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welcome everyone everybody can hear me
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all right I am so so happy to be here
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this is my third time that I'm here in
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the red ruby conference and the first
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time when I was here I was just a
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beginner trying to learn the ropes of
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web technologies the Ruby programming
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language and the rails framework but it
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has been a phenomenon and fun journey
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since then because of many of you in the
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audience the Ruby community of Singapore
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and beyond well it's people like Winston
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who has been so crucial about
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programming and teaching are people like
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juanito you know like spreading the love
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and laughter or even getting some free
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hardware like this in red dot ruby
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conference just last year it has been a
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fun journey but being a beginner is not
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just a story of an individual it is a
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story told repeatedly by generations of
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engineers experienced engineers whether
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it is the integrated circuits of the
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1960s or personal computing of the 1980s
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or even more recently the web and the
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Internet engineers have always taken on
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something new something unknown
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something messy have kind of played with
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it and made it so usable to the people
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beyond that it almost became an
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extension of who we are and so I thought
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I should start with a code the wheel is
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an extension of the foot the book is an
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extension of the I clothing is an
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extension of the skin electric circuitry
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is an extension of the central nervous
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system today I hope to share with you
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something that is an extension of our
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very own senses starting with the
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sensors themselves and some of it I have
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right here I want to be taking you down
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from the traction layers from the
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physical world the real world all the
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way to the application layer which all
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of us are familiar with and I want to
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share with you exactly what is changing
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in each of these layers so let's start
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with the sensors that pressure sensor
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as light sensors humidity sensors they
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are becoming cheaper and more compact
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than ever before which means it's just
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much more accessible to us the next
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layer is the wireless communication
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stack which the sensors will be using to
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transmit their values and all of us must
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have heard of NFC or even Wi-Fi
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Bluetooth and 4G which is kind of long
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range there are new protocols coming up
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such as Bluetooth Low Energy or even 5g
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that will be coming up in a few years
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and these are especially important for
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tiny sensors low power sensors for
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machine-to-machine communication the
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next layer is the access layer so all of
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us who are web developers here are very
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familiar with these protocols the HTTP
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the HTML JSON and so on i also want to
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share with you two more protocols in the
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application layer which is the MQTT and
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the coop and these are very important
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for machine-to-machine communication
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once again and of course about these we
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have the web of things layer which all
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of you as real developers or web
