[Music]
okay so this is such an interesting
topic we’re trying to discuss today so
how to build a better word and it’s hard
to find an answer to this question but I
know this much in order to build things
you need to write towards and I want to
talk to you today about the most
powerful and mouse the most interesting
tool of the 21st century and I’m talking
of course about the computer but before
I begin let me get something off my
chest so I work as a teacher and my
subjects are German and Catholic faith
so no you may say okay this guy’s
probably the least qualified person to
talk about computers and maybe you’re
right and but I’m not here to tell you
about artificial intelligence or how the
internet works I just want to share with
you three things I learned about
computers so about four years ago I
started a coding Club in my school and
at about the same time some very
passionate people in the UK they
released a little computer called
Raspberry Pi maybe some of you know this
computer and well I was very excited
because it was a computer made
especially for schools and so I bought
one and I tried it at home and well I
hated at first because the Raspberry Pi
is unlike any other computer you can buy
because nothing works out of the box so
there is no operating system and no menu
way so when you connect it to a monitor
nothing happens if you don’t know how to
do it but I saw on the internet that you
could really cool stuff with this
computer and so I thought well let’s
give it a try and I bought ten of these
computers and it was the beginning of a
very interesting journey and so while I
was thinking about what you do in this
coding Club
I had one question in mind and this
question was what is it that everybody
should know about computers so
especially pupils and teachers and so
while I was thinking about that question
I went to my parents attic and there I
found this do you know what this is so
it’s called a kendama term and it was a
very common piece of technology up until
the 70s so for almost a hundred years
and it’s a mechanical calculator and let
me show you how it works so this is what
it looks like and when you press a
number on this keypad and the number is
displayed down there and then when you
press it now another number so for
example of four and then these two
numbers are added and you can see the
result down and the display and you can
even multiply or divide numbers and I
thought wow it’s cooler so it’s kind of
the first computer right and and it’s
very easy to understand how it works
it’s it’s complicated but if you open it
up there are little gears inside and
they turn when you press the key and so
it’s it’s not very hard to understand
how it works
okay so so why are there no little
moving gears in a modern computer right
so they what’s the question
I don’t know very much about computers
and the reason why is this little black
dot you can see over there so it’s a
transistor and some people say it’s the
most important invention of the past
hundred years and you can think of a
transistor as a little electronic switch
which can turn on and off very very fast
so several billion times a second and if
you if you have a smartphone like this
so a modern smartphone it consists of
over
so several billion transistors right so
we have this tool and it consists of
little electronic switches which you can
turn on and off very very fast and I
think this is the first thing everybody
should know about computers so the
computer can consists of little switches
which you can turn on and off very very
fast okay but what can you do with these
switches and this is where the Raspberry
Pi comes into play and this is what it
looks like so this is a Raspberry Pi
deluxe version so it costs about 35 Hiro
and it has Wireless LAN built inside and
Bluetooth and you can set it up very
easy you just put a micro SD card inside
it’s like a hard disk and then you
connect mouse and keyboard and an HDMI
cable for the monitor and a power cord
and then then it boots up so as I said
this is a kind of a deluxe version of
the Raspberry Pi so all the things
things I’m now going to show you are
running on this Raspberry Pi it’s called
a Raspberry Pi zero and it costs only
five euro all right so this is a fully
functional computer for only five euro
and the reason why it is so cheap is
because it is made by a charity so
there’s a charity in the UK the
Raspberry Pi foundation and they are
making this computer as I said
especially for stewards and well so let
me show you what you can do with this
machine so when you put the Raspberry Pi
it looks like any other computer right
you have a graphic interface and then
you have office software maybe you know
Libre Office is open source layer over
office software and there’s also image
manipulation programs and of course a
web browser and email client and so on
but the fun stuff about the Raspberry Pi
is that it is very easy to learn
programming and this is the second thing
I think everybody should know about
computers learn how to write simple code
