Arduino HC-SR04 + LED
In this tutorial, I will show you how you can build a motion-detecting LED using an ultrasonic sensor (HC-SR04). The parts for this build are provided by KumanTech, you can find them in their Arduino UNO Kit. Parts needed 1 x Arduino board (I'm using an Arduino Uno)1 x LED (The color doesn't matt...By: Aleksandar Tsvetkov
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