{"title":"Thermocouple Amplifier with 1-Wire Breakout Board - MAX31850K","handle":"thermocouple-amplifier-with-1-wire-breakout-board-max31850k","url":"/products/thermocouple-amplifier-with-1-wire-breakout-board-max31850k","description":"The MAX31850K breakout board is a 1-Wire thermocouple amplifier with cold-junction compensation for K-type thermocouples. Unlike SPI-based amplifiers, the 1-Wire interface allows any number of thermocouple breakouts to share a single data line — ideal for multi-point temperature measurement.\n\nThe board includes the MAX31850K chip, a 3.3V regulator, and 10μF bypass capacitors, all assembled and tested. It supports both parasitic power (power on the data line) and local power via the Vin pin.\n\nKey Features\n\n\n1-Wire Interface – Multiple thermocouple amps on a single shared data line\n\nK-Type Thermocouple Only – Measures -270°C to +1370°C in 0.25°C increments\n\nInternal Temperature Reading – Built-in cold-junction compensation\n\nParasitic or Local Power – Flexible power configuration\n\n3.3V to 5V Supply – On-board 3.3V regulator (data line is 3V only)\n\nBreadboard Friendly – Included pin header for easy prototyping\n\n\nPackage Contents\n\n1× MAX31850K breakout board (assembled and tested)\n1× 2-pin terminal block (for thermocouple connection)\n1× 4.7K data line pull-up resistor\n1× Pin header\n\n\n\nImportant: This board works with K-type thermocouples only. It will not work with any other thermocouple type.\n\n\n\nNote: The data line operates at 3V only and does not include level shifting. A logic level converter is recommended when using with 5V microcontrollers. Terminal block colour may vary (blue or black).\n\n\nResources\n\nMAX31850 OneWire Library (GitHub)\nMAX31850 DallasTemp Library (GitHub)\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":8881,"title":"Default Title","sku":"AF-1727","price":30.03,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}