and I did this in my coding club with a
special version of Minecraft
and if you have kids you know this game
right
maybe you if even if you don’t have kids
it’s one of the most popular computer
games of all time right and there’s a
special version available for the
Raspberry Pi so for free the the the guy
who made minecraft thought okay I want
to support this PI Foundation and I make
a special version of Minecraft for free
which runs which runs on the Raspberry
Pi ok and so one of the programming
languages we use is called Python and
it’s it’s a very professional
programming language which is used not
only in schools and it’s very easy to to
load it you just type in Python and this
terminal and it it is very easy to
understand programming languages so for
example if you want to add two numbers
you just type in 4 plus 5 and then you
have the result and if you want to set
up a variable you can just type a equals
4 and then you can calculate a plus 5
and then you have the result right and
now you can establish a connection
between this programming language and
minecraft and it’s also very easy you
just type in commands from MCP I import
minecraft and I have to set up another
variable so this just saves me some time
later on what typing and now I can I can
set a block in this word so simply by
typing MC dot set block and then I have
to type in the coordinates where the
player stands so right now I do this is
a new word I made so he’s standing at 0
0 0 so this XYZ coordinates and if I add
a few numbers to the y-coordinate then I
can set a block in this word so for
example a stone block and now I can
change the stone block to another kind
of block and
like this or I can make some some lava
flowing down and then I can put some
water above it and see what happens
and so this is a kind of programming
about it so the kids learn a lot by
doing this so they understand how to how
the coordinates work and so on
and then they are ready to do more
complicated stuff so for example they
build a house so I give them a pen and a
paper and they are drawing the house and
then they say okay so what do I have to
do what commands do I have to type in to
get this house so I put a block there
and there and then you get something
like this so this is a very little very
small program which consists of only ten
lines of code and it makes the diving
tower and puts you on top of the tower
and then you can jump down and so so
this is some some very easy programming
which you can do and there are also some
other coding languages running on the
Raspberry Pi like scratch maybe you know
if you are ever coated with kids so a
very common programming language was
made in the MIT or Sonic PI and so with
which you can program music so very cool
if you’re interested in music okay so
but the most interesting part about the
Raspberry Pi is a so called GPIO port so
it stands for general purpose input
output and these are these pins you can
see on the top of the Raspberry Pi and
to these pins you can connect almost any
electronic components so such as a
button or an LED or motors and so what I
just showed you is
the second most important thing learn
how to code and I think the third thing
everybody should know about computers is
how to build stuff with a computer and
so the first thing I let my pupils when
they want to learn how the GPIO port
works is a little game gaming controller
and now you say okay it sounds expensive
right to be the gaming controller but it
really isn’t because so this is what it
what it looks like and it’s I don’t know
if you reckon it’s a shell from from a
candy quarter surprise egg right so you
normally just throw it away it’s kind of
a garbage and there is a little button
and an LED and the resistor and a few
cable and then you can connect it to the
Raspberry Pi and use it to control a
video game or you can use it to to build
blocks and man codes or whatever you
want see what you can program it and you
can even make a deluxe version of it
which is what I’m using right now to
control this presentation so there’s a
little Bluetooth chip inside and little
USB port so you can charge it and then
you have your wireless controller which
you can use well for example for the
presentation and so this is another
thing we built it’s it’s a Game Boy and
so it was broken right somewhere I
didn’t say break your function at Game
Boy and so and inside the Game Boy is
also a Raspberry Pi also Raspberry Pi 0
4 5 hero and also a little little
display and the battery and then you
have a part of a computer or part of a
gaming consoles or whatever you want
right you can plug in mouse and keyboard
and the USB port and then you have can
do whatever you want with it
another thing is that we we took a toy
right so this is something you can you
can buy Lego Wally and we also played a
Raspberry Pi inside and added a few
motors and then you can make your own
robot and then you can control it in any
way you want so for example we we took a
Nintendo Wii Remote right so this is
from a gaming console and then you can
use it to to to move the robot around or