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developers will be playing with now for
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today's talk I'll be specifically
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focusing on the bottom three layers
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focusing on the layers that will be
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communicating with the physical layer
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the analog layer with the digital layer
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the application layer so before I get
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started I'm going to talk a little bit
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about what is an Internet of Things
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platform so sure and how many of you are
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rails developers wow that's about
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seventy percent of you I agree with you
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not all of our web developers so we
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might be playing with the Ruby a lot so
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as web developers as rails developers
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all these talking about this framework
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all things speak if you go to think
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speak calm you can actually connect your
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sensors and play with it so it is a
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hosted platform but if you want to look
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at the source code as developers you can
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also go to github and you can also
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download the source code so just a word
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of caution the source code in github is
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about a year
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old so it will be based on Ruby 2 point
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1 and the rails version is 4.2 but
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nevertheless I still feel that we will
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be able to catch on a lot of how the
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controllers are made the models are made
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and get a lot of ideas so essentially
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what is an IOT platform so it has four
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key features number one so you have a
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sensor out there in the wild and that
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kind of communicates periodically to
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your ruby on rails server so that's a
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key thing about what is an IOT platform
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the second thing is when does the sensor
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send these values it can be triggered by
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event which can be by a human and it can
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be by periodic like every few hours or
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so the third key thing is what do we do
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with the sensor data after it comes to
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your ruby on rails server typically we
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will plot charts and graphs so that's a
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very key function of this the last
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attribute is hooks and I think as real
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developers we are very good at this like
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when we get a post request or a get
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request we might trigger a rake task or
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we might generate a PDF or an email so
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these are the hooks and triggers I
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talked about so now that you know what
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is an IOT platform I want to be giving
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you a free demos in the course of this
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talk and hopefully with these three
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demos they are tangible enough for all
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of you to take back something home get
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excited and start playing with the
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physical world so at three demos here
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will be using Wi-Fi wireless protocol
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for this purpose I have three kinds of
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sensors or equipped actuators and being
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a red dot attendee I've used emojis as
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you can see the first one is a switch
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the second one is a proximity sensor and
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the third one is a temperature so let's
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get started with the first one it will
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be event triggered so before start with
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the first one I want to be talking a
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little bit about the wireless protocol
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system so we are in today's was very
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familiar with two kinds the Wi-Fi which
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is like within a room or the cellular
