Type K Thermocouple to USB interface

Help & Support Robot Parts
1

Hi,

I am attempting to adapt a stovetop coffee roaster with with the ability to log and track my heating curves and rate of rise more accurately. I have been using a Type K thermocouple probe which has a simple reader it attaches to so I can see the tempurature as I roast. What I would like to do is be able to connect this thermocoulple to my computer somehow and track my roasts more accurately.

What sort of interface would work best for this simple project?
Single 2 prong Thermocouple in >>> USB out to computer

To Illustrate further:

Imagine a WhirlyPop Popcorn maker with a hole in the top lid for the temperature probe. Probe would be connected to an interface of some kind. Interface has a USB out port to computer.

2

Hi,

You can use a Thermocouple Amplifier Board like the Cytron Thermocouple Amplifier MAX6675 or the Adafruit Thermocouple Amplifier interfaced with an Arduino UNO Microcontroller Board.
You can find a wiring example and an Arduino sample code through this link

Regards

3

Thanks for the reply, I have the thermocouple already. I’ve never used arduino before, does it require programing for this specific purpose?
And what would be the difference between the arduino UNO and phidget 1048 in your experience?

4

The thermocouple you have will need to be connected to an amplifier board (in case you don’t already have one) that will output a digital or amplified analog signal to the Arduino board.
An Arduino board is a microcontroller board that will need a program for this specific application. Since Arduino is very popular, you should be able to easily find example codes and wiring that show you how to do it.
You can also use the PhidgetTemperatureSensor 4-Input USB Thermocouple Interface to interface your K-Type thermocouple with a computer, however, there is no straight-forward way to data log the temperature readings without coding.

5

Have you tried some Thermocouples from Marathon? Ive talked with them before on projects and they are helpful. Also make custom solutions.

backermarathon.com/products/thermocouples/