hi welcome to another tutorial from Robo Jack's in this video I'm going to show you
how we can use this max 6 6 7 5 chip module with the k-type thermocouple to display the
temperature in Celsius and Fahrenheit on this LCD 1602 which has only four wires you can get
the cause for this by clicking at the link which is below the video in the description
which will take you to Robo Jack's calm slash learn slash Arduino let's get started with this
you want to display temperature either of degrees Celsius or degrees Fahrenheit and
this LCD which has only four wire from this max xx 7-5 module and then K type for that reason
I'm prepared this video because many people are asked for this I'm going to explain it for
this module and in the module we have two input that you connect this thermocouple sensor these
will have different specification usually 600 or maybe 800 or 1,200 degrees Celsius
so you will connect it in here and on this side we have five wires this is the ground
and this one is the five volts and then we have three other pens it says s oh this is
the serial out after that we have CS this is a chip select and after that this is C f ck
that's the serial clock so the tripping will be connected respectively to pin four five and six
this will be attached to wherever you want to get the temperature perhaps and and liquid or
in a tank or whatever it is so you will just insert it but this display we have four times
here using or do you know you know and then then SC LF a 5 and s das a 4 and Arduino mega
SD is 20 and then a CLS 21 and leonardo and all of those actually that chip and this is the max
xx 75 it can measure up to 1024 degrees Celsius and in here I've corrected from the last one is
connected to food the next one is connected to 5 and the last one in here is connected to 6
let me explain the code that says this is the max sex sex 75.8 include means include
this file as part of this program and this is part of the library we shall give you the
link as and then you can download the file as web file and then either put it directly
in under the library folder inside arduino or the second way will be click on sketch sketch
and arduino library and then add zip library once this opened pointed to the zip file for
example this is a zip file just select and then click open and it will be done
once you include it go to file and then examples and then you will see max six six seven five
library and they have example I have modified that that example here so I will provide you
this code you can just run it but those examples will see also be available this wire is part of
the library that is included you don't have to worry about it yeah and then after that I will
also provide you the link for this request crystal display for the LCD the same way as the other one
just included whether library otherwise it will not work for that reason I have another video
that explains this one how it works I will suggest I will provide you the length you have to go and
run that you have to download that code and run it and make sure that at least you display some
kind of text on the screen before coming to this because this is combination of temperature and
so you have to make sure that this device works before connecting the thermometer or the k-type
thermocouple sensor so this is this will be part of the library that you download and then this
line creates an instance of this class we call it LCD and it has three arguments the first one
is the address this is 16 character and to line the address of your module might be different
for that reason I will give you a an I squared C scanner and that one also has a I will provide
you the link so you can get it here I'm running it I've just tested it before I'm running it as
called I see I score C scanner let me upload it Kudus upload that you will see the address here
it says 0x3 of death zero X means hexadecimal and 3f is the hexadecimal value so it just runs and
continuously every few seconds will give you the address so once you find this address just put it
here so this is the address for my module and your module will be different and then we have this
trip in serial out pen and for chip select pen 5 and then serial clock pen pen sex I've written it
here after that we use this class and we create an instance of that class and we pass these three
parameters here so this this will be argument for this object and that will take care of this inside
the setup we first initialize the LCD by the LCD dot begin and then LCD dot backlight which enables
a backlight on after that we justify reboot this you will see this text now I'm rebooting or do
you know that by pressing the reset button and you will see that this Texas Robo Jack's max x67
5 thermocouple this is the text after that I used the serial monitor initializing the serial monitor
serial monitor is this monitor here that displays some information continuously whatever you see
here it will be displayed as well there and that 9600 baud is the value that is here it must match
9600 otherwise you will not be able to read the data and this is also the text at the beginning
we give three three second for the users to read this in case if you have something special
to display after that inside the loop death is serial print it will print the temperature on
the serial monitor which is just monitor this is just printing failures and then Fahrenheit
how it does is that we say tell me couple the one that we have created the instance in here
we just called thermocouple dot read Celsius will give you since yes so this is the value
for the Celsius value that you read here and this is the thermocouple dot read Fahrenheit
that's a Fahrenheit value this was for the serial monitor now we say LCD clear because
this is loop it goes every time and then clears a previous value you need to have this and this
one prints this first line here for us and it says set cursor at 0 0 that means character 0
of line 0 this is line 0 and that is line 1 so at line 0 we say put temperature that is this text
some pressure and after that we go to LCD set cursor a character 0 line 1 that is character
0 of line 1 and then we print the Celsius which is this value 21 now as you can see it and then
we say go to character 5 so 0 1 2 3 4 5 at 5 we say print this car 22 2 to 3 it will print that
Celsius after that we say go to sex the next one and Prentiss sex USC so this is just for
Celsius and this is for Fahrenheit so we go to character 7 and we create empty space we
just say printers empty space and then we say go to character 8 which is starting from here and
then we print thermocouple dot file read we'll fill in the Fahrenheit after that that we have
counted from here that will be six characters we 14 again we print the degree and after that
character 15 with apron F so it will print F and then we give the loop 1000 millisecond or
one second and it will repeat that's why you will see it changes every second if there is a change
we can see that the temperature is shown here exact same thing that you see here
it will be here on the monitor this is the K type cup thermocouple and I have
this Mastercraft from Canadian Tire and I'm just blowing heat into this
so you just read the temperature here
as you can see that now the celsius it's slowly jumping. of course in your application
you will not need to have both of this but in case if you have if you want Fahrenheit
and Celsius you can do it otherwise you can just use one of them and that would
be enough because as you can see there was two decimal places and because I put this here that
that are shifted here one decimal place has disappeared because I did not have enough room
but for you you just move this decimal place one more or two or more spots on this side
this degree sign with the Celsius or degree sign with a fahrenheit whichever you prefer
very hot
thank you for watching this was how to use this MAX76675 thermocouple sensor with
k-type to display the temperature on this LCD if you liked this video please thumb up 👍
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