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Internet of Things Programming with JavaScript

You're reading from   Internet of Things Programming with JavaScript Get the best out of Arduino and Raspberry Pi Zero to develop Internet of Things projects using JavaScript

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Product type Paperback
Published in Feb 2017
Publisher Packt
ISBN-13 9781785888564
Length 298 pages
Edition 1st Edition
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Author (1):
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Ruben Oliva Ramos Ruben Oliva Ramos
Author Profile Icon Ruben Oliva Ramos
Ruben Oliva Ramos
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Table of Contents (10) Chapters Close

Preface 1. Getting Started with Raspberry Pi Zero 2. Connecting Things to the Raspberry Pi Zero FREE CHAPTER 3. Connecting Sensors - Measure the Real Things 4. Control-Connected Devices 5. Adding a Webcam to Monitor Your Security System 6. Building a Web Monitor and Controlling Devices from a Dashboard 7. Building a Spy Police with the Internet of Things Dashboard 8. Monitoring and Controlling Your Devices from a Smart Phone 9. Putting It All Together

Measuring temperature, humidity, and light and displaying data on an LCD


In this section, I will teach you how to monitor temperature, humidity, and light detection on an LCD screen.

Hardware and software requirements

In this project, you will use an Arduino UNO board; but you can also use an Arduino MEGA, which also works perfectly.

For temperature reading,  we require a DHT11 sensor, a resistor of 4.7k, a photoresistor (light sensor), and a 10k resistor.

It also requires a 16 x 2 LCD screen, where you performed the tests; I used an I2C communication module for the screen interfaced with Arduino card. I recommend using this communication since only two pins of Arduino are required for sending data:

Finally, it requires a breadboard and male-male and female-male cables for connections.

Here is the list of components for the project:

  • Arduino UNO

  • Temperature and humidity sensor DHT11

  • LCD Screen 16 x 2

  • Module I2C for LCD

  • A breadboard

  • Cables

We connect the different components:

Here, we can see the image...

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