you could also connect it to the
Internet and then you can control it
with the keyboard or anything you want
right so these are some of the things
you can do with this very very cheap
computer right so five hero and but we
we just think it around with the
Raspberry Pi but let me show you what
what’s what a smart person can do with
the smartest person I found so this is
me Liam stetsom
and she’s 16 years old and she used a
Raspberry Pi and a little camera and you
can see you can see it there and it
scans through the eye and then when you
move the eye up the the wheelchair moves
forward and when the eye is turned to
the left in the wheelchair turns the
left and so on so it’s a great idea but
it’s not so hard to code this kind of
stuff with the Raspberry Pi and so let’s
get back to the main question so Steve
Jobs once said what a computer is to
mean is it’s the most remarkable tool
that we’ve ever come up with and it’s
the equivalent of a bicycle for our
minds so maybe you know this quote it’s
a very famous quote and I really do
believe this is true so this is really
the most powerful tool and I want pupils
to to use this tool to to build stuff
right
and so what we are doing right now is we
are creating a space I’m from Dusseldorf
and this called the coding Shoeless or a
coding school and this is a place for
pupils for teachers for parents where
they can learn these kind of things I
just showed you right how to how to use
the computer how to build stuff how to
learn how to program and well if we get
back to the main question so what is it
everybody should know about computers
it’s so learn how it works
right I have a basic understanding of
how our computer work learn how to write
simple code right for example with
Minecraft will scratch sonic PI program
music etc and learn how to build things
and I really want to encourage you so
there is a coding clap in almost any any
city or a makerspace and I want to
encourage you to go there and have a
look what the people are doing and if
there is no do as I did and to make your
own what you don’t really need to know a
lot of stuff so if you come together you
can you can learn a lot of stuff so one
person one set the Raspberry Pi is not a
computer it’s a community and I also to
believe this is true and if you if you
come together you can learn how to how
to create things and then you can can
become a producer instead of a consumer
of digital technology and I think this
makes the world a better place
thank you
[Applause]
okay so this is such an interesting
topic we’re trying to discuss today so
how to build a better word and it’s hard
to find an answer to this question but I
know this much in order to build things
you need to write towards and I want to
talk to you today about the most
powerful and mouse the most interesting
tool of the 21st century and I’m talking
of course about the computer but before
I begin let me get something off my
chest so I work as a teacher and my
subjects are German and Catholic faith
so no you may say okay this guy’s
probably the least qualified person to
talk about computers and maybe you’re
right and but I’m not here to tell you
about artificial intelligence or how the
internet works I just want to share with
you three things I learned about
computers so about four years ago I
started a coding Club in my school and
at about the same time some very
passionate people in the UK they
released a little computer called
Raspberry Pi maybe some of you know this
computer and well I was very excited
because it was a computer made
especially for schools and so I bought
one and I tried it at home and well I
hated at first because the Raspberry Pi
is unlike any other computer you can buy
because nothing works out of the box so
there is no operating system and no menu
way so when you connect it to a monitor
nothing happens if you don’t know how to
do it but I saw on the internet that you
could really cool stuff with this
computer and so I thought well let’s
give it a try and I bought ten of these
computers and it was the beginning of a
very interesting journey and so while I
was thinking about what you do in this
coding Club
I had one question in mind and this
question was what is it that everybody
should know about computers so
especially pupils and teachers and so
while I was thinking about that question
I went to my parents attic and there I
found this do you know what this is so
it’s called a kendama term and it was a
very common piece of technology up until
the 70s so for almost a hundred years
and it’s a mechanical calculator and let
me show you how it works so this is what
it looks like and when you press a
number on this keypad and the number is
displayed down there and then when you
press it now another number so for
example of four and then these two
numbers are added and you can see the
result down and the display and you can
even multiply or divide numbers and I
thought wow it’s cooler so it’s kind of
the first computer right and and it’s
very easy to understand how it works
it’s it’s complicated but if you open it
