The MAX6675 Module with a K-Type Thermocouple is a digital temperature sensor kit capable of measuring extreme high-temperature ranges from 0C to 1024C. The module utilizes the Maxim MAX6675 IC, which amplifies the tiny voltage produced by the thermocouple, performs cold-junction compensation, and converts the analog readings into a clean 12-bit digital signal.Technical Specifications

• Temperature Range: 0C to +1024C (Note: The standard probe bundled with hobby kits is often limited to 400C600C; a high-temperature probe is needed to reach the full 1024C limit).
• Resolution: 12-bit digital output, resolving increments of 0.25C.
• Accuracy: Approximately 2C.
• Operating Voltage: 3.0V to 5.5V DC (Highly compatible with 3.3V and 5V microcontrollers).
• Operating Current: ~50mA.
• Communication Interface: Read-only, SPI-compatible 3-wire serial interface.

Module Pinout ConfigurationThe module features two sets of connections: a 2-terminal block for the sensor probe and a 5-pin header for the microcontroller.Thermocouple Terminal Connections

• + (Positive): Connects to the red lead of the K-type thermocouple.
• – (Negative): Connects to the blue/black lead of the K-type thermocouple.
  (If your sensor reports decreasing temperatures when exposed to heat, simply swap these two wires).

Microcontroller Header Pins

• GND: Ground connection.
• VCC: Power supply (3.0V – 5.5V).
• SCK / CLK: Serial Clock input pin.
• CS: Chip Select input pin.
• SO / DO: Serial Data Output pin (MISO).