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SparkFun Digital Temperature Sensor - TMP102 (Qwiic)

We all like to know the temperature, right? Well, with the SparkFun TMP102 Digital Temperature Sensor, we've made it just about as easy as it gets. Based on the original Digital Temperature Sensor Breakout - TMP102, we've added Qwiic connectors to bring this board into our plug-and-play Qwiic Ecosystem and added an address jumper instead of breaking out the address pin. However, we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.

The TMP102 itself is an easy-to-use digital temperature sensor from Texas Instruments. While some temperature sensors use an analog voltage to represent the temperature, the TMP102 uses the I2C bus of the Arduino to communicate the temperature.

The TMP102 is capable of reading temperatures to a resolution of 0.0625°C, and is accurate up to 0.5°C. The breakout has built-in 4.7kΩ pull-up resistors for I2C communications and runs from 1.4V to 3.6V. I2C communication uses an open drain signaling, so there is no need to use level shifting.


The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.


  • Uses the I2C interface
  • I2C Address: 0x48 by default (Three additional addresses available, as well)
  • 12-bit, 0.0625°C resolution
  • Typical temperature accuracy of ±0.5°C
  • 3.3V sensor
  • Supports up to four TMP102 sensors on the I2C bus at a time
  • 2x Qwiic Connectors

SparkFun Digital Temperature Sensor - TMP102 (Qwiic) Product Help and Resources

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HIH-4030 Humidity Sensor Hookup Guide

December 6, 2016

Measure relative humidity with SparkFun's HIH-4030 Humidity Sensor Breakout.

Python Programming Tutorial: Getting Started with the Raspberry Pi

June 27, 2018

This guide will show you how to write programs on your Raspberry Pi using Python to control hardware.

Graph Sensor Data with Python and Matplotlib

July 23, 2018

Use matplotlib to create a real-time plot of temperature data collected from a TMP102 sensor connected to a Raspberry Pi.

Python GUI Guide: Introduction to Tkinter

August 13, 2018

Tkinter is the standard graphical user interface package that comes with Python. This tutorial will show you how to create basic windowed applications as well as complete full-screen dashboard examples complete with live graph updates from matplotlib.

SparkFun Qwiic Digital Temperature Sensor - TMP102 Hookup Guide

March 26, 2020

Get started using your SparkFun Digital Temperature Sensor - TMP102 (Qwiic) with this Hookup Guide!

Temperature Sensor Comparison

March 18, 2020

A comparison of analog and digital temperature sensors. Which is better?

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

3 Programming

Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
See all skill levels


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