Build your own IoT

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Do curso por University of California San Diego

A internet das coisas: como chegamos aqui?

614 classificações

University of California San Diego

A internet das coisas: como chegamos aqui?

614 classificações

Curso 1 de 6 em Specialization Internet of Things

It is hard to imagine life without your Smartphone – you have come to rely on it so much – for your work; to stay in touch with family and friends; to capture and share those special moments; to find your way around in a new neighborhood. Did you ever wonder how and when all this happened? Or how and when GPS sensors came to be in your cell phone? In this course, we will explore the convergence of multiple disciplines leading to todays’ Smartphones. You will learn about the birth and evolution of Telephony Networks, Broadcast Networks (TV and Radio) and Consumer Electronics. We will discuss the impact of Internet, (multimedia) content, smartphones and apps on everyday lives. We will then look at how this emerging platform called the Internet of Things – wherein billions and trillions of devices communicating with each other and “the cloud” – could enable unprecedented, innovative products and services. Take this course if you want to understand what great new advances in mobile-enabled products will be coming our way! Learning Goals: This course provides a core grounding in how science and technology have developed to enable the Internet of Things – in a way appropriate for any learner. For those interested in developing further hands-on expertise in designing and developing for the Internet of Things, this course will provide a context to the discoveries and converging technologies that will springboard the next round of innovations. After completing this course, you will be able to: 1. Compare how the telephone system works (that is, peer-to-peer networks) with how media delivery works (that is, broadcast/multicast networks). 2. Explain the tradeoffs between circuit switched networks (that is, dedicated resources) and packet switched networks (that is, shared resources). 3. Tell interesting stories about key innovations that transformed the communications, entertainment and consumer electronics industries. 4. Explain how email, YouTube, SMS, etc. work. 5. Find resources for those wishing to do more of a “deep-dive” into the above topics.

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Future Outlook

Congratulations! You’ve made it to the last module in this course! At this point, you should know the history of the internet and many innovations that it has advanced with, but what is the Internet of Things anyway? That question and many more will be answered in this final course!

Introduction to Lesson 11:09

IoT: What the heck is it?8:36

Build your own IoT5:33

Specialization in a Nutshell6:23

Conheça os instrutores

Harinath Garudadri
Associate Research Scientist
Qualcomm Institute of Calit2, UC, San Diego
Ganz Chockalingam
Principal Engineer
Qualcomm Institute of Calit2, UC, San Diego

Hey, guys. In this clip we're gonna talk

a little about how you're going to go about building an IoT,

what kind of things you need.

So let's start off with some scenarios, some of the ideas you may come up with.

We talked about a sprinkler example in the previous lesson, the sprinkler

which is smart enough to know when it rains or when the soil needs water.

Or too, maybe a garage door opener, you may have some pet projects.

For example, I leave my garage door, some nights I forget to close it.

And wake up in the morning I see the door is still open and there are raccoons and

squirrels in there.

So you may want to come up with something where between 10 PM to 6 AM,

if it's open beyond a certain amount of time, it closes automatically.

Or a pet feeder project, where you may be out of town and

you want a cat to be fed at a certain time every day.

Or a surveillance project, where you are monitoring your house and

if it detects motion take a snapshot, send it to your phone as an MMS.

These are possibilities.

Maybe you may have a different idea for a selfie stick.

You can be a better selfie queen than Kim Kardashian.

So you may have all kinds of ideas.

Let's kind of figure out what do all these things need, right?

Some sort of a compute platform.

You need some sort of a small compute platform which is able to

receive information either in a wired or wireless fashion.

And two, being able to act upon it.

For example, maybe drive a motor or send a wireless signal or

fetch some information from the Internet.

And if you may need location information, you may need a GPS receiver.

In addition to that, cost is an issue.

You don't wanna buy a separate computer for that.

You want something small which is portable, you can move around.

Optimal in power.

You don't want it to suck up too much power.

What else? And of course, you want it to be cheap.

Add-on components easily available.

It may not have all of the functionality, you may buy third-party sensors, for

example, for motion detection or moisture detection.

And easily interfaced to these boards, maybe in a wireless fashion.

And so it should have some sort of all types of wireless connectivity

built into it.

So what are the options?

There's these kinds of requirements, and they should support the programming

environment you like to operate in based on your skill set.

So the options are, one, microcontrollers.

These are small devices where you program some logic in the computer.

Burn it, flash it to this thing, and it does.

Arduino's one popular board out there.

Second options are these single board computers.

The most popular one you might have heard of is the Raspberry Pi,

where you can put in Linux on it and do a bunch of things.

And third is you can just use your smartphone.

Do a whole bunch of things.

The only thing which may be lacking in there is you can not drive external

devices.

Everything will be most probably wireless unless you build

some custom hardware to plug into your phone.

But you can do a whole bunch of stuff with your smartphone.

In this course, what we're gonna use is the Arrow Electronics DragonBoard 410c.

It's powered by the Qualcomm Snapdragon processor.

I have one right here.

The reason we picked this board is it's actually a new kid on the block.

I shouldn't say new kid, it's a new dragon on the block.

It's kind of a Raspberry Pi on steroids.

The reason we like the board is it's got awesome built-in connectivity.

It has built in Wi-Fi, Bluetooth, and it's got even a GPS receiver

with an antenna in it.

Typically if you buy the Pi, you'll buy a Wi-Fi dongle and stick it in.

It's got couple of USB ports and it's very optimized power consumption.

So the coolest thing is it's the same processor

which drives pretty much every smartphone which powers this board as well.

It's the Snapdragon processor.

So it's very close to the smartphones you carry in your pocket,

this environment here.

The minor subtle difference is that it's optimized for power.

By default it puts out 1.8 volts.

The Pi typically puts out 3.3.

And the pitch on these pins are 2 millimeter and the Pi has 2.54 millimeter.

Other than differences like that, it's got great connection options.

So this is gonna form the hardware for this course.

Everything will be tailored around this board,

so to move along further in subsequent courses, you do need this board.

There are instructions where to buy this board.

This slide I kinda want to show if you take out your smartphone, open up

the hood, you'd find components which are very similar to what's in this board.

So this board by default comes with Android so

in other words you're comfortable programming in an Android environment,

this board is right up your alley.

In fact, you can install Linux in there too.

But so that kind of, this slide here shows the underlying,

what's in your smart phone, you'll find components similar to here.

So that kind of summarizes what it's going to take to built IoT in terms of

hardware and software.

So thank you.

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