Building Smart Homes with Raspberry Pi Zero

Storing sensor data

Displaying the current measurements from the sensor is nice, but what is even better is to actually store that data inside a database. In this section, we are going to see how easy it is to do this with Node.js.

As a database, we'll simply use NeDB here, which is a really simple database for Node.js that is completely stored in memory, but you can also save the entire database in a file.

The code is actually very similar to what we saw in the previous section. However, here, we'll first import the database module, and then insert data inside the database when a measurement is done:

var Datastore = require('nedb') , db = new Datastore({ filename: 'path/to/datafile', autoload: true }); sdfsd var readout = sensorLib.read(); // Log ...