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How it Works »New Instructable »With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
How it Works »New Instructable »
In this application the relay is needed to allow more electrical energy to power the brake lite. You can use the Digital 5 pin on the arduino as a trigger to anything. If you had an LED connected to the Digital 5 pin and ground it would light when triggered. Hope that helps. Thanks for looking!
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