Thermocouple Amplifier MAX31855 breakout board (MAX6675 upgrade) - v2.0

Rating:
96% of 100
SKU: ADA269 Brand: Adafruit
Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The MAX31855K does everything for you, and can be easily interfaced...
$28.25 AUD, inc GST
$25.68 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 8th of Sep

Quantity Discounts:

  • 10+ $24.91 (exc GST)
  • 50+ $24.40 (exc GST)

2 from local stock, supplier stock; your order will dispatch . And yes, stock levels and lead times are accurate!

Shipping:

  • $7+ Standard (5+ days*, tracked)
  • $11+ Express (2+ days*, tracked)
  • FREE Pickup (Newcastle only - must order online*)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

Includes headers and screw terminal block, does not include thermocouple

Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The MAX31855K does everything for you, and can be easily interfaced with any microcontroller, even one without an analog input. This breakout board has the chip itself, a 3.3V regulator with 10uF bypass capacitors and level shifting circuitry, all assembled and tested. Comes with a 2 pin terminal block (for connecting to the thermocouple) and pin header (to plug into any breadboard or perfboard). Goes great with Adafruit's 1m K-type thermocouple.

If you need a thermocouple interface that can handle other types of thermocouples, check out Adafruit's 'Universal' MAX31856 amplifier board which can be configured in the Arduino sketch to interface with just about any kind of thermocouple

New! Now uses the MAX31855K instead of the MAX6675, so it can measure a wider temperature measurement range. Please note! the MAX31855 is not pin compatible or drop-in code compatible with the MAX6675. We do have an Arduino library for both chips but you'll need to adjust any existing MAX6675 designs for the new MAX31855. The MAX6675 has been discontinued by Maxim.

  • Works with any K type thermocouple
  • Will not work with any other kind of thermocouple other than K type
  • -200°C to +1350°C output in 0.25 degree increments - note that K thermocouples have about ±2°C to ±6°C accuracy
  • Internal temperature reading
  • 3.3 to 5v power supply and logic level compliant!
  • SPI data output requires any 3 digital I/O pins.
  • Pin headers included

Hey Adafruit even have a handy tutorial on thermocouples which includes an Arduino library, wiring diagrams and example code. How easy is that?

Technical Details

Datasheet, EagleCAD PCB GitHub files, and fritzing library available in the product tutorial

Dimensions (without headers):

  • Length: 20mm/0.8in
  • Width: 20mm/0.8in
  • Height: 3.28mm/0.12in
  • Weight: 1.33g/0.05oz

Revision notes:

  • Version 2.0 now includes ferrite beads and filter capacitor onboard for better stability

Product Comments

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Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

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