# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## Overview

![the sensor reading the ambient temperature and temperature from a cup filled with a warm liquid](https://cdn-learn.adafruit.com/assets/assets/000/139/362/medium800/adafruit_products_6403-05.jpg?1756841235 )

Remote infrared sensors are unique in their ability to measure something they are pointed at, but not touching, and we've been looking for a replacement for the [now-discontiued TMP007 for a few years](https://www.adafruit.com/product/2023). The **Adafruit MLX90632 FIR Temperature Sensor** features a compact and low cost 'remote' infrared sensor. These are great when you want to measure the temperature of something very hot or very cold or maybe something that's delicate and tough to attach a probe to.

![front view of the MLX90632 sensor](https://cdn-learn.adafruit.com/assets/assets/000/139/068/medium800/adafruit_products_6403-04.jpg?1755177176 )

This sensor has a 50˚ field of view, so it will work best when only a few cm/inches away from the item being measured, otherwise you'll be getting an average of a large area.

Melexis is famous for their infrared sensor technology ([we stock a lot of their IR thermal sensors!](https://www.adafruit.com/search?q=mlx)) and the MLX90632 is pick-and-placeable with a I2C interface which makes it a great match for any microcontroller or microcomputer. **This breakout board comes with the MLX90632SLD-DCB which is 'medical grade'.** The medical version is factory calibrated with an accuracy of ±0.2˚C within the narrow object temperature range from 35 to 42˚C for medical applications. You can also put it into 'extended' mode for measuring object temperatures from -20 to 100˚C. Of course, you can also measure the 'local' temperature on chip as well.

![back view of the breakout](https://cdn-learn.adafruit.com/assets/assets/000/139/069/medium800/adafruit_products_6403-02.jpg?1755177225 )

To get you going fast, we spun up a custom-made PCB in the [**STEMMA QT** form factor](https://www.adafruit.com/?q=stemma%20qt%20sensor "STEMMA QT form factor"), making them easy to interface with. The [STEMMA QT connectors](https://learn.adafruit.com/introducing-adafruit-stemma-qt/what-is-stemma-qt) on either side are compatible with the [SparkFun Qwiic](https://www.sparkfun.com/qwiic) I2C connectors. This allows you to make solderless connections between your development board and the MLX90632 or to chain them with a wide range of other sensors and accessories using a [**compatible cable**](https://www.adafruit.com/?q=stemma%20qt%20cable)  ([QT Cable is not included, but we have a variety in the shop](https://www.adafruit.com/?q=stemma+qt+cable&sort=BestMatch)).

![stemma qt view of the breakout](https://cdn-learn.adafruit.com/assets/assets/000/139/070/medium800/adafruit_products_6403-03.jpg?1755177271 )

We also include a bit of header if you want to solder this into a breadboard or perfboard. Level shifting and voltage regulation on board means it will work with any 3V or 5V microcontrollers / microcomputers that have I2C so it can get you temperature whether its on a classic Arduino compatible or a Raspberry Pi computer.

![breakout with header pins below](https://cdn-learn.adafruit.com/assets/assets/000/139/071/medium800/adafruit_products_6403-01.jpg?1755177340 )

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## Pinouts

![front and back image of the mlx90632 breakout](https://cdn-learn.adafruit.com/assets/assets/000/139/366/medium800/adafruit_products_double.jpg?1756842500 )

The default I2C address is **0x3A**.

## Power Pins

- **VIN**  - this is the power pin. It can be powered by 3V or 5V. Give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V.
- **3Vo** - this is the 3.3V output from the voltage regulator, you can grab up to 100mA from this if you like.
- **GND**  - common ground for power and logic.

## I2C Logic Pins

- **SCL** - I2C clock pin, connect to your microcontroller's I2C clock line. This pin can use 3-5V logic, and there's a **10K pullup** on this pin.
- **SDA** - I2C data pin, connect to your microcontroller's I2C data line. This pin can use 3-5V logic, and there's a **10K pullup** on this pin.
- **[STEMMA QT](https://learn.adafruit.com/introducing-adafruit-stemma-qt) -** These connectors allow you to connect to development boards with **STEMMA QT** (Qwiic) connectors or to other things with [various associated accessories](https://www.adafruit.com/?q=JST%20SH%204).

## Address Pin and Jumper

You can change the I2C address with either the **ADDR** pin on the front of the board or the **address jumper** on the back of the board, labeled **A0** on the board silk.

