After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.

A Modulino library for Arduino and MicroPython is available, and pre-configured Arduino Cloud templates. The Arduino Nano Connector Carrier is sold on the Arduino store for $11.80 US or 13.3 Euros .

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.

Add a description, image, and links to the arduino-nano topic page so that developers can more easily learn about it. Curate this topic Add this topic to your repo To associate your repository with ...

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A factory reset is necessary if you’re upgrading to the latest Apple Watch, such as the Apple Watch Series 10, or if you just want a fresh start. But don't worry — it’s super easy!