Humeter

Humidity and temperature monitoring with Arduino and Socket.IO

Introduction

Humeter is a project that combines Arduino and Socket.IO, with the aim of taking data on humidity and ambient temperature, for showing it in a real-time web application.

Requirements

Hardware

• Arduino UNO or similar
• DHT22 sensor or similar

Software

• Node.js
• Bower

Assembly

Installation

Go to the project directory. Then, just enter the following commands in the terminal:

npm install
bower install

Configuration

Indicate the USB port you want to use (by default, /dev/ttyUSB0) in index.js, line 6.

Also, you can adjust the time interval between each reading, changing the argument of the call to delay() function in arduino/humeter.ino, line 27.

No need to worry about anything else, because the server adapts itself.

Start

1. Upload the sketch placed in arduino/humeter.ino to your Arduino and keep it connected to an USB port.
2. Go to the project directory and enter the following command in the terminal:

npm start

You must grant permissions to the server to read data via the USB port.