This pin lets you to chain up to 2 of these boards together on the same pair of I2C clock and data pins. To do so, you **solder the jumper "closed"** by connecting the two pads **or** connect the  **ADDR** pin to **VIN**. The default I2C address is  **0x3A**. The other address options can be calculated by “adding” the value of **ADDR** / **A0** to the base of  **0x3A**.

**A0**  sets the lowest bit with a value of  **1**. ** ** The final address is  **0x3A + A0**  which would be  **0x3B**.

If  **A**** 0 ** is soldered closed or** ADDR **is connected to** VIN **, the address is ** 0x3A + 1 = 0x3B**

The table below shows all possible addresses, and whether the pin should be high (closed) or low (open).

![i2c address table showing addr should be low (default) for 0x3A or high for 0x3B](https://cdn-learn.adafruit.com/assets/assets/000/139/367/medium800/adafruit_products_Screenshot_2025-09-02_161103.png?1756843904 )

## Power LED and Jumper

- **Power LED -** In the upper left corner, above the STEMMA connector, on the front of the board, is the power LED, labeled **on**. It is a green LED.
- **LED jumper ** - This jumper is located on the back of the board and is labeled **LED** on the board silk. Cut the trace on this jumper to cut power to the " **on**" LED.

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## CircuitPython & Python

It's easy to use the **MLX90632 breakout** with Python or CircuitPython, and the [Adafruit\_CircuitPython\_MLX90632](https://github.com/adafruit/Adafruit_CircuitPython_MLX90632) module. This module allows you to easily write Python code to read ambient and object temperatures with the sensor.

You can use this driver with any CircuitPython microcontroller board or with a computer that has GPIO and Python [thanks to Adafruit\_Blinka, our CircuitPython-for-Python compatibility library](https://learn.adafruit.com/circuitpython-on-raspberrypi-linux).

## CircuitPython Microcontroller Wiring

First wire up the breakout to your board exactly as follows. The following is the breakout wired to a Feather RP2040 using the STEMMA connector:

- **Board STEMMA 3V** to **breakout STEMMA **** VIN (red wire)**  
- **Board STEMMA GND** to **breakout**  **STEMMA** **GND (black wire)**  
- **Board STEMMA SCL** to **breakout**  **STEMMA** **SCL (yellow wire)**  
- **Board STEMMA SDA** to **breakout**  **STEMMA** **SDA (blue wire)**

![feather fritzing with stemma qt cable](https://cdn-learn.adafruit.com/assets/assets/000/139/393/medium640/adafruit_products_feather_stemma_bb.jpg?1756912270)

The following is the breakout wired to a Feather RP2040 using a solderless breadboard:

- **Board 3V** to **breakout** **VIN (red wire)**  
- **Board GND** to **breakout**  **GND (black wire)**  
- **Board SCL** to **breakout**  **SCL (yellow wire)**  
- **Board SDA** to **breakout**  **SDA (blue wire)**

![feather fritzing with breadboard](https://cdn-learn.adafruit.com/assets/assets/000/139/394/medium640/adafruit_products_feather_bb_bb.jpg?1756912308)

## Python Computer Wiring

Since there are _dozens_ of Linux computers/boards you can use, we will show wiring for Raspberry Pi. For other platforms, [please visit the guide for CircuitPython on Linux to see whether your platform is supported](https://learn.adafruit.com/circuitpython-on-raspberrypi-linux).

Here's the Raspberry Pi wired with I2C using the STEMMA connector:

- **Pi 3V** to **breakout STEMMA** **VIN (red wire)**  
- **Pi GND** to **breakout**  **STEMMA** **GND (black wire)**  
- **Pi SCL** to **breakout**  **STEMMA** **SCL (yellow wire)**  
- **Pi SDA** to **breakout**  **STEMMA** **SDA (blue wire)**

![raspberry pi fritzing to mlx90632 with stemma qt cable](https://cdn-learn.adafruit.com/assets/assets/000/139/558/medium640/adafruit_products_piStemma_bb.jpg?1757104884)

Here's the Raspberry Pi wired with I2C using a solderless breadboard:

- **Pi 3V** to **breakout** **VIN (red wire)**  
- **Pi GND** to **breakout**  **GND (black wire)**  
- **Pi SCL** to **breakout**  **SCL (yellow wire)**  
- **Pi SDA** to **breakout**  **SDA (blue wire)**

![raspberry pi fritzing with breadboard](https://cdn-learn.adafruit.com/assets/assets/000/139/396/medium640/adafruit_products_piBB_bb.jpg?1756912422)

## Python Installation of MLX90632 Library

You'll need to install the **Adafruit\_Blinka** library that provides the CircuitPython support in Python. This may also require enabling I2C on your platform and verifying you are running Python 3. [Since each platform is a little different, and Linux changes often, please visit the CircuitPython on Linux guide to get your computer ready](https://learn.adafruit.com/circuitpython-on-raspberrypi-linux)!

