Use MAX6675 with Arduino MEGA to measure water temperature

[Linksprite-Yuki]

The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI™-compatible, read-only format.
This post we will demo how to use the  MEGA+MAX6675 to measure water temperature.

• Part list
  
• Diagram Wiring
  
• Test Code
  
• Test Result
  

Room temperature and the hot temperature, as the follows:

The

 

[hesamavr1]

How stable are the temperature readings?