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Arduino Countdown Timer

Arduino Countdown Timer shows us how to build a 2-digit countdown timer using Arduino.

In this Instructables guide I will show you how to make your own Arduino two digit countdown timer. I made my own circuit by using the ATmega328 micro controller but this is an optional step. In this guide I will help you to make it easily on breadboard by using the Arduino uno board!

Arduino Countdown Timer – [Link]

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