Once that's done, from your command line run the following command:

- `pip3 install adafruit-circuitpython-mlx90632`

If your default Python is version 3 you may need to run 'pip' instead. Just make sure you aren't trying to use CircuitPython on Python 2.x, it isn't supported!

## CircuitPython Usage

To use with CircuitPython, you need to first install the **Adafruit\_CircuitPython\_MLX90632** library, and its dependencies, into the **lib** folder on your **CIRCUITPY** drive. Then you need to update **code.py** with the example script.

Thankfully, we can do this in one go. In the example below, click the **Download Project Bundle** button below to download the necessary libraries and the **code.py** file in a zip file. Extract the contents of the zip file, and copy the **entire**  **lib**  **folder** and the **code.py** file to your **CIRCUITPY** drive.

Your **CIRCUITPY/lib** folder should contain the following folder and file:

- **adafruit\_bus\_device/**
- **adafruit\_mlx90632.mpy**

![CIRCUITPY drive](https://adafruit.github.io/Adafruit_CircuitPython_Bundle/mlx90632_mlx90632_simpletest.py.png )

## Python Usage

Once you have the library `pip3` installed on your computer, copy or download the following example to your computer, and run the following, replacing **code.py** with whatever you named the file:

`python3 code.py`

## Example Code

**If running CircuitPython:** Once everything is saved to the **CIRCUITPY** drive, [connect to the serial console](https://learn.adafruit.com/welcome-to-circuitpython/kattni-connecting-to-the-serial-console) to see the data printed out!

**If running Python:** The console output will appear wherever you are running Python.

https://github.com/adafruit/Adafruit_CircuitPython_MLX90632/blob/main/examples/mlx90632_simpletest.py

First, the MLX90632 sensor is recognized over I2C. Then, in the loop, it prints out the ambient temperature and the object temperature readings.

![the circuitpython temperature readings in the console](https://cdn-learn.adafruit.com/assets/assets/000/139/471/medium800/adafruit_products_Screenshot_2025-09-04_102309.png?1756995820 )

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## Python Docs

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## Arduino

Using the MLX90632 breakout with Arduino involves wiring up the breakout to your Arduino-compatible microcontroller, installing the [Adafruit\_MLX90632](https://github.com/adafruit/Adafruit_MLX90632) library, and running the provided example code.

## Wiring

Wire as shown for a **5V** board like an Uno. If you are using a **3V** board, like an Adafruit Feather, wire the board's 3V pin to the sensor VIN.

Here is an Adafruit Metro wired up to the sensor using the STEMMA QT connector:

- **Board 5V** to **breakout** **VIN (red wire)**  
- **Board GND** to **breakout**  **GND (black wire)**  
- **Board SCL** to **breakout**  **SCL (yellow wire)**  
- **Board SDA** to **breakout**  **SDA (blue wire)**

![metro fritzing with stemma](https://cdn-learn.adafruit.com/assets/assets/000/139/385/medium640/adafruit_products_metroSTEMMA_bb.jpg?1756911905)

Here is an Adafruit Metro wired up using a solderless breadboard:

- **Board 5V** to **breakout** **VIN (red wire)**  
- **Board GND** to **breakout**  **GND (black wire)**  
- **Board SCL** to **breakout**  **SCL (yellow wire)**  
- **Board SDA** to **breakout**  **SDA (blue wire)**

![metro fritzing with breadboard](https://cdn-learn.adafruit.com/assets/assets/000/139/386/medium640/adafruit_products_metroBB_bb.jpg?1756911985)

## Library Installation

You can install the **Adafruit\_MLX90632** library for Arduino using the Library Manager in the Arduino IDE.

![arduino library ide menu](https://cdn-learn.adafruit.com/assets/assets/000/139/374/medium800/adafruit_products_Arduino_Open_Library_Manager.png?1756909153 )

Click the **Manage Libraries ...** menu item, search for **Adafruit MLX90632** , and select the **Adafruit MLX90632** library:

![mlx90632 in the library install menu](https://cdn-learn.adafruit.com/assets/assets/000/139/376/medium800/adafruit_products_Screenshot_2025-09-03_093051.png?1756909200 )

If asked about dependencies, click "Install all".

