Node.js Learning through Making – Build a CPU Sensor

[Dave Johnson]

In this tutorial, I guide readers through the process of building a "CPU Sensor" using Node.js on a Raspberry Pi, emphasizing hands-on learning. The project begins with setting up the development environment in Visual Studio Code and writing a basic logging loop. As we progress, we incorporate the built-in 'os' module to measure CPU load, format the output as a percentage, and create a function to streamline the process. Finally, we stress-test the Raspberry Pi's CPU to observe real-time changes in load, demonstrating the practical application of Node.js in IoT projects.