In this tutorial we learn how to use MAX6674 K-Type thermocoupler sensor with ESP8266 NodeMCU and D1 Mini to measure temperature over WiFi either on Desktop, Tablet and Mobile phone. The can can use Ajax which needs your router to be connected to WiFi and without Ajax which doesn't need WiFi.
The link to use in the "preferences" of Arduino IDE https://arduino.esp8266.com/stable/package_esp8266com_index.json
for this project you need to download :
- Library for MAX6675 as zip file
- Arduino Code as zip file