![the mlx90632 dependencies (busio)](https://cdn-learn.adafruit.com/assets/assets/000/139/377/medium800/adafruit_products_Screenshot_2025-09-03_093102.png?1756909234 )

If the "Dependencies" window does not come up, then you already have the dependencies installed.

Warning: If the dependencies are already installed, you must make sure you update them through the Arduino Library Manager before loading the example!

## Example Code
https://github.com/adafruit/Adafruit_MLX90632/blob/main/examples/test_MLX90632/test_MLX90632.ino

Upload the sketch to your board and open up the Serial Monitor ( **Tools -\> Serial Monitor** ) at 115200 baud. You'll see the MLX90632 recognized over I2C.

![the mlx90632 setup print out from the example sketch](https://cdn-learn.adafruit.com/assets/assets/000/139/378/medium800/adafruit_products_Screenshot_2025-09-03_100422.png?1756909350 )

Then, the ambient and object temperatures are printed to the Serial Monitor.

![ambient and object temperature reading in the serial monitor](https://cdn-learn.adafruit.com/assets/assets/000/139/379/medium800/adafruit_products_Screenshot_2025-09-03_100111.png?1756909372 )

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## Arduino Docs

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## WipperSnapper

![](https://cdn-learn.adafruit.com/assets/assets/000/139/723/medium800/adafruit_products_8cn0KnrtNO.png?1758131713)

## What is WipperSnapper

WipperSnapper is a firmware designed to turn any WiFi-capable board into an Internet-of-Things device without programming a single line of code. WipperSnapper connects to [Adafruit IO](https://io.adafruit.com/), a web platform designed ([by Adafruit!](https://www.adafruit.com/about)) to _display_, _respond_, and _interact_ with your project's data.

Simply load the WipperSnapper firmware onto your board, add credentials, and plug it into power. Your board will automatically register itself with your Adafruit IO account.

From there, you can add _components_ to your board such as buttons, switches, potentiometers, sensors, and more! Components are _dynamically _added to hardware, so you can immediately start interacting, logging, and streaming the data your projects produce without writing code.

If you've never used WipperSnapper, click below to read through the quick start guide before continuing.

[Quickstart: Adafruit IO WipperSnapper](https://learn.adafruit.com/quickstart-adafruit-io-wippersnapper)
## Wiring
First, wire up a MLX90632 to your board exactly as follows. Here is an example of the MLX90632 wired to an [Adafruit ESP32 Feather V2](https://www.adafruit.com/product/5400) using I2C [with a STEMMA QT cable (no soldering required)](https://www.adafruit.com/product/4210)

- **Board 3V**  to **sensor VIN (red wire on STEMMA QT)**  
- **Board GND**  to **sensor GND (black wire on STEMMA QT)**  
- **Board SCL**  to **sensor SCL (yellow wire on STEMMA QT)**  
- **Board SDA**  to **sensor SDA (blue wire on STEMMA QT)**

![](https://cdn-learn.adafruit.com/assets/assets/000/139/726/medium640/adafruit_products_mlx90632_featherV2_stemma_bb.png?1758132103)

![](https://cdn-learn.adafruit.com/assets/assets/000/140/025/medium640/adafruit_products_mlx90632_featherV2_bb_bb.png?1758918980)

## Usage

Connect your board to Adafruit IO Wippersnapper and **[navigate to the WipperSnapper board list](https://io.adafruit.com/wippersnapper).**

On this page, **select the WipperSnapper board you're using** to be brought to the board's interface page.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/728/medium800/adafruit_products_ezeTCV1mRc.png?1758132216)

If you do not see your board listed here - you need [to connect your board to Adafruit IO](https://learn.adafruit.com/quickstart-adafruit-io-wippersnapper) first.

On the device page, quickly  **check that you're running the latest version of the WipperSnapper firmware**.

The device tile on the left indicates the version number of the firmware running on the connected board.

- **If the firmware version is green with a checkmark -**  continue with this guide.
- **If the firmware version is red with an exclamation mark "!" -**  [update to the latest WipperSnapper firmware](https://learn.adafruit.com/quickstart-adafruit-io-wippersnapper) on your board before continuing.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/729/medium640/adafruit_products_X0pCOZBVl1.png?1758132304)

![](https://cdn-learn.adafruit.com/assets/assets/000/139/730/medium640/adafruit_products_uXZwHJcy3h.png?1758132310)

Next, make sure the sensor is plugged into your board and click the ** I2C Scan ** button.