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which is like 2g or 3G so it's very
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important to know where is the device of
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the sensor
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and where is the kind of the central
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device that catches all these values in
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the case of Wi-Fi it is the router so I
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have a little router here so I've kind
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of flash the firmware and connected it
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to the SSID of this little guy and here
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is the router and this is the sensor so
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in terms of cellular it is the huge cell
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tower now what's happening in the last
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few years is this we are having more and
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more chips which is the connectivity
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chips available to us so this is an
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example of a photon which is a def kit
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and over here I have a Wi-Fi chip made
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by broadcom BCM and it's all done up for
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you in a tiny little PCB that you can
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explore I have another example this is
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based on the esp8266 it is a sub 3
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dollar USD trip Wi-Fi connectivity once
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again it's available as a dev kit same
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thing you see in the cellular device now
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the best part is the cost of course
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whenever an innovation becomes more
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prevalent is the cost in terms of Wi-Fi
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you can use these sort of a little deaf
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kids in sub 20 USD of course senses and
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all you have to pay a little bit more
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and in terms of the cellular
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connectivity it's about seventy or
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eighty dollars but just like our mobile
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phone you need a data plan and cellular
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is important you know because not all
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our sensors will be in the room it might
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be in the urban in the gardens or
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something like that so I hope that you
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gave a little bit of background about
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what kind of wireless connectivity we
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are talking about let me go on to the
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very first example so this is the first
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example i have here as i said i have a
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little switch here so if you see the
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switch here and this has stm32
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microcontroller the switch is connected
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to the microcontroller and that's where
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i flash to the sea program to kind of
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say how it will communicate and then of
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course it has a Wi-Fi chip on board
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which is talking to this little router
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here alright so that is the thing and
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with this Wi-Fi it kind of talks to my
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Ruby on Rails over which is running in
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my laptop alright so are we ready to see
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what it does
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okay so i'm going to go here and this is
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completely wireless so let's see i'm
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going to turn it on let's see
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of course alright so let's go on and
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I'll show you the channels this time
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it's going to the switch so this is
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where you will see the public switch
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here the public view so this is how let
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me see whether we got it no we didn't
00:09:38.380
get it oh well well even if you don't
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get it I'll come back here and then i'll
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show you the channel settings so what
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happens every time I turn this on and
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off it basically communicates with the
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rails server right here and when it
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communicates it gets a post request so
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let me show you the API keys right here
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so this is the API key you have here and
00:10:00.610
then the channel settings over here you
