Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Chip Model	MAX31865
Supported Sensor Type	PT100, PT1000 RTD
Interface Protocol	SPI
Operating Voltage	3.0V to 3.6V
Temperature Range	-200°C to +850°C
Resolution	15-bit (0.03125°C)
Accuracy	±0.5% typical
Fault Detection	Open/Short Circuit
Board Dimensions	24mm x 18mm
Mounting Holes	4x M2.5

6 reviews

Anonymous

Mar 27, 2026

Rating: 4/5

Great accuracy, minor soldering needed

The sensor readings are very consistent compared to my calibrated thermometer. I had to solder the header pins myself, which was expected, but the board quality is excellent.

Anonymous

Mar 26, 2026

Rating: 4/5

Good for roasting profiles

Using this to monitor bean temperature during roasting. Response time is quick enough to track changes. Would give 5 stars if it came with a terminal block instead of just pads.

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for Arduino Projects

This module works flawlessly with my Arduino Uno. The SPI communication is stable, and the library support makes reading temperatures incredibly easy. Highly recommended for DIY heating control systems.

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable for long-term monitoring

I have been running this module for three months in a greenhouse setup. It handles humidity well and hasn't drifted. The fault detection feature saved me when a wire got chewed by a rodent.

Anonymous

Mar 04, 2026

Rating: 5/5

Excellent value for money

Much cheaper than buying a full industrial transmitter and just as accurate for hobbyist purposes. The documentation online is plentiful, making integration smooth.

Anonymous

Mar 03, 2026

Rating: 5/5

Robust and easy to use

We bought ten of these for our workshop. All of them worked out of the box. The noise rejection is impressive even near our 3D printer motors.

5 FAQ

Q: Does this module work with 5V logic microcontrollers like the standard Arduino Uno?

A: Yes, the MAX31865 chip operates at 3.3V, but the breakout board includes level shifting resistors allowing it to safely interface with 5V logic SPI pins.

Q: Does the board come with a PT100 probe included?

A: No, this listing is for the breakout board module only. You will need to purchase a PT100 or PT1000 sensor probe separately based on your specific temperature range needs.

Q: Can I connect multiple sensors to one microcontroller?

A: Absolutely. Since it uses the SPI protocol, you can daisy-chain or individually select multiple modules using different Chip Select (CS) pins for each board.

Q: Is there a Python library available for Raspberry Pi?

A: Yes, there are several open-source Python libraries available on GitHub specifically designed for the MAX31865 on Raspberry Pi GPIO.

Q: What type of wires should I use to extend the PT100 sensor distance?

A: For best accuracy over longer distances, we recommend using a 3-wire or 4-wire configuration with shielded twisted pair cables to minimize noise interference.

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