MAX6675 K-thermocouple to digital converter ########################################### Overview ******** This is a sample application to read an external MAX6675 cold-junction-compensated K-thermocouple to digital converter. Requirements ************ - MAX6675 wired to your board SPI bus - K-thermocouple connected to MAX6675 T+/T- inputs References ********** - MAX6675: https://datasheets.maximintegrated.com/en/ds/MAX6675.pdf Building and Running ******************** This sample can be built with any board that supports SPI. A sample overlay is provided for the NUCLEO-F030R8 board. .. zephyr-app-commands:: :zephyr-app: samples/sensor/max6675 :board: nucleo_f030r8 :goals: build :compact: Sample Output ============= The application will read and print sensor temperature every second. Note that temperature fetch will fail if the K-thermocouple is not connected. This is because MAX6675 is able to detect if the K-thermocouple is connected or not. .. code-block:: console Temperature: 25.25 C Temperature: 25.50 C