Multiple Max6675 Arduino, Industrial Temperature Monitor using K type thermocouple & Oled display

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Project Description:
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In today’s episode you will learn how to make an industrial temperature monitoring system using Arduino, i2c supported Oled display Module, and multiple Max6675 thermocouple temperature sensor amplifiers based on the K type thermocouples capable of measuring the temperature from 0 to 1024 centigrade. This is an industrial level temperature monitoring system and can be used in Plastic Injection Molding machines, Food industries and so on where you need to monitor multiple temperature sensors. In this tutorial, we will only cover the monitoring while in version 2 we will make a complete automatic system so that the heaters can be turned ON and turned OFF depending on the pre-defined values.

In this tutorial we will cover,

1. Max6675 Technical specifications
2. Oled Display Module Pinout
3. Complete circuit diagram Explanation
4. Arduino Programming and finally
5. Testing

Without any further delay let’s get started!!!


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ssd1306 128x64 Oled i2c display Module:

MAX6675 k type thermocouple and driver:

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Project Related Tags:
#max6675 #ktypethermocouple #temperaturemeasurement

[Tims_Projects]

You don't need to use that many pins on the Arduino.
Arduino has hard SPI on pins 11, 12 and 13. (using hard SPI is faster than the soft(x3) SPI you are using here)
Arduino pin D12 is MISO (Master In Slave Out), so ALL devices SO (Slave Out) can go to this pin.
Arduino pin D13 is SCK (clock), so ALL devices SCK can go to this pin.
The CS (Cable Select) from each device go to separate pins of your choice on the Arduino.
The Arduino then uses the CS pins to select which device it wants data from.
This way it leaves more pins to add more devices.
In this case you are not sending any data to the devices, so pin D11, MOSI (Master Out Slave In) is not used. (don't use this pin for CS)

[santiagolisboa]

Great Video! I'm working on a coffee roaster to measure Bean and Exhaust temperatures and your video will prove useful. Thanks!

[bagassetiawan]

It help me as beginner! I plan to make it as temperature display for my DIY NAS. So I can know the temperature without open the web.

[fitsumgetaneh]

wow an amazing video really love it the way you present is very attractive, clear and brief thanks bro very helpful keep it up!

[PhG]

Excellent video, well explained and in an entertaining way.

[extc_prachetsaul]

can you make a video on the data should received by the Arduino MEGA was then sent to a Nextion display which displayed all three temperature simultaneously and displayed accurate temperatures.

[leonnel]

Hi I'm looking for v2 for control ING temp. Very good explanation for monitoring. I could understand it as a beginner.
Thanks

[alessandrolazzari]

Thank you very much for your explanation! It was very clear and helpful! I am only left with one doubt I would really appreciate if you can solve it ... Max6675 module uses SPI, however, Arduino has got only one SPI if I am not mistakes... Therefore, how is it possible to connect the other two MAX6675 module? Thank you in advance

[piyushsharma]

Good video!!
Can you tell me that whether an arduino mega is capable of running MAX6675 ?
and how many maximum of max6675 modules can an arduino UNO support!

[zx]

Good video, although I personally found those MAX6675 a bit slow... =( Tried measuring temperature of water in industrial cooling system. But it was fun...)

[kellyspoolhall]

Good video but I was expecting the temperature display to rise much faster with a flame touching the thermocoupler. Is there a better alternative you could recommend?

[LvtLoshi]

This is excellent thank you, did you ever get around to using this to control a system of heaters/coolers?

[LuigiZotti]

Hello I have an electric oven that mounts a type K probe inside the chamber, then it must be connected to the controller (plc), do you think I can also connect the same probe to max6675?

[emilianocastelan]

can you connect 8 thermocouples along with 8 lcd screens for each one into the same arduino, and would I just copy the part where the thermocouples are defined 8 times ?

[abdurrafayqureshi]

How can I use MAX6675 with PLC ?
I was using Ada8495 earlier, but I lost it and now it's not available in my country, importing it will take 20 days and I have to make my project before 15th January, 2022.

[antoniocammarota]

Grazie, del bel progetto e di come lo spieghi anche sul sito. Sarei curioso di vedere anche un progetto su come controllare la temperatura, oltre a leggerla con la stessa attrezzatura . Saresti il primo su youtube. Grazie

[engr.omitdebnath]

Can you show the temperature monitoring and controlling system with K-type Thermocouple, STM32 Microcontroller, and Keil Uvision software by using Code? And can you please share that code with us? It will be very helpful for me and many researchers.

[intruderEvil]

I have 2 Max6675 Sensors. But the Temperature is different. Can i fix die Problem in the Arduino Code? The Differenz ist about 3 Degrees.

[chickenz]

Nice Video Sir!, btw hows the arduino Sir? is it still working ? Iam confused whether i should choose arduino or plc for controlling air temperature in farm and turn on the spray or other stuffs if it is too hot

[shishirimran]

adafruit_sh1106 and adafruit_sensor is not working i download both the library