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simple-0-9-counter-8a8898-en.md

Baby steps. That's the way to start. This easy project let's you get your feet wet with the Arduino Uno. It is a basic and easy to implement project requiring just a few components and a very basic understanding of electronics & microcontrollers. Just connect everything as mentioned and hopefully you'll have yourself a neat little confidence booster that counts the numbers from 0 to 9 at exactly one second intervals. This project gives you the confidence to try something a little more difficult.

My first attempt trying to understand the pin assignments on the 5611AH seven-segment display

GIF motion image

EXPANDED TECHNICAL DETAILS

Seven-Segment Display Control

This project provides a foundational lesson in digital logic and numeric visualization using a standard 1-digit 7-segment display.

  • Bitwise Pin Mapping: Instead of using 7 separate digitalWrite() calls for every number, the Arduino uses a bitmask array. For example, the number '0' is stored as 0b00111111, allowing the firmware to update the entire display in a single, efficient operation.
  • Incremental Logic: Manages a single physical button with integrated debounce software. Every press increments a counter variable (0-9). When it reaches 10, the Arduino resets the display to 0.

Circuit Optimization

  • Current-Limiting Hub: Explains the necessity of using individual 220Ω resistors for each LED segment to prevent uneven brightness and board damage.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Simple 0-9 Counter"
description: "Displays the numbers 0-9 on the display, at one second intervals implemented using 5611AH - 8-segment display"
author: "akhtar"
category: ""
tags:
  - "counter"
  - "easy"
  - "clock"
  - "basic"
  - "clocks"
views: 17133
likes: 1
price: 699
difficulty: "Easy"
components:
  - "1x Arduino UNO"
  - "2x Resistor 1k ohm"
  - "1x Solderless Breadboard Full Size"
  - "1x 7 Segment LED Display, InfoVue"
  - "10x Jumper wires (generic)"
tools: []
apps:
  - "1x Arduino IDE"
downloadableFiles: []
documentationLinks: []
passwordHash: "6f4d158109a904cbe8f59f063af28919eab56a8c5804da8c857717040bfee9a1"
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seoDescription: "Build a Simple 0-9 Counter with 5611AH - 8-segment display. Shows numbers 0-9 at one-second intervals."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/simple-0-9-counter-8a8898_cover.jpg"
lang: "en"