00:10:03.580
kind of set it up and then you say that
00:10:05.410
in this sensor node right here you have
00:10:07.990
eight different fields and one of them
00:10:10.690
is a switch so let's turn back here and
00:10:16.800
this is the API key now let me move on
00:10:20.260
and show you where this can be used this
00:10:23.410
little switch how many have heard of
00:10:25.870
Amazon dash many of you so this is
00:10:29.410
actually using the same broadcom Wi-Fi
00:10:32.290
chip as the Amazon dash here so what it
00:10:35.200
does every time you kind of switch or
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push the button it connects to your
00:10:39.040
router at home and it basically creates
00:10:41.380
a line item in the e-commerce cart of
00:10:45.339
your Amazon and the cool thing is the
00:10:48.010
few months ago amazon even release the
00:10:50.529
iot button and the iot button is
00:10:54.459
available as a developer kit to go ahead
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and play with it AWS iot button so
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that's a brief about this but i want to
00:11:01.930
go to the forum where and the real code
00:11:03.970
where the communication happens so i
00:11:05.829
basically kind of flash the phone back
00:11:08.380
right here and even though this is C
00:11:11.079
code I want you to notice three things
00:11:13.329
about this firstly we have / update
00:11:17.010
secondly we have the API key right here
00:11:19.990
and thirdly we have the field which is
00:11:22.690
the on and off of the field
00:11:25.840
of course it's communicating to the
00:11:27.820
whole thing which is my laptop here and
00:11:29.650
the port so with this the things let's
00:11:32.800
go onto the rails and this is something
00:11:34.150
I think all of you are familiar with so
00:11:36.160
what happens in rails with flash update
00:11:38.290
it goes to the routes are be and it is
00:11:41.530
kind of defined as channels model and
00:11:44.800
then the method is post data so when it
00:11:47.620
gets this data it creates a new feed so
00:11:52.330
feed is also a model and of course it's
00:11:54.610
checks the API key and then field one it
00:11:57.850
kind of creates one line off the feed so
00:12:01.390
that's the meat of it all so let me go
00:12:04.120
to the second example that is the
00:12:06.370
periodic part of it and this time it
00:12:09.400
will be not triggered by a human being
00:12:12.010
with switch but it will be triggered by
00:12:14.620
proximity or in terms of every interval
00:12:18.220
so let me go on to show you this little
00:12:20.770
thing so here I have a very similar case
00:12:24.370
so this is the ultrasonic sensor that
00:12:26.380
you see here and ultrasonic sensor
00:12:29.080
basically means that when you have a
00:12:32.200
line of sight obstacle it can measure a
00:12:34.780
distance and this is a little different
00:12:37.210
previously i powered it up with a power
00:12:39.460
bank but this time i'm powering it up
00:12:41.260
with a lipo battery so if you kind of
00:12:44.440
sleep and wake it up every few hours
00:12:46.720
this can last for let's say a month or
00:12:49.390
so so this is an example of a proximity
00:12:52.390
sensor but it will not be triggered by
00:12:54.280
me this time so let's see an example so
00:12:57.700
I'm going to go to the channels and
00:12:59.500
let's see proximity
00:13:01.959
let's go to the public view and let's
00:13:06.619
see what's going on here let me turn it
00:13:09.379
on let's see whether it works even if it
00:13:11.389
doesn't work well
00:13:17.139
oh well it doesn't work all right but i
00:13:20.559
will show you something let's see once
00:13:22.899
again whether it works or not no
00:13:29.970
alright so i'm going to show you right
00:13:32.830
here and this part i want to show you
00:13:36.010
the data so if you click here now things
00:13:39.490
speak will give you how it you can able
00:13:43.060
to kind of communicate with it so if you
00:13:45.160
want to do a post request you can do a
00:13:47.680
slash update here and this is where you
00:13:50.350
they will actually generate the URL for
00:13:52.450
to write in the phone where and
00:13:54.220
communicate with the rails and then this
00:13:57.010
is the feed json that you can see here
00:13:59.170
so i think it might work let's see why
00:14:02.050
is it minus I it is working so you see
00:14:06.610
here it's minus 1 let's wait a bit
00:14:16.279
and you see 1719 alright so a bit far
00:14:25.370
away
00:14:33.590
and there you see so if you come back to
00:14:37.010
the graph right here number one if you
00:14:40.760
go to the public view there you see the
00:14:42.320
plots are being charted with this little
00:14:44.540
guy all right wait a bit
00:14:50.810
ok
00:14:53.820
probably have to be very very near but
00:14:57.090
you see if I show you one of the queries
00:14:59.820
that it's kind of working with where is
00:15:03.900
it
00:15:08.840
right here so this is an example of a
00:15:11.720
post request that's been done with the
00:15:13.670
fields it's minus one it's very very
00:15:16.610
nearby so there you see it's giving
00:15:19.100
minus one so it kind of updated the
00:15:20.780
chart now in this example let's look at
00:15:23.750
the data here because the IOT platform
00:15:26.210
is all about data so what I'm going to
00:15:29.120
do is I'm going to export it to csv file
00:15:31.850
and as you can see minus one minus one
00:15:35.240
and then 19 and then minus one right
00:15:37.520
here so it's immediately available in
00:15:39.740
your CSV format and of course it's also
00:15:42.530
available as JSON right here so let me
00:15:47.000
go back and explain a little bit about
00:15:50.090
the rail structure so this week uses
00:15:52.880
things like device and whenever jam and
00:15:55.850
many of the gems that we are very very
00:15:57.410
familiar with but I'm going to be
00:15:59.090
talking about three models that are very
00:16:02.120
very specific for IOT platform one of
00:16:04.370
them is something called a channel so
00:16:05.840
channel is something like this is a
00:16:07.640
sensor node so it might have one or more
00:16:10.820
sensors so all these are related to one
00:16:13.250
channel the second thing is all about
00:16:15.830
the feed so whenever this sensor or more
00:16:19.670
sensors kind of transmit something it
00:16:22.070
will record in the database as one feed
00:16:24.950
item and lastly of course is the API key
00:16:28.750
so let me go and also say that API key
00:16:32.630
in the terms of things week is basically
00:16:35.150
a 16 digit alphanumeric number and
