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Thermocouple Intrfacng with Raspberry Pi | JAVA

Reading thermocouple data on RAspberry Pi using JAVA and Pi4J with the help of MAX31855 14 bit thermocouple to digital converter.

bikash-narayan-pandaBikash Narayan Panda
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raspberry pi pi4j java on Pi pi4j usage max31855 max31855 with raspberry pi SPi raspberry pi spi on pi

This project was created on 12/20/2016 and last updated 6 years ago.

Description

Reading thermocouple data on RAspberry Pi using JAVA and Pi4J with the help of MAX31855 14 bit thermocouple to digital converter. The MAX31855 performs cold-junction compensation and digitizes the signal from a K-, J-, N-, T-, S-, R-, or E-type thermocouple. The data is output in a signed 14-bit, SPI-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1800°C and as low as -270°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from -200°C to +700°C for K-type thermocouples.

Details

Components

  • 1 × MAX31855 Semiconductors and Integrated Circuits / Misc. Semiconductors and Integrated Circuits
  • 1 × Raspberry Pi
  • 1 × K Type Thermocouple
  • 1 × SD Card with Raspbian OS for Pi

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Bikash Narayan Panda wrote 12/23/2016 at 13:13 • point

Gabriel.... Can you send me the formula to normalize the readings... I  hope that uses the internal temperature.....I can use that to update to the viewers on my youtube channel for more accurate readings..... By the way thanks for your response ....

  Are you sure? yes | no

Gabriel wrote 12/23/2016 at 12:19 • point

I use this chip for cold temperatures of about -80C with a K-type.... it works very well AFTER you linearize the results externally. MAXIM provided me with the formulas which where pretty simple to implement... quite accurate too!

  Are you sure? yes | no

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