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MAX6675 with K-Type Thermocouple and Control Relay as Thermostat

In this tutorial, we learn how to use a K-Type thermocouple with a MAX6675 module to use it as a heater control or cooler control by using a relay. With the provided code, the project can be set to work as a cooler or heater controller, and the temperature value can be set in any unit: C, F, or K.