up there are little gears inside and
they turn when you press the key and so
it’s it’s not very hard to understand
how it works
okay so so why are there no little
moving gears in a modern computer right
so they what’s the question
I don’t know very much about computers
and the reason why is this little black
dot you can see over there so it’s a
transistor and some people say it’s the
most important invention of the past
hundred years and you can think of a
transistor as a little electronic switch
which can turn on and off very very fast
so several billion times a second and if
you if you have a smartphone like this
so a modern smartphone it consists of
over
so several billion transistors right so
we have this tool and it consists of
little electronic switches which you can
turn on and off very very fast and I
think this is the first thing everybody
should know about computers so the
computer can consists of little switches
which you can turn on and off very very
fast okay but what can you do with these
switches and this is where the Raspberry
Pi comes into play and this is what it
looks like so this is a Raspberry Pi
deluxe version so it costs about 35 Hiro
and it has Wireless LAN built inside and
Bluetooth and you can set it up very
easy you just put a micro SD card inside
it’s like a hard disk and then you
connect mouse and keyboard and an HDMI
cable for the monitor and a power cord
and then then it boots up so as I said
this is a kind of a deluxe version of
the Raspberry Pi so all the things
things I’m now going to show you are
running on this Raspberry Pi it’s called
a Raspberry Pi zero and it costs only
five euro all right so this is a fully
functional computer for only five euro
and the reason why it is so cheap is
because it is made by a charity so
there’s a charity in the UK the
Raspberry Pi foundation and they are
making this computer as I said
especially for stewards and well so let
me show you what you can do with this
machine so when you put the Raspberry Pi
it looks like any other computer right
you have a graphic interface and then
you have office software maybe you know
Libre Office is open source layer over
office software and there’s also image
manipulation programs and of course a
web browser and email client and so on
but the fun stuff about the Raspberry Pi
is that it is very easy to learn
programming and this is the second thing
I think everybody should know about
computers learn how to write simple code
and I did this in my coding club with a
special version of Minecraft
and if you have kids you know this game
right
maybe you if even if you don’t have kids
it’s one of the most popular computer
games of all time right and there’s a
special version available for the
Raspberry Pi so for free the the the guy
who made minecraft thought okay I want
to support this PI Foundation and I make
a special version of Minecraft for free
which runs which runs on the Raspberry
Pi ok and so one of the programming
languages we use is called Python and
it’s it’s a very professional
programming language which is used not
only in schools and it’s very easy to to
load it you just type in Python and this
terminal and it it is very easy to
understand programming languages so for
example if you want to add two numbers
you just type in 4 plus 5 and then you
have the result and if you want to set
up a variable you can just type a equals
4 and then you can calculate a plus 5
and then you have the result right and
now you can establish a connection
between this programming language and
minecraft and it’s also very easy you
just type in commands from MCP I import
minecraft and I have to set up another
variable so this just saves me some time
later on what typing and now I can I can
set a block in this word so simply by
typing MC dot set block and then I have
to type in the coordinates where the
player stands so right now I do this is
a new word I made so he’s standing at 0
0 0 so this XYZ coordinates and if I add
a few numbers to the y-coordinate then I
can set a block in this word so for
example a stone block and now I can
change the stone block to another kind
of block and
like this or I can make some some lava
flowing down and then I can put some
water above it and see what happens
and so this is a kind of programming
about it so the kids learn a lot by
doing this so they understand how to how
the coordinates work and so on
and then they are ready to do more
complicated stuff so for example they
build a house so I give them a pen and a
paper and they are drawing the house and
then they say okay so what do I have to
do what commands do I have to type in to
get this house so I put a block there
and there and then you get something
like this so this is a very little very
small program which consists of only ten
lines of code and it makes the diving
tower and puts you on top of the tower
and then you can jump down and so so
this is some some very easy programming
which you can do and there are also some
other coding languages running on the
Raspberry Pi like scratch maybe you know
