The MAX6675 is a thermocouple-to-digital converter module designed for K-type thermocouples. It reads the thermocouple signal and provides temperature data to a microcontroller over a simple SPI-compatible interface.
| Pin | Signal | Description |
|---|---|---|
T+ |
analog | Positive K-type thermocouple input lead to the MAX6675 converter. |
T- |
analog | Negative K-type thermocouple input lead to the MAX6675 converter. |
SO |
MISO | SPI serial data output from MAX6675 to the microcontroller MISO input. |
CS |
chip-select | SPI chip-select input; drive low to read temperature data. |
SCK |
SCK | SPI clock input from the microcontroller for shifting out temperature data. |
VCC |
power | Module power supply input, typically 3.3V to 5V depending on board variant. |
GND |
ground | Ground reference for power and SPI signals. |
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