Arduino MAX31855 Thermocouple Tutorial | SPI

Mish Mash Labs demonstrate the MAX31855 Thermocouple Amplifier Breakout Board during this tutorial.

We show an Arduino Nano been connected to the MAX31855 Thermocouple Amplifier Breakout Board using SPI.

This tutorial demonstrates how to solder, wire and program the Arduino Nano, and can be used to connect any Arduino to the MAX31855.
We used a K-Type Thermocouple.

Code on GIT:

#arduino #thermocouple #tutorial #mishmash

Music Credits:

[muhammadhaseebtahir_]

I want the code!! Can you plz share the link for this?

[robertcoyle]

Had nothing but trouble with these modules. I'm trying to control a kiln. Everything fine until the temp gets to around 1400 F then signal gets wacky or loses contact with the software. Anyone else have this trouble. this doesn't happen with the Analog Devices chip. ?

[mathewroberts]

You shouldn't be using crimped connectors on the leads of a thermocouple as this introduces another junction which in turn incurs, usually a 1 degree error. Another thing to consider is the terminal block. Professional instrumentation use non ferrous terminals. However, if you know the errors you can offset them in software.

[xkeecrp]

This is an excellent video with thorough description and clear photo/videography!

[chandra]

Nice video! however I have an issue while uploading the code. It said that "Error compiling for board NodeMCU 1.0 (ESO-12E Module)"

the massage showed
fatal error: Adafruit_SPIDevice.h: No such file or directory

#include <Adafruit_SPIDevice.h>

^

compilation terminated.

I hope you can help me to solve the problem, thankyou.

[PeskyNgon]

hi there. im following this tutorial but im having a problem and hoped you might have some suggestions.
im just using the example sketch and havnt made any changes to it. with a K type thermocouple.
when i read the thermocouples temperature, it gets lower when i put it against a hot object, and vice versa.
its ambient reading is 15C lower than the arduinos, and if i press the probe into my cheek, the temperature goes as low as -23C.
apparently this can be caused by incorrect polarity on the thermocouple leads, so i tried swapping them, but it had no effect. the temperature still dropped instead of rose.

do you have any idea what might be causing this? id be grateful for your help.

[narayananeshwaran]

Could you share your code ?
I want to use this for a arduino based protype for dc moter!!
let me know if this code helps?

[tordtengstrand]

Thank you for your description! It is very good. I have tried to use your description, but the temp are far from correct. I have a probe I can check with an meter that it is OK . I guess the amplifier max31855 is sensitive, so I bought another one but the result is still very random from houndred degrees C to thousand. even negative., The probe I use has a yellow contact. something is wrong but I cannot figure out what. Any idea? I have read on arduino forum on similar problems