The Adafruit MAX31855K Thermocouple Amplifier offers a quick and easy way of hooking up a thermocouple to your next microcontroller project. Thermocouples need a cold-compensation reference and a good amplifier which is where the MAX31855K chip comes in. It handles all the electrical complications and provides you with an SPI channel you can interrogate as needed. This board has been improved over time and now has ferrite beads and a filter capacitor to improve the stability, plus an onboard regulator, and level shifting circuitry for 5V compatibility. A very useful, mature gadget.
Supplied as a fully assembled and tested thermocouple amplifier board plus a strip of 0.1in header pins and a 2-way screw terminal block for you to solder on as required. Adafruit only recommend this amplifier for K-type thermocouples although the datasheet mentions several other types. Feel free to experiment, but we only support its use with K-type thermocouples.
- Measurement range -200 to +1350°C in 0.25°C steps
- SPI uses 3 x GPIOs
- 3.3 to 5V power and logic compatible
- Dimensions 20 x 20 x 3.3mm (0.8 x 0.8 x 0.12in.)
- Adafruit part no.: 269
We supply the thermocouples separately.
*Customers looking to resell on eBay or Amazon should contact Adafruit directly.
| Type |
Thermocouple amplifier |
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