00:16:37.930
finally the feed controller and this is
00:16:40.490
where the data the meat of the matter is
00:16:42.260
the data here's this week which is I
00:16:44.930
think is really good is kind of for
00:16:47.480
exporting five different types of data
00:16:50.290
HTML of course it's for the view Jason
00:16:53.510
is very important if you want to be
00:16:55.010
using it and kind of hooking up with
00:16:56.780
api's with other types of applications
00:16:59.300
and of course there's CSV if we're going
00:17:01.370
to download and do some spreadsheet
00:17:03.140
manipulation and of course text so let
00:17:07.640
me talk a little bit about application
00:17:09.290
so yesterday if you remember God free
00:17:11.930
stock you spoke about smart can so it's
00:17:15.290
the same thing here so imagine what can
00:17:17.240
happen if you put a proximity sensor not
00:17:20.540
in a garbage can in a
00:17:22.220
room but let's say the huge garbage can
00:17:24.860
underneath the buildings and there are
00:17:27.289
many of them and public utilities
00:17:29.179
personnel comes and collects the garbage
00:17:31.159
and wouldn't it be better if each of
00:17:34.039
visas has a little bit proximity sensor
00:17:37.280
connected to a cellular communication
00:17:39.350
and it just gives the ping when the
00:17:41.659
distance becomes smaller than a
00:17:44.090
threshold and then it says that hey you
00:17:45.799
know the logic six people are the the
00:17:48.980
public utilities people go and go to
00:17:51.409
this area and these are the exact
00:17:53.770
containers garbage bags that needs to be
00:17:56.450
emptied so that's the application the
00:17:59.299
practical application of this so I have
00:18:03.620
based my example a lot of things week
00:18:06.500
now there are nine platforms I've played
00:18:09.710
with and I think you can also play with
00:18:11.510
it you do not need to install race or
00:18:14.210
anything these are all hosted platforms
00:18:16.220
and then nine of them and whether you
00:18:18.620
say IBM Microsoft AWS Google they each
00:18:22.820
have a IOT platform of their own and out
00:18:25.820
of these guess what two are made of Ruby
00:18:29.000
on Rails so you can imagine some of you
00:18:31.490
in this audience in a few years will be
00:18:33.559
part of an IOT platform building team
00:18:36.320
working with electrical engineers on the
00:18:38.539
other side and interfacing with the
00:18:40.100
sensors while you all will be working to
00:18:43.220
collect the data and make sense of it so
00:18:45.740
Adafruit IO is one of them and they also
00:18:48.409
are basing their platform out of Ruby on
00:18:50.750
Rails i also want to talk about
00:18:53.960
standards that are being done because
00:18:55.850
standards are so important because right
00:18:58.250
now i OT is a very very new technology
00:19:00.890
there are so many messy things going
00:19:02.840
around it's crucial that we also follow
00:19:04.940
standards and follow the conversation so
00:19:07.460
there's web of things standards by w3c I
00:19:10.159
love to subscribe to the mailing list
00:19:12.230
and kind of look at what they're doing
00:19:14.240
they will talk about API endpoints and
00:19:16.700
restful URL things that are we are very
00:19:19.400
familiar with it and also some new
00:19:21.440
terminology so go and subscribe to the
00:19:23.150
mailing list so this is the last example
00:19:26.270
i'll be giving and this time i'll be
00:19:29.150
using a temperature sensor and instead
00:19:31.820
of http i'll be using MQTT so how many
00:19:34.070
of them use
00:19:35.040
q TT so that's like the last layer of
00:19:37.830
the application stack of the internet
00:19:39.420
protocol any if you use MQTT that that's
00:19:42.060
awesome i see a few of you like about
00:19:43.590
five hands in the audience so before i
00:19:46.740
go on to the example i want to explain
00:19:48.270
why MQTT so like i said HTTP MQTT or
00:19:52.380
even ftp dns these lie on the top layer
00:19:55.170
of the application layer and MPG genco
00:19:58.170
app are becoming increasingly important
00:20:00.810
for machine-to-machine low power
00:20:03.330
communication and the exchange model is
00:20:07.590
a little bit different for MQTT it is
00:20:09.810
based on publish and subscription as
00:20:12.060
compared to http which is a request and
00:20:14.550
response and I think as web developers
00:20:15.750
we are very familiar with this so what
00:20:18.630
publishin subscription model does is
00:20:21.000
that you can do a many-to-many
00:20:22.610
propagation so you can imagine many
00:20:25.140
sensors connecting to a single MQTT
00:20:28.770
broker and that kind of publishers are
00:20:31.580
subscribes to other real service now
00:20:35.970
here's the interesting thing why is MQTT
00:20:38.160
and co-op especially suited for low
00:20:40.710
power sensors two reasons firstly look
00:20:43.800
at the header size HTTP has a huge
00:20:46.530
header size as compared to MQTT or co-op
00:20:49.530
and secondly HTTP is also based on ascii
00:20:52.560
or text whereas MQTT and co-op is based
00:20:55.470
on binary so that really really does a
00:20:57.780
huge effect on your battery so remember
00:21:00.420
i said if you're doing a prototype
00:21:01.950
you're having it at home sure you can
00:21:03.510
plug in the battery power and kind of
00:21:05.370
plug it back but if you're trying to do
00:21:07.020
something urban like in a waste
00:21:08.640
management system you have to ensure
00:21:10.410
that the battery probably last in the
00:21:12.480
order of years and that's where using
00:21:15.540
protocols that are made for low power
00:21:18.330
sensor systems machine-to-machine
00:21:19.950
communication is so important so let's
00:21:22.500
go into the last example shall we here i
00:21:25.170
will be using something different it's
00:21:26.670
not photon it's based on esp8266 and it
00:21:30.720
is the first sub three dollar USD chip
00:21:33.720
this is Wi-Fi chips I have a little
00:21:36.170
temperature sensor here what do you
00:21:38.760
think is the temperature right now when
00:21:40.350
I'm going to on it
00:21:41.440
any numbers 19 24 22 who is right who is
00:21:49.899
right let's see so I'm going to go here
00:21:55.779
and go to my channel and all right and
00:21:59.830
let's see so once again I'm doing it
00:22:02.529
every three seconds but in reality
00:22:04.029
probably want to be doing every three
00:22:06.129
hours so let's see I've on dit oh there
00:22:09.850
you go it's happening you know the stage
00:22:12.220
is a little warmer I think so there you
00:22:15.970
go it's good so it's about 24 Gusev 24