if you are ever coated with kids so a
very common programming language was
made in the MIT or Sonic PI and so with
which you can program music so very cool
if you’re interested in music okay so
but the most interesting part about the
Raspberry Pi is a so called GPIO port so
it stands for general purpose input
output and these are these pins you can
see on the top of the Raspberry Pi and
to these pins you can connect almost any
electronic components so such as a
button or an LED or motors and so what I
just showed you is
the second most important thing learn
how to code and I think the third thing
everybody should know about computers is
how to build stuff with a computer and
so the first thing I let my pupils when
they want to learn how the GPIO port
works is a little game gaming controller
and now you say okay it sounds expensive
right to be the gaming controller but it
really isn’t because so this is what it
what it looks like and it’s I don’t know
if you reckon it’s a shell from from a
candy quarter surprise egg right so you
normally just throw it away it’s kind of
a garbage and there is a little button
and an LED and the resistor and a few
cable and then you can connect it to the
Raspberry Pi and use it to control a
video game or you can use it to to build
blocks and man codes or whatever you
want see what you can program it and you
can even make a deluxe version of it
which is what I’m using right now to
control this presentation so there’s a
little Bluetooth chip inside and little
USB port so you can charge it and then
you have your wireless controller which
you can use well for example for the
presentation and so this is another
thing we built it’s it’s a Game Boy and
so it was broken right somewhere I
didn’t say break your function at Game
Boy and so and inside the Game Boy is
also a Raspberry Pi also Raspberry Pi 0
4 5 hero and also a little little
display and the battery and then you
have a part of a computer or part of a
gaming consoles or whatever you want
right you can plug in mouse and keyboard
and the USB port and then you have can
do whatever you want with it
another thing is that we we took a toy
right so this is something you can you
can buy Lego Wally and we also played a
Raspberry Pi inside and added a few
motors and then you can make your own
robot and then you can control it in any
way you want so for example we we took a
Nintendo Wii Remote right so this is
from a gaming console and then you can
use it to to to move the robot around or
you could also connect it to the
Internet and then you can control it
with the keyboard or anything you want
right so these are some of the things
you can do with this very very cheap
computer right so five hero and but we
we just think it around with the
Raspberry Pi but let me show you what
what’s what a smart person can do with
the smartest person I found so this is
me Liam stetsom
and she’s 16 years old and she used a
Raspberry Pi and a little camera and you
can see you can see it there and it
scans through the eye and then when you
move the eye up the the wheelchair moves
forward and when the eye is turned to
the left in the wheelchair turns the
left and so on so it’s a great idea but
it’s not so hard to code this kind of
stuff with the Raspberry Pi and so let’s
get back to the main question so Steve
Jobs once said what a computer is to
mean is it’s the most remarkable tool
that we’ve ever come up with and it’s
the equivalent of a bicycle for our
minds so maybe you know this quote it’s
a very famous quote and I really do
believe this is true so this is really
the most powerful tool and I want pupils
to to use this tool to to build stuff
right
and so what we are doing right now is we
are creating a space I’m from Dusseldorf
and this called the coding Shoeless or a
coding school and this is a place for
pupils for teachers for parents where
they can learn these kind of things I
just showed you right how to how to use
the computer how to build stuff how to
learn how to program and well if we get
back to the main question so what is it
everybody should know about computers
it’s so learn how it works
right I have a basic understanding of
how our computer work learn how to write
simple code right for example with
Minecraft will scratch sonic PI program
music etc and learn how to build things
and I really want to encourage you so
there is a coding clap in almost any any
city or a makerspace and I want to
encourage you to go there and have a
look what the people are doing and if
there is no do as I did and to make your
own what you don’t really need to know a
lot of stuff so if you come together you
can you can learn a lot of stuff so one
person one set the Raspberry Pi is not a
computer it’s a community and I also to
believe this is true and if you if you
come together you can learn how to how
to create things and then you can can
become a producer instead of a consumer
of digital technology and I think this
makes the world a better place
thank you
[Applause]
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