Outdoor test of system

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From the course by University of California San Diego

Internet of Things Capstone V2: Build a Mobile Surveillance System

ratings

University of California San Diego

Internet of Things Capstone V2: Build a Mobile Surveillance System

ratings

Course 6 of 6 in the Specialization Internet of Things

In the Capstone project for the Internet of Things specialization, you will design and build your own system that uses at least 2 sensors, at least 1 communication protocol and at least 1 actuator. You will have a chance to revisit and apply what you have learned in our courses to achieve a robust, practical and/or fun-filled project. We absolutely encourage you to design whatever you can think up! This is your chance to be creative or to explore an idea that you have had. But if you don’t have your own idea, we provide the description of a surveillance system, for you to build. We will participate in the Capstone with you by building a surveillance system that features an off-grid solar powered workstation that will serve as a hub to multiple surveillance sensors. You will be able to demonstrate the knowledge and skills you have gained in this course through delivery of industry-appropriate documents such as System Design documents and Unit Test reports. Additionally, you will be asked to describe and show case your project as a short video presentation – appropriate for demonstrating your knowledge and technical communication skills. Learning Goals: After completing this Capstone, you will be able to: 1. Design systems using mobile platforms. You will gain experience in documenting and presenting designs. 2. Develop systems that interface multiple sensors and actuators to the DragonBoard™ 410c system and develop the necessary software to create a fully functional system. 3. Specify unit tests and system tests, run tests and prepare Test Reports as are commonly done by those working in this industry. 4. Gain experience (and feedback!) in making technical presentations.

From the lesson

Capstone, Part 2 - Getting set up

In this module you will get to see everything! All of the components we purchased for our project as well as some alternative that might help you cut the price or increase the power of your own system. Once we look at everything we will be using to build our system, we will quickly put it together and test it outside in the sun.

Introduction to Part 21:46

What's in the box?6:19

Back in the box!12:25

Outdoor test of system8:01

Wrapping up the capstone2:22

Meet the Instructors

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

Here we are outside.

It's a nice sunny day here in San Diego.

Bit of a change of scenery compared to what you're used to seeing,

us in the studio in front of a big black curtain.

But, we need to demo this and we need sun for that, so here you go.

We have the same box that you got to see inside the studio,

only this time you are going to see it working a little better considering

the we got all this light out.

So what I'm going to do is I'm going to open it up and

we are going to take a glance at the charge controller inside.

Now compared to what you saw in the studio there wasn't enough light,

there wasn't enough power generated by the solar panels for

this to be on without the battery being hooked up.

But, as you can see, let me get this out of the way,

as you can see the battery isn't even hooked up right now, and we're getting

plenty of energy from the solar panels to keep this charge controller on.

You can see the panel to the battery to the load.

In a minute this is going to actually detect that the battery is not hooked up,

and it's unable to charge anything.

This port will start blinking, the charge thing will start blinking.

And this whole system will eventually start to kind of falter,

because it's not going to detect the battery.

However, for the mean time this is fine.

We can see that everything's working.

So, what do we want to do with this?

We want to first hook up the battery and

we want to show that it's actually going to be charging the battery.

So here we go, I'm going to hook this up.

Boom.

Battery's going in.

Red to red.

Black to black.

And there's an immediate drop in the voltage here on the charge controller.

You can see it was at, I think, 17 or 18.

It dropped to 13.9.

It means that the battery does need some juice.

So, it's forming juice.

Then you can see right here also that says bulk,

the panels are in fact charging, the light here is blinking.

You have a fully functional system.

Something cool I wanted to kind of show you here and I'll click over here to,

let me see.

So, here you have b 12.9.

So 12.9 is kind of low for this battery.

That's the voltage of the battery.

We can actually confirm that with our multi-meter.

Pop this on.

kind of prop this up here.

Let's see if I can get this to stay.

There we go, see how long we can get that to stay.

So, 12.9, I'm actually hook this directly to the battery and

you'll see that were also matching.

I'm going to get it.

