Octo (8) MAX31855 thermocouple breakout board for 5V systems (type K, K-type)

Description

Included
1x Octo MAX31855 Breakout Board (5V)
1x
K-type Thermocouple
Description
This is an octo (8) MAX31855 breakout board for 5V systems. This board can read the temperature of eight K-type thermocouples.
As eBay forbids links, I mention that datasheets are available freely on the internet. The board is compatible with Arduino, RPi, and other microcontrollers. Sample Arduino and Raspberry Pi (Python) code can be found by searching online for "GitHub engineertype MAX31855."
The board uses multiplexing to read up to 8 thermocouples. It takes 0.125 seconds to measure the temperature on each thermocouple, allowing all 8 to be read in 1 second. Readings are taken by setting T0, T1, and T2 to the correct value for a given thermocouple, waiting 0.125 seconds, and taking a reading.
The board can measure temperatures from -270°C (-454°F) to +1350°C (2462°F) in 0.25°C increments. The
included thermocouple
can measure temperatures from -50°C (-58°F) to 700°C (1292°F).
On the thermocouple, the red wire is positive and the green wire is negative. If the temperature goes down when you expect it to go up (or vice versa), just switch the two wires! No harm done.
When shipped, this board is configured for 5V operation. However, there is a solder jumper on the board that can be changed to allow
3.3V operation
.
Designed and manufactured in California.
Specifications
IC Part Number
MAX31855KASA+
Operating Voltage
5V
Minimum Temperature
-270°C (-454°F)
Maximum Temperature
1350°C (2462°F)
Temperature Resolution
0.25°C
Header Pitch
0.1"
Dimensions
2.0" x 1.6" (50mm x 40mm)
Mounting Holes
3
IC RoHS Compliance
Yes
IC Supplier
Maxim