Building a motion sensor with the Pi Zero

The first module that we are going to assemble in this chapter is the motion sensor module. These modules will be deployed in key parts of your home, to detect any intruder in your home.

The hardware configuration for this part will actually be very simple. First, connect the VCC pin of the motion sensor to a 3.3V pin of the Raspberry Pi. Then, connect the GND pin of the sensor to one GND pin of the Pi. Finally, connect the OUT pin of the motion sensor to the GPIO17 pin of the Raspberry Pi. You can refer to the previous chapters to find out about pin mapping of the Raspberry Pi Zero board.

This is the final result:

Let's now see how to configure this module so we can access it remotely through WiFi. This application will be based on the aREST framework again, which we already saw in the previous chapters of the book.

Here is the complete code for this part:

// Modules
var express = require('express');

// Express app
var app = express();

// aREST
var...