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Mastering Internet of Things

You're reading from  Mastering Internet of Things

Product type Book
Published in Mar 2018
Publisher Packt
ISBN-13 9781788397483
Pages 410 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Peter Waher Peter Waher
Profile icon Peter Waher
LinkedIn
Peter Waher is the founder of Little Sister®, a standards-based distributed social network, based on the principles of edge computing, privacy & information ownership, for humans and machines. Currently, Peter advises companies on topics such as privacy, the IoT and Smart Cities. He has worked for 24 years with computers and device communication, including low-level development in assembler for resource-constrained devices to high-level system design and architecture. His award-winning applications has attracted global attention, and he has been invited to speak at prestigious events.
See other products by Peter Waher

Table of Contents (24) Chapters

Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
1. Preparing Our First Raspberry Pi Project 2. Creating a Sensor to Measure Ambient Light 3. Creating an Actuator for Controlling Illumination 4. Publishing Information Using MQTT 5. Publishing Data Using HTTP 6. Creating Web Pages for Your Devices 7. Communicating More Efficiently Using CoAP 8. Interoperability 9. Social Interaction with Your Devices Using XMPP 10. The Controller 11. Product Life Cycle 12. Concentrators and Bridges 13. Using an Internet of Things Service Platform 14. IoT Harmonization 15. Security for the Internet of Things 16. Privacy 1. Other Books You May Enjoy Index

Connecting our lamp

Now that we know how a relay works, it's relatively easy to connect our lamp to it. Since we want the lamp to be illuminated when we turn the relay on (set D1to HIGH), we will use the NO and COM connectors, and let the NC connector be. If the lamp has a normal two-wire AC cable, we can insert the relay into the AC circuit by simply cutting one of the wires, inserting one end into the NO connector and the other into the COM connector, as is illustrated in the following figure:

Connecting a lamp

Note

Be sure to follow appropriate safety regulations when working with electricity.

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Authors (1)

Profile icon Peter Waher
LinkedIn
Peter Waher is the founder of Little Sister®, a standards-based distributed social network, based on the principles of edge computing, privacy & information ownership, for humans and machines. Currently, Peter advises companies on topics such as privacy, the IoT and Smart Cities. He has worked for 24 years with computers and device communication, including low-level development in assembler for resource-constrained devices to high-level system design and architecture. His award-winning applications has attracted global attention, and he has been invited to speak at prestigious events.
Read more
See other products by Peter Waher

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