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Measure Temperature with a Sensor Made for Embedded Builds

The Temperature Sensor MCP9808 High Accuracy I2C Breakout Board is a temperature sensor with i2c designed for temperature logging, thermal control, and equipment monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Voltage - Supply: 2.7V ~ 5.5V; Interface: I2C; Accuracy: 0.25ºC typical.

Important: Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.

Why you’ll love it

  • Up to 8 on a single I2C bus: Up to 8 on a single I2C bus with adjustable address pins
  • 2.7V to 5.5V power and logic voltage range: 2.7V to 5.5V power and logic voltage range
  • Power range: 2.7V ~ 5.5V
  • Current draw: 200 μA (typical)
  • Expected accuracy: 0.25ºC typical
  • Useful spec: 0.9g

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What you can build

This sensor is a good fit for thermostats, incubators, battery monitors, weather nodes, and thermal data loggers.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus an I2C cable or jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include probe mounts, thermal paste if needed, and a data logger, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product Temperature Sensor MCP9808 High Accuracy I2C Breakout Board
Voltage - Supply 2.7V ~ 5.5V
Operating Current 200 μA (typical)
Accuracy 0.25ºC typical
Weight 0.9g
Sensing Temperature -40ºC ~ 125ºC
Operating Temperature -40ºC ~ 125ºC
Interface I2C

Wiring & usage notes

Connect VCC, GND, SDA, and SCL to your controller. Use the correct board voltage and I2C address in your code. Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.

What’s in the box

1 × Temperature Sensor MCP9808 High Accuracy I2C Breakout Board

Frequently Asked Questions

What does the Temperature Sensor MCP9808 High Accuracy I2C Breakout Board measure? It is designed to measure temperature or heat.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this I2C sensor? This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.
What affects accuracy? Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Build with this board

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Notes from the bench

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Ask the community

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