![](https://cdn-learn.adafruit.com/assets/assets/000/113/177/medium800/sensor_page_crop_scan.png?1657724520)

You should see the MLX90632's default I2C address of `0x3A` pop-up in the I2C scan list.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/731/medium800/adafruit_products_Screenshot_2025-09-17_190615.png?1758132389)

###  I don't see the sensor's I2C address listed! 


First, double-check the connection and/or wiring between the sensor and the board.

Then, reset the board and let it re-connect to Adafruit IO WipperSnapper.

With the sensor detected in an I2C scan, you're ready to add the sensor to your board.

**Click the New Component button or the + button** to bring up the component picker.

![](https://cdn-learn.adafruit.com/assets/assets/000/127/931/medium800/sensor_page_temperature___humidity_06_AddComponent.png?1708631009)

Adafruit IO supports a large amount of components. To quickly find your sensor, type `MLX90632` into the search bar, then select the  **MLX90632** component.

You can choose from the extended temperature range with lower accuracy, or the higher accuracy medical temperature range (recommended for most use cases). See the product page or datasheet for more details.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/732/medium800/adafruit_products_YwTRHlNQKm.png?1758132658)

On the component configuration page, the MLX90632's sensor address should be listed along with the sensor's settings.

The  **Send Every**  option is specific to each sensor's measurements. This option will tell the Feather how often it should read from the MLX90632 sensor and send the data to Adafruit IO. Measurements can range from every second to every 24 hours.

For this example, set the  **Send Every ** interval to every 30 seconds.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/733/medium800/adafruit_products_l9xyaJ4hdB.png?1758132714)

Your device interface should now show the sensor components you created. After the interval you configured elapses, WipperSnapper will automatically read values from the sensor(s) and send them to Adafruit IO.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/734/medium800/adafruit_products_SpxDyGd82q.png?1758132817)

To view the data that has been logged from the sensor, click on the graph next to the sensor name.

![](https://cdn-learn.adafruit.com/assets/assets/000/139/735/medium800/adafruit_products_b8vK68lJe8.png?1758132849)

Here you can see the feed history and edit things about the feed such as the name, privacy, webhooks associated with the feed and more. If you want to learn more about how feeds work, [check out this page](https://learn.adafruit.com/all-the-internet-of-things-episode-four-adafruit-io/advanced-feeds).

![](https://cdn-learn.adafruit.com/assets/assets/000/139/736/medium800/adafruit_products_Kg3ly8PriG.png?1758133050)

# Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

## Downloads

## Files

- [MLX90632 Datasheet](https://cdn-learn.adafruit.com/assets/assets/000/139/072/original/MLX90632-Datasheet-Melexis.PDF?1755177419)
- [EagleCAD PCB files on GitHub](https://github.com/adafruit/Adafruit-MLX90632-FIR-Remote-Thermal-Temperature-Sensor-PCB)
- [3D models on GitHub](https://github.com/adafruit/Adafruit_CAD_Parts/tree/main/6403%20MLX90632%20FIR%20Sensor)
- [Fritzing object in the Adafruit Fritzing Library](https://github.com/adafruit/Fritzing-Library/blob/master/parts/Adafruit%20MLX90632%20FIR%20Remote%20Temperature%20Sensor.fzpz)

## Schematic and Fab Print
![schematic for the mlx90632](https://cdn-learn.adafruit.com/assets/assets/000/139/073/medium800/adafruit_products_schem.png?1755178846 )

![pcb fabrication print for the breakout](https://cdn-learn.adafruit.com/assets/assets/000/139/074/medium800/adafruit_products_fab.png?1757085891 dimensions are in inches)

![](https://cdn-learn.adafruit.com/assets/assets/000/139/364/medium800/adafruit_products_6403_MLX90632_FIR_Sensor.jpg?1756841435 )


## Primary Products

### Adafruit MLX90632 FIR Remote Thermal Temperature Sensor

[Adafruit MLX90632 FIR Remote Thermal Temperature Sensor](https://www.adafruit.com/product/6403)
Remote infrared sensors are unique in their ability to measure something they are pointed at, but not touching, and we've been looking for a replacement for the [now-discontiued TMP007 for a few years](https://www.adafruit.com/product/2023). The  **Adafruit MLX90632...**

In Stock
[Buy Now](https://www.adafruit.com/product/6403)
[Related Guides to the Product](https://learn.adafruit.com/products/6403/guides)

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