00:22:18.929
Winston thank you Miss I owe your drink
00:22:23.080
anyway thank you for what you did for
00:22:25.120
the community alright so that's 24 23
00:22:29.139
and and so one thing about data is that
00:22:32.980
you might want to have a huge dashboard
00:22:35.200
in your office and that's where
00:22:36.730
WebSockets come in also very handy so
00:22:38.889
once again II detail matters what you do
00:22:41.379
with the data so I'm going to talk a
00:22:44.799
little bit about MQTT so in terms of
00:22:46.539
MQTT like i said it is a publishing
00:22:49.419
subscription model so i'm running a most
00:22:51.639
creature server which is the MQTT broker
00:22:54.940
in my laptop here so once again i have
00:22:57.730
already a kind of flash the firmware in
00:23:01.000
my micro controller here and the form
00:23:03.610
where so here you will also see how the
00:23:05.710
MQTT protocol works api key / field
00:23:09.610
which is very similar and then of course
00:23:11.950
i'm going to my host which is my laptop
00:23:14.889
right here and I'm basically doing a
00:23:17.590
client publish and it's for course
00:23:20.440
talking to my router here and then my
00:23:23.919
real side will basically subscribe to
00:23:26.200
this MQTT sensor value and what it does
00:23:29.889
is it will also check exact value the
00:23:33.610
API key and the field and just like the
00:23:36.490
HTTP way we will create a new feed for
00:23:39.940
this every sensor value so application
00:23:43.539
i'm going to be talking about
00:23:44.259
application how many have seen your home
00:23:46.600
meters home power meter everybody has
00:23:48.429
one how many have seen it
00:23:50.250
alright that's about ten percent of you
00:23:52.590
this is how my home power meter looks
00:23:54.900
like and by the way I moved into a new
00:23:56.670
house and this is the latest i believe
00:23:58.980
how do you think meters are red pretty
00:24:03.120
manual nowadays I think we are trying to
00:24:05.100
do it automatically by think by a large
00:24:06.840
it's pretty manual and this is the you
00:24:09.360
see it's 2015 is by last year but
00:24:12.480
imagine one day we add a cellular
00:24:15.420
connectivity to this and every few hours
00:24:18.390
we just send this tiny little value from
00:24:21.990
your home power meter to your powers
00:24:24.390
utility and from there it just
00:24:25.770
propagates as data to all your accounts
00:24:28.710
or all your mobile phones imagine how
00:24:31.650
much aware we will be of the energy we
00:24:34.050
are using in every day of our lives I
00:24:36.120
think that has an impact directly on our
00:24:38.820
behavior and the planet we care for so
00:24:42.510
LT IOT platform at the end of the day
00:24:44.700
it's all about data sure we can go in
00:24:46.920
lot charts about it it will already give
00:24:49.710
a visibility of our usage of our
00:24:52.230
consumption but what are we gonna do
00:24:55.410
with the data is an even more important
00:24:57.690
question I'm going to stop something we
00:25:00.300
said something do a physical manual
00:25:03.060
deployment to the site notify social
00:25:06.210
media trigger a rake task generate a PDF
00:25:09.980
create an email trigger something or
00:25:13.560
change something about ourselves at the
00:25:16.980
end of the day I OT platforms have a
00:25:19.770
huge impact on every possible industry
00:25:22.440
around us whether it's logistics energy
00:25:24.960
transportation and so I thought I should
00:25:28.830
end with a code the wheel is an
00:25:32.190
extension of the foot the book is an
00:25:35.130
extension of the I clothing is an
00:25:37.980
extension of the skin electric circuitry
00:25:41.010
is an extension of the central nervous
00:25:43.020
system the extension of any one sense
00:25:46.850
displaces the other sense and alters the
00:25:50.190
way we think the way we see the world
00:25:52.530
and ourselves let's explore the senses
00:25:56.790
around us thank you so much
00:26:04.519
I did you have some questions yeah we
00:26:07.820
have some questions from the audience
00:26:08.749
please come on
00:26:14.610
are you doing this sort of work in on
00:26:17.780
professionally right now or just
00:26:19.500
currently so it's a hobby and that's a
00:26:22.200
great question you know like this graph
00:26:23.880
I showed right at the beginning you know
00:26:27.929
so I feel in terms of IOT we are kind of
00:26:31.500
like at an inflection point and if you
00:26:34.440
remember the era of web or web or
00:26:37.080
personal computing there were a lot of
00:26:38.400
hobbies that got started first and then
00:26:40.980
the industry kind of came together like
00:26:43.020
I said there are a lot of Industry
00:26:44.280
protocols being made but i'm personally
00:26:46.140
doing it as a hobby hope to make it a
00:26:47.669
career out of one day when you guys
00:26:49.799
ngness that's what we do first right
00:26:51.330
anything you just just go on and have
00:26:53.340
fun thanks for the great question any
00:26:55.140
other question
00:27:01.120
I think
00:27:03.360
oh ok why
00:27:06.060
hello hi okay uh I'm a beginner to
00:27:11.000
trying to hack my way to some stuff can
00:27:14.810
you suggest any starter kits too yes so
00:27:19.510
you see my slide link here at the end
00:27:24.370
right and I have three more slides here
00:27:27.500
I've linked to all the hardware links
00:27:30.080
here that's the most frequently asked
00:27:32.480
question so i would highly recommend you
00:27:35.030
to go to Adafruit or sparkfun like I
00:27:37.490
said they're deaf kids here and it will
00:27:38.960
be so easy to just get started just for
00:27:41.120
yourself yeah check out the links here
00:27:43.190
my slide link is also here I hope I if
00:27:46.190
not talk to me thank you yeah
00:27:53.410
any more questions
00:27:57.830
well I have one comment yes so South
00:28:00.830
show obvious a keynote speaker from
00:28:02.510
yesterday works as in power and I would
00:28:04.970
love to have him attach our power meters
00:28:08.929
to the cellular network so that we can
00:28:10.669
hack it you can we can tell him hahaha
00:28:14.950
okay so many you started it so we're
00:28:21.590
gonna bring me in the game right anyway
00:28:24.590
I just want to tell you that in the
00:28:26.570
single power we have already rolled out
00:28:28.279
like 100,000 smartest around the island
00:28:30.740
they are connected and it should be
00:28:33.470
rolling out to the rest of the island in
00:28:35.960
the next couple of years so it's gonna
00:28:41.120
come true no more manual thank you song
00:28:46.809
Thank you Thank You sanity thank you
