid crystal LCD."
author: "azaz84ok55"
category: ""
tags:
  - "lights"
  - "cars"
  - "clocks"
  - "passenger vehicles"
  - "monitoring"
views: 2804
likes: 0
price: 699
difficulty: "Easy"
components:
  - "1x Arduino UNO"
  - "1x Resistor 220 ohm"
  - "1x Jumper wires (generic)"
  - "1x Breadboard (generic)"
  - "1x 5 mm LED: Yellow"
  - "1x 5 mm LED: Green"
  - "1x 5 mm LED: Red"
  - "1x Standard LCD - 16x2 White on Blue"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles: []
documentationLinks: []
passwordHash: "9e74743624b0ae3bb2f7624655a95ecbdbe49be48af218677fc8b0f7576b13d8"
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seoDescription: "Arduino traffic light project with a countdown timer displayed on a liquid crystal LCD. Simple DIY LED traffic signal."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/traffic-light-with-counter-4931b2_cover.jpg"
lang: "en"