=====================================================================

I've handed these boards over to a friend. Please see his listing here

=====================================================================


You are buying an Octo (8) MAX31855 breakout board for 3.3V systems.  This board can read the temperature of 8 thermocouples.  The datasheet for MAX31855 can be found on Maxim's web site (sorry, eBay doesn't allow links).

You also get a low-mass, highly responsive k-type thermocouple probe capable of measuring -50°C to 700°C (-58°F to 1292°F).

Library and example application for Arduino (look at the two MAX31855x8 examples) and Raspberry Pi (Python) can be found on GitHub, by doing an Internet search for "Github engineertype MAX31855"

This breakout board uses multiplexing to read up to 8 thermocouples. It takes 0.125 seconds to measure the temperature on each thermocouple, so all 8 can be read in 1 second. Please take a look at the sample code to see how take readings. Essentially, you set T0, T1 and T2 to the correct thermocouple - wait 0.125 seconds - then take a reading. The single, dual and quad boards do not use multiplexing so they can be read as fast as the MAX31855 allows.

When shipped, this board is configured for 3.3V operation. However, there is a solder jumper on the board that can be changed to allow 5V operation.

Specifications:
  • Uses MAX31855KASA+ Thermocouple-to-digital converter (type K)
  • Measures -270°C (-454°F) to +1350°C (2462°F) in 0.25°C increments
  • LED indicator shows when the board has power
  • Standard 0.1" header for connecting to microcontroller
  • 0.2" (5.08mm) screw terminals for thermocouple probe wires
  • Three screw holes for mounting the board
  • Dimensions: 2.0" x 1.6" (50mm x 40mm)
  • Compatible with Arduino, PIC, Raspberry Pi and other microcontrollers
Included in this auction:
  1. Octo MAX31855 thermocouple breakout board for 3.3V systems K-type
  2. One low-mass k-type thermocouple probe (you can get more here)

The IC's were bought directly from Maxim, and are RoHS compliant. The board was assembled using lead-free solder. Assembled and tested in California.

Bid with confidence - eBay member since 1999. 100% positive feedback!
Click here to see my feedback for everything I've sold.