Planimeters We Made with Arduino
hello ladies and gentlemen
i’m che junso i’ll talk about our steam
activity
the topic is a study on improvement and
particular
use of measurement devices using
green theory let’s start
i think you learned how to measure the
area of
triangle or square or any other
simple shapes but how about
this shape can you measure the area of
it
maybe you can but i think it’s going to
take a long time
so i’m going to introduce you about 20
meter
i think you didn’t heard about this
before
so i’ll introduce you about it
centimeter
is a tool to measure an area it can
measure
any shapes but it needs a huge accuracy
so it is really expensive you can see
here
so let’s say your wallpaper is ripped a
little bit
like this picture so you want to measure
the area of it
so you have to buy a 20 meter by almost
1 million dollars do you want to
i think you don’t want to so we
we decided to make it by arduino
arduino is very cheap computer chip
so we will make it cheaper and efficient
okay the main idea of the planet meter
is green theorem it makes
much easier to integral and calculate
the area
but let’s skip complicated things
because
i think you’re going to take an hour to
explain it so
okay we made
three planimeters and first one is
linear planimeter
we made a prototype you can see here
by lego and we
improved this material by metal
and first prototype had a big error but
improved model
had only five percent error
we wanted to compare this error with
graph paper
so we made an algorithm which calculates
area with graph paper
we used pick’s law to calculate the area
so we finally found out the error of
this is similar with
five millimeter times five millimeter
graph paper
and second one is hatchet planimeter
the name of it is hatchet plan emitter
because the
original version of it is made by
hatchet
so we decided to make it biofuel because
hatchet is a little bit dangerous so
okay we made
so as you can see here there are two
types
the first one is made by two laser
sensors
and second type is made by only one
gyro sensor we tried many lengths
and many times but always the error was
very big
so the error is because of
this red area as you can see in this
picture
red area always changes so it makes
theoretical error so we finally decided
to make
our own new plenty meter
and we succeed as you can see in this
picture
we challenged a new thing it is designed
to extend the length
so we measure the area twenty times
with this plane meter and the error was
the best
it was only three percent okay
now is the conclusion we made
three planet meters we made 3
centimeters by arduino
and linear planimeter and our new plan
emitter
was very successful so
we will commercialize these things in
the future maybe
and we can make these 20 meters by only
40 dollars so i think we can
earn some money maybe okay thank you for
listening my presentation