Creation of a tool with 6 high temperature sensors

[anthony84210]

Hello everyone, I'm new here and my name is Anthony, I'm French.

I work in the electronic repair of hairdressing products such as hair dryers, straighteners and others.

I need to create a tool for my workshop to facilitate the repair and I need your help.
I searched for a long time on Google and couldn't find a solution for my specific project.

For my project, I need to measure 6 different temperatures in real time and at the same time.
The temperatures vary from 145° to 285°, so my idea is to have a single screen with 6 temperatures and 6 thermistors.
If possible also recording the temperatures in a diary would be best.

Can you guide me to the material and the guides for the creation, I am comfortable in the electronic assembly but not at all in the development.

Thank you very much for your help.

[jremington]

This basic tutorial shows how to connect a thermistor to Arduino. Make an Arduino Temperature Sensor (Thermistor Tutorial)

However, many thermistors are not rated or useful for temperatures much above 100C. You should consider using thermocouples instead.

MAX31855 Thermocouple

[anthony84210]

Thank you, yes I have this tutorial at hand from the beginning, it is the same system that I would like but the difference is that I want to add 6 MAX31855 thermocouples and a display with the 6 simultaneous temperatures. Best regards

[jremington]

Start by getting one thermocouple plus MAX38155 interface working correctly, after carefully reading and following the tutorial.

Then add the others. If you run into problems, post again.

[Wawa]

Glass bead thermistors could be a cheaper option.
Leo..

[anthony84210]

Or exact, here are some photos from the test factory, we see the glass thermistors on every product in test.

[anthony84210]

Picture 2

[anthony84210]

Picture 3

[anthony84210]

Picture 4

[anthony84210]

Thanks, I can try that though, can I use Glass bead thermistors as they are smaller?
Thermocouple type K Ø 1/0.2mm

Should I choose a bigger screen to have 6 results afterwards if it works?
The Arduino module is able to have 6 different channels because I thought it only had 5? best regards

[Wawa]

If you go for a thermocouple, then this board could be interesting.
Many one-wire thermocouple boards can be connected to a single pin of a 3.3volt processor.
Displaying many temps on an lcd or oled screen shouldn't be a problem.
I would experiment with one or two boards first.
Leo..

[wildbill]

@anthony84210

The Arduino module is able to have 6 different channels because I thought it only had 5

An Uno has analog pins 0-5, so six altogether. I believe the Nano has at least one more than that and the Mega has sixteen. Note though that they all use one ADC so the inputs can't be read exactly simultaneously. For your purposes, I wouldn't expect that to matter.