Where am I going here?

Okay, well I'm going to lift this up a little bit and just do it myself manually.

So, I unplug it for a second.

We want to see that it's matching.

So there you go, 12.96.

So, I unhook the battery for a second just so we can see the charge control is in

fact getting the right numbers from the battery.

All right, now, we're all hooked up here.

Battery's hooked up into the charge controller.

The solar panels are in the charge controller.

Inverter is on the charge controller.

Let's get our DragonBoard booted up so we can at least maybe do something here.

So I'm taking some of this stuff out of the way.

We have our keyboard.

We have our monitor.

because we want to show that the inverter's working.

In fact, I'm going to power that on right now.

And there it goes, you can feel it already powering up.

Let's get this out of the way.

So, this is all your workstation, and we have a bunch of junk in here.

But I'm sure you'll come up with your essentials,

the stuff that you want to actually carry around with you.

So here we have our screen set up.

Here we have a little mini keyboard,

it just kind of depends on what you want to use.

Let me get these bungees out of the way.

So now, it's time to hook in the monitor and the DragonBoard 410c.

But as I've noticed setting this up, is that these two cables don't fit here.

Now, whatever you end up doing with your system,

you might actually have an inverter without plugs on it.

You might put your own plugs separately, mount them up on the board,

up here on the lid of your box or you might just have a power strip like this.

So, we just have a power strip and we're going to plug it into here.

All this does is just parallel all the voltages across the strip, and now we have

a way of providing enough plugs for all of our components.

So, I'm going to plug in the monitor first.

I'll just bring that right over here.

Eventually I'll drop it in there actually.

So, make sure it's on.

I just drop it in there.

Monitor's going to get powered up.

Put that right there.

This over here.

We need the HDMI, so we're going to want to hook in the HDMI to the DragonBoard.

Right here.

HDMI goes through into the DragonBoard.

And into the monitor.

Everything set up here.

Turn that on.

And finally, not going to use this little keyboard right here.

I'm going to use the actual size one.

It just depends on what size box you have, but I'm going to use this actual size one.

This right here, we'll pop this into the DragonBoard USB slot.

And finally, the DragonBoard plug,

which will go right here and plug in the DragonBoard.

So, we should get this to boot up here, I hope.

And yeah, it is actually booting up.

Now, essentially who wants to work on their DragonBoard out in the sun, right?

This isn't to go work on your DragonBoard out in the sun.

This is just to prove that you have a system that's capable of powering your

DragonBoard at night and then charge it during the day in the sun.

So, the DragonBoard is booted up here.

And I'm going to try to bring this over here so that the camera can see it.

But we have our fully functional DragonBoard right here.

And this is actually has the CV projects,

the computer vision projects we did in course five, the last course we just did.

So, as a fun little thing, I'm not going to go through the whole thing

because you guys at home have already done all of this.

But we have our camera right here.

We can plug the camera into the other USB slot here on our DragonBoard.

And we can move all of this inside, hooked on there.

We can move all of this inside of our box here.

And then, we can just prop this up over here, right.

Once the program's running on the DragonBoard we don't need

the screen anymore.

So we run our program, we have the camera taking pictures every 30 seconds.

And I'll set it up nicer when we get into the studio,

it's kind of tough to do it right here.

But once the DragonBoard's running you get your program running and

you can just have this snapping pictures, sending it to your computer or

your cell phone every three, ten seconds.

Connected to your cell phone network, wherever you want to have it hooked into.

So, yeah, this is a nice little glimpse of the system working again.

You could have a smaller monitor, hook it up, mount it up here,

provide yourself a little bit of shade.

But hopefully, this was a cool little demo for you and we will be providing

you with more detailed schematics and how to hook everything in properly.

However, I would suggest watching the videos carefully because it is pretty

self-explanatory.

The charge controller comes with their instructions,

inverter comes with their instructions.

And of course, the battery focus on part one of this

course to get our approach again, and

just kind of follow the steps carefully so you can have a nice system of your own.

I will see you in the next video.

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