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I have connected the Servos power rails to another Arduino board (red colour) and connected the Bluetooth module HC-05 and Ultrasonic sensor HC-SR04 to the Arduino mega. CAUTION: Powering up all these ...
Now, grab your Arduino Nano, plug in the USB cable, and upload the code that will make your DIY radar system actually work. The code is fairly long and we have included it at the end of this tutorial.
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