Multiple thermocouples WIFI data logging with arduino

Hello Folks,

I'm pretty new to this platform.

I want to build a data logging device with multiple thermocouples using an Arduino Uno. I also want to send my data to the internet using a WIFI module.

I've identified the following hardwares:

  • Adafruit max31850k thermocouple amplifier
  • Arduino Uno
  • esp8266
  • type k thermocouples
  • level shifter

I would like to know if this project is possible. If so, how complicated is this?

So far, i have managed to complete a more simple project using the arduino Uno, an LM35 temperature sensor and the ESP8266 to send temperature data to Thinkspeak.com

That's about my level so far.

Thanks for you help.

Regards,

Alain

That seems feasible. How many thermocouples? (The Arduino Uno has 6 analog inputs, so 6 or less analog measurements are "easy".)

I've never used a Wi-Fi shield so I won't comment on that... and you have it working already.

an LM35 temperature sensor and the...

So, why the thermocouples? If an LM34/35 will work in your application it's a lot cheaper & easier. And in the "real world", probably more stable & reliable because you don't have to worry about a finicky high-gain amplifier.

You might find the Uno is redundant.

Thank you for your replies.

I want to have 4 thermocouples, which are digital

The LM35 is no use for my application since i want to measure a fluid temperature.

How is the Arduino Uno redundant?

You intend to use the ESP8266 for comms. This has some intelligence and can be programmed like an Arduino. There is discussion on this forum about ESP8266 and DS18B20 as stand alone devices.

The DS18B20 is available in a waterproof package, But it might make more sense to use them in thermowells anyway.

funkya2a:
. . .

I want to have 4 thermocouples, which are digital
. . .

Can you post a link to the thermocouple.
This seems to be quite a popular activity at the moment: Acquisition of temperature values - Project Guidance - Arduino Forum

Edit.
A type K thermocouple has a temperature range -200 to +1250. That is from almost absolute zero to the melting point of gold. Can you add some more detail about your project ?