Arduino EGT Sensor | Max 31855 Thermocouple Board

Today I walk you through how to setup and use the Max 31855 with a K-Type thermocouple that could be used as an EGT probe in a vehicle. This super simple setup is cheap and effective. You could display these values to an LCD or OLED screen in a vehicle. This is part of the larger project that I am working on my truck.

Stay tuned for more videos!

Tyler,
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Code Start: /*

/***************************************************
This is an example for the Adafruit Thermocouple Sensor w/MAX31855K

Designed specifically to work with the Adafruit Thermocouple Sensor

These displays use SPI to communicate, 3 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!

Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/

#include "SPI.h"
#include "Adafruit_MAX31855.h"

// Default connection is using software SPI, but comment and uncomment one of
// the two examples below to switch between software SPI and hardware SPI:

// Example creating a thermocouple instance with software SPI on any three
// digital IO pins.
#define MAXDO 3
#define MAXCS 4
#define MAXCLK 5

// initialize the Thermocouple
Adafruit_MAX31855 thermocouple(MAXCLK, MAXCS, MAXDO);

// Example creating a thermocouple instance with hardware SPI
// on a given CS pin.
//#define MAXCS 10
//Adafruit_MAX31855 thermocouple(MAXCS);

void setup() {

while (!Serial) delay(1); // wait for Serial on Leonardo/Zero, etc

// wait for MAX chip to stabilize
delay(500);
}

void loop() {
// basic readout test, just print the current temp

if (isnan(c)) {
} else {
}

delay(1000);
}

*/ Code End

[Gfunkbus]

Looking forward to seeing your project development. I'm going to be doing similar to hopefully create a digital dash in my 70s VW bus.

[ThePoofdiggins]

Hey Tyler, I know it been awhile since these videos... I have been wanting to do this same thing on my 91 w350. Do you think this prodject would be possible with the raspberry pi?

[Matthewonyoutube]

I already have a stand-alone egt gauge in my truck. Do you think it’s possible to pick up the signal from the thermocouple without interference with the gauge ?

[cyberflaneur]

Have you put this in your vehicle? I just built a prototype EGT sensor to put into my jdm van. I am not sure how reliable the max31855 is going to be for this application.

[TheSchneidItworld]

wooow, that's gonna be useful, thanks!

[richard]

You done prototyping your board yet????

[lancereyesromero]

Can I plug and use multiple egt? 5 to be exact for an inline 5. One in each exhaust port.

[dedisetiawan]

Thanks for tutorial, it is very helpful, May I look the code for this? Thank you🤝

[MikeFreda]

Good job to figure that out. Going to make one for my diesel Landcruiser.

[ApolloTheDerg]

Duuude, what about also doing boost, trans temps, EGTS’s, and maybe temps for oil or coolant? Gauge pods are expensive and my 400k mile 7.3l is taking my money for other parts, but doing my own monitoring system would be dope, especially if I can do neat things with it

[DANEMSPRINGER]

Im looking at doing this for my 6.0 Powerstroke to display the data on Torque Pro using Seeed Studio CAN-Bus Shield V2 Compatible with Arduino for Controller and Transceiver, as well as fuel pressure.

Thank you for sharing this!!!

[sprtjnke]

Thanks for the tutorial. Just what I was looking for.

[skuuubasteve]

I made one and love it. Used RGB and some logic so its green under 800, yellow till 1000, and red yellow flash over 1000f.