Can anyone help me in setting up thermocouple with mkr wif 1010. I wan't to know how to connect thermocouple with mkr wifi 1010 board.
Can anyone help me in setting up thermocouple with mkr wif 1010. I wan't to know how to connect thermocouple with mkr wifi 1010 board.
Thermocouples need a front end - it's not simple to measure them, and the MKR ADC will not do.
Here are examples using Analog ICs: https://www.analog.com/en/resources/analog-dialogue/articles/measuring-temp-using-thermocouples.html
I have a Renesas RX23a here, a microcontroller that has the analogue circuitry on board for thermocouple exercises. Maybe use a controller like that?
Analog Devices has a temperature measurement development system with a board they call Linduino
https://www.analog.com/media/en/technical-documentation/product-selector-card/2983d.pdf
You may be able to interface their thermocouple board to a MKR WiFi 1010
The Maxim chip and Arduino circuit I used is shown in this video:
It was part of this project:
(+) Taming The Wild Stirling Engine - element14 Community
Thermocouple output is proportional to the different between the 2 ends of the thermocouple wire, so you need to know the temperature at the MCU end in order to calculate the temperature at the other end. I used a Max 31855 chip to simplify the job of signal conditioning and adding a reference temperature.
Arduino use the MAX31855 on their MKR THERM shield:
When I needed a thermocouple, I bought one of the boards off of Amazon. If the application doesn't require a thermocouple, you could also consider a thermistor. It might be cheaper to buy the thermistor than a thermocouple interface board. Then you just do the voltage divider thing and plot your temperature curve. When we did the Experimenting with Thermistors Challenge, I bought the "kit". I think it set me back $16 for all 10 thermistors AND a plastic box.
Here's another option
https://diyprojectslabs.com/humidity-temperature-sensor-with-arduino/