Countdown Timer

Wire up the Arduino as seen above.

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Step 1: Upload Code

Upload the following code using the Arduino app.

Step 2: Enjoy

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    Cool project. If you want to make the video easier for people to view, you can upload it to a sight light YouTube and then embed the video in the Instructable using the Embed Video tool in the step editor. Then people will be able to view the video right on the page without having to download it.