SKU: 43637892647

SparkFun Thermocouple Breakout - MAX31855K Boards, Sparkfun Originals, Temperature

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Description

SparkFun Thermocouple Breakout - MAX31855K Boards, Sparkfun Originals, TemperatureThe SparkFun MAX31855K Thermocouple Breakout is a simple 14 bit resolution, SPI compatible, serial interface thermocouple digitizer that makes reading a wide range of temperatures possible. A thermocouple works by taking two wires made of dissimilar metals, connecting them at the two ends, and making a temperature gradient between one end and the other (a hot end and a cold one). Once this is achieved, a voltage potential is formed and current flows.

The SparkFun MAX31855K Thermocouple Breakout is a simple 14-bit resolution, SPI-compatible, serial interface thermocouple digitizer that makes reading a wide range of temperatures possible. A thermocouple works by taking two wires made of dissimilar metals, connecting them at the two ends, and making a temperature gradient between one end and the other (a ‘hot’ end and a ‘cold’ one). Once this is achieved, a voltage potential is formed and current flows. The SparkFun Thermocouple Breakout takes a standard Type-K thermocouple in one end, digitizes the temperature measured and sends that data out the other end via a SPI interface, thereby interpreting the data and translating it for you to read!

With the SparkFun Thermocouple Breakout, the thermocouple?s hot junction can be read from -200�C to +700�C with an accuracy of �2�C while the cold junction, inside the MAX31855K, can only range from -20�C to +85�C while maintaining �2�C accuracy. The MAX31855K constantly measures the temperature of the cold junction using an internal temperature-sensing diode. The MAX31855K requires a power source from +3.0V to +3.6V (+3.0V nominal) and only draws 1.5mA maximum.

The Thermocouple Breakout is designed to accept a standard thermocouple connector, for convenience and compatibility with probes you may already own. These connectors aren?t necessary, and you could solder a thermocouple directly into the through holes labeled ?+? and ?-?. If you decide to solder the thermocouple directly to the breakout board, it is recommended that the thermocouple be mounted for strain relief to avoid breaking the thin wires. Notches for a zip-tie or wire wrapping have been provided in the PCB opposite the header for this purpose.

Features:

  • 14-bit Resolution
  • SPI-Compatible, Serial Interface
  • -200�C to +700�C Temperature Reading with �2�C Accuracy
  • 3.0V to 3.6V (+3.0V nominal) Required
  • Accepts Type-K Thermocouple

Documents:

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SKU: 43637892647

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Lisa
Dallas, US
★★★★★ 1
Weird slimy feel…
Style: 16 Fl Oz (Pack of 1)
Thick sl8my feel 8n my mouth. Very unpleasant.
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Reviewed in the United States on May 23, 2026
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Patty Magaña
Dallas, US
★★★★★ 5
I love this mouthwash!
Style: 33.8 Fl Oz (Pack of 1)
Best mouthwash I have tried! I take a pill for my thyroid every day and it makes my mouth dry severely but this mouthwash has absolutely has been helping me! I can’t say I don’t suffer from it anymore but at least I am glad to say it’s helping.
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Reviewed in the United States on April 15, 2026
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Renee
Alexandria, US
★★★★★ 5
Helps With Dry Mouth, Tastes Great and Easy to Keep On Hand
Size: 27 Count (Pack of 1), Size: 27 Count (Pack of 1)
Update: I have already repurchased more! I love the taste and they work so well with a great taste. I’ve been dealing with dry mouth lately, especially at night, and these Biotene Dry Mouth Lozenges have been really helpful. They dissolve slowly and help keep my mouth feeling more comfortable without being overly sweet or strong. The mint flavor is light and refreshing, which I appreciate because some lozenges can taste too medicinal. These are gentle and easy to use throughout the day or before bed if dryness is bothering me. The packaging is also convenient to keep in a bag or on a bedside table. I like that the lozenges are sugar-free and individually sealed in the blister pack so they stay fresh. I included a photo of the lozenge in my hand so you can see the size and what it looks like out of the package, along with photos of the box and blister pack for reference. These are simple, effective, great taste and a good option to keep on hand if you deal with dry mouth.
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Reviewed in the United States on March 12, 2026
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Debra Lemacks
Alexandria, US
★★★★★ 5
It works and nice mint taste
Size: 27 Count (Pack of 1)
Very good for dry mouth.
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Reviewed in the United States on May 15, 2026
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Lisa Case
Los Angeles, US
★★★★★ 5
Works great
Size: 27 Count (Pack of 1)
Helps with dry mouth alot
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Reviewed in the United States on May 8, 2026

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