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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 FREE CHAPTER 2. Connecting Things to the Raspberry Pi Zero 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

Controlling outputs with Raspberry Pi via Bluetooth


Things go a different route as soon as you’re trying to communicate with other electronic gadgets that uses Bluetooth modules connected to the serial port of the Raspberry Pi.

These modules are very cheap to buy, the actual module is the green board that sits on the breakout board in my model. The pure HC-05 will only work on 3.3V levels, not with 5V-TTL-levels. So one would need level shifters (again).

In this section, we will communicate the Raspberry Pi Zero to the Bluetooth module, and connect the pins TX and RX of the Raspberry Pi.

First, we need to configure the file of the system to make some changes in order to activate the communication of the Raspberry Pi Zero TX and RX:

Controlling lights from an Android Application

We need to download the Bluetooth Terminal, as shown in the following screenshot:

The following screenshot shows the results of sending the numbers 1, 2, 3, 4, 5, and 6:

The following image shows the final part of the project...

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