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  • I'm Constanza.

  • I'm from Buenos Aries, Argentina.

  • And I'm a frontend developer at an E Commerce country from South America.

  • I'm part of Chica its program, we are women and we host meetups and create a platform

  • for displaying with women and nonbinary Devs to give them more visibility.

  • But now I'm here to talk about life, robots, and cats!

  • Three of the most popular things on the Internet, right?

  • We're going to see in this presentation with life and designing and it's main part.

  • Building the building process and potential use cases of home automation.

  • So, when I was a 4yearold child my family made me clean up my bedroom, put the toys

  • away in boxes and do the dishes.

  • And sometimes sweep the patio.

  • By then I was so angry because all I wanted to do was to play with my friends and toys.

  • Right?

  • So, I

  • used to have this dream that was about creating robots that could help me with these chores

  • I had.

  • But then I grew up.

  • And I still have chores even more than before.

  • And now I have two cats.

  • Orson and Heckl.

  • And sometimes they had to be they had to wait for me to be fed.

  • Needless to say, I rarely get home early.

  • If I give them the day serving in the morning, they ate it by noon and when I get home at

  • night, they're hungry.

  • So, I needed to figure out a way to give them their serving twice a day.

  • Right?

  • Okay?

  • And so, now I know that's why I decided to build this.

  • I know nowadays there are a lot of options that fill our needs.

  • But some are expensive, and I can't afford them.

  • That's the reason why I built the pet feeder.

  • So, then I started Googling similar projects that could guide me in the development.

  • I saw a lot of the examples.

  • Most of them were built, and the structure was just for one cup.

  • However, what I needed was something that could feed both cats at the same time.

  • Because I don't have much space in my home and because it's cheaper than having two machines,

  • right?

  • So, I knew that I will need a dispenser as a container.

  • Several motors to move the container legs.

  • And a microcontroller to run program.

  • But I didn't know which one.

  • Because there are a lot of it in the market.

  • So, I had to decide if I will use a Raspberry Pi or an Arduino or something else.

  • For some reason I thought that a Raspberry Pi would be the best option due to how easy

  • to work is its operating system.

  • So, someone lent me a Raspberry Pi which I had to configure it from scratch as well.

  • And I decided to use JavaScript develop the feeder because I'm learning to program with

  • this language.

  • So, I made research and found a platform called Johnny 5 that allows you to work in robotic

  • systems with JavaScript.

  • But before using Johnny 5, I installed RasPiO which is a plugin that allows you to use Johnny

  • 5 in the Raspberry Pi.

  • I used packages for run for all of this stuff.

  • I used NodeJS.

  • So, the configure of RasPiO and Johnny 5 is pretty easy.

  • You just have to start it and acquire the module in your JS file.

  • I'd never built something like that and my knowledge on the subject was new.

  • All I know from movies that there are conventions for connecting the wires.

  • So, all I wanted to do was not to burn my house because it would be terrible.

  • So, after the setup of the Raspberry Pi, the first thing I tried was to turn on tiny lights.

  • And to my surprise, it worked.

  • So thank you.

  • [ Applause ] So, I got into the world of several motors

  • and I tried to make one work.

  • But that part wasn't that easy.

  • As I was suspecting.

  • So, the Raspberry Pi has a lot of pins to put the wires.

  • But you can't use any.

  • I connected wires to different pins on the server motor.

  • It didn't work until I found out that there are some things that need to be connected

  • to a specific pin.

  • For example, controlling the server module place.

  • So, to do that you need to connect to a PWN which is a pulse with modulation pin.

  • And the Raspberry Pi has just four of them.

  • So, I connected to a wire.

  • GPO18.

  • And the other wires must be connected to a 5volt pin and a ground pin.

  • So, during the process I learned that not all server modules are the same.

  • Some of them turn 45 degrees.

  • Others, 180 degrees.

  • And there's some with continuous rotation.

  • I used all of them until I found the one I needed.

  • Okay.

  • You know that you must consider the weight of what you want to move.

  • So, I had to try several modules for different weights.

  • My house was full of servers.

  • But I chose the one that can receive 3.2 kilos.

  • So, I'm sorry.

  • [ Laughter ] Yes, that was a problem.

  • Because I can't stop I can't make it stop the server modules.

  • And so, the food overflowed a lot of times all over the table.

  • That drove my cats crazy.

  • So, in fact, they heard the sound of the food getting out of the feeder and came running

  • to me and started meowing and at first it was very funny.

  • Okay.

  • But it turns out that to move a server motor with continuous rotation, you need to move

  • the blade clockwise.

  • So, it’s necessary to set the top speed of the server blades when you want to stop.

  • So, I set the feeder to give them the food twice a day.

  • For that I used an npm package.

  • You just have to set the minutes.

  • Every 15 minutes.

  • And then the hours.

  • That's it.

  • They eat at 8:15 and 9:15 p.m.

  • So, thanks to that, I left the pet feeder running.

  • And thanks to that, I realized that the feeder wasn't working properly because it was letting

  • out the food every hour.

  • So, they were crazy.

  • Yes.

  • They wanted to eat all the food they can see.

  • I'm sorry.

  • So, for I spent a lot of time trying to figure out what was the problem.

  • And I found out that the library, the package wasn't working properly.

  • So, I replaced that package for another one.

  • And everything was all right.

  • So, the feeder was almost done.

  • But one day my cats got up really, really early.

  • Like 5 a.m.

  • And they started mewing loudly.

  • I was a little bit sleepy.

  • And tried to get up and fill their bowls.

  • But I knew that if I didn't get up, they would keep crying.

  • And so, that was the point where I thought that I should include a new feature.

  • Send an email from the comfort of my bed and go back to sleep.

  • So, I started looking for other packages.

  • And by the time I felt like this little cat sticking its nose in every package, his tongue.

  • Until I got the right one for this project.

  • So, to then develop this new feature, I found this package that allows you to set up the

  • configuration.

  • It was very easy to include this package in my project.

  • And in this case, I wanted the feeder to start working only if I was the immediate sender.

  • So, this was the feeder before it became a robot.

  • And after a lot of time developing and testing yeah.

  • The feeder is called Sascha.

  • I finished it with this final structure.

  • That's awesome.

  • With the help of my friend because there are a lot of things that I can't do.

  • So, we included those.

  • Before that it was just one tube.

  • I want to say this separation of those two is made by was made by that.

  • So, I can say that the dream that I had when I was a child came true.

  • [ Applause ] So, I'm building Sascha and getting all these

  • made me know I wanted to do more projects involving robotics.

  • That there are a lot of potential use cases of home automation that I would love to implement

  • like controlling nonsmart things like lights or the airconditioner.

  • Or controlling the temperature of the room.

  • So, I think that it's you can build this feeder just with a little JavaScript knowledge.

  • It's not too complicated.

  • And it's a nice activity to teach you how to code.

  • Even if there are parts that involve not coding like building the structure and gluing pieces,

  • et cetera, why is it a nice activity to code?

  • You can teach conditionals and setting up packages and the microcontroller so you can

  • introducing beginners to the art of setting up their computers.

  • I don't know much JavaScript because I started learning to program like two years ago.

  • But I'm sure that there are amazing projects to be built and to be shown.

  • Maybe those projects can inspire others other people to the things to facilitate chores

  • or change how they interact with their home just with a little bit of code.

  • So, that's all I have.

  • [ Applause ]

I'm Constanza.

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生命とロボットと猫について! by Constanza Yáñez Calderón|JSConf EU 2019 (About life, robots and cats! by Constanza Yáñez Calderón | JSConf EU 2019)

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    林宜悉 に公開 2021 年 01 月 14 日
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