MAX6675 K‑Type Thermocouple Temperature Sensor Module 🌡️🔥

The MAX6675 K‑type Thermocouple Temperature Sensor is a high‑performance module designed for precise high‑temperature measurements in demanding environments. Ideal for Arduino, Raspberry Pi, and other microcontroller platforms, this kit includes a rugged K‑type thermocouple probe and a MAX6675 thermocouple amplifier board with integrated cold junction compensation for reliable readings. With a fine 0.25 °C resolution, it’s an excellent choice for engineers, makers, and educators working with electronics components and sensor modules.

Key Features ✅

• High-temperature measurement using a K‑type thermocouple (ideal for harsh environments)
• Cold junction compensation for stable readings across ambient changes (-20 ~ +80 °C)
• 0.25 °C resolution for fine temperature monitoring
• 3‑wire SPI digital interface for easy MCU integration
• Wide supply voltage range: 3.0–5.5 V (compatible with 3.3 V and 5 V logic)
• Works seamlessly with Arduino, Raspberry Pi, ESP32/ESP8266, and other microcontrollers

Technical Specifications 📐

• Operating voltage: 3.0–5.5 V
• Interface: 3‑wire serial (SPI‑compatible: SCK, CS, SO)
• ADC resolution: 12‑bit (output in 0.25 °C increments)
• Cold junction compensation range: −20 ~ +80 °C
• Thermocouple type: K‑type
• Measurable temperature range (K‑type): 0 ~ 800 °C
• Core IC: MAX6675 thermocouple amplifier/converter

Compatibility 🤝

Directly interfaces with popular development boards and ecosystems:

• Arduino (Uno, Mega, Nano) — libraries available for rapid prototyping
• Raspberry Pi — use SPI via Python or C/C++
• Other microcontroller platforms (ESP32/ESP8266, STM32, etc.)

Typical Applications 🧪

• Industrial temperature regulation and process control
• Home automation and environmental monitoring
• Weather stations and data logging
• 3D printing and heated build platforms
• Scientific research and lab experiments

Package Contents 📦

• 1 × K‑type thermocouple sensor
• 1 × MAX6675 amplifier module

Quick Wiring Guide 🔌

• VCC → 3.3–5 V (matches your board voltage)
• GND → Ground
• SCK → SPI Clock (SCK)
• CS → Chip Select (any digital pin)
• SO → SPI MISO (data out from module)

Note: The MAX6675 is read‑only over SPI (no MOSI required). Ensure the thermocouple leads are connected with correct polarity.

Engineer’s Notes 🛠️

• This module targets high‑temperature measurements; it is not intended for sub‑zero readings.
• For accurate results, avoid electrical noise near heater elements and route thermocouple wires away from high‑current traces.
• Verify the thermocouple tip makes solid thermal contact with the measurement point for best response.

Whether you’re building an Arduino or Raspberry Pi data logger, tuning a PID controller, or integrating robust electronics components into your next project, this MAX6675 K‑type thermocouple module delivers dependable, high‑resolution temperature sensing with straightforward SPI connectivity and flexible voltage support.