Overview
Adafruit MLX90632 FIR Remote Thermal Temperature Sensor is a non-contact infrared temperature sensor breakout for measuring the temperature of an object without touching it. It is a practical choice for checking surfaces that are very hot, very cold, moving, fragile, or simply inconvenient to probe directly.
This board is built around the MLX90632SLD-DCB sensor and communicates over I2C. It can report both the remote object temperature and the local temperature on the chip. The medical version is factory calibrated for ±0.2°C accuracy from 35°C to 42°C, and it also supports an extended object temperature range of -20°C to 100°C.
The breakout comes in Adafruit's STEMMA QT form factor, with connectors on both sides for quick solderless hookup and easy daisy-chaining with other I2C boards. Onboard voltage regulation and level shifting let it work with both 3V and 5V systems, including Arduino-compatible boards, Raspberry Pi, and other microcontrollers or microcomputers with I2C.
Important: the sensor has a 50° field of view, so it works best when placed only a few centimetres or inches from the target. From farther away, it measures the average temperature over a larger area.
Specification
Technical details for Adafruit MLX90632 FIR Remote Thermal Temperature Sensor.
| Specification | Details |
|---|---|
| Sensor | MLX90632SLD-DCB |
| Interface | I2C |
| Default I2C Address | 0x3A |
| Field of View | 50° |
| Measured Values | Remote object temperature and local on-chip temperature |
| Medical Accuracy Range | ±0.2°C from 35°C to 42°C |
| Extended Object Temperature Range | -20°C to 100°C |
| Logic / Power Compatibility | 3V and 5V systems with onboard regulation and level shifting |
| Connector System | STEMMA QT, compatible with SparkFun Qwiic |
| Address Options | 0x3A default, 0x3B with A0/ADDR set high |
| Board Form | Breakout board with included header for breadboard or perfboard soldering |
Pinout
| Pin | Type | Description |
|---|---|---|
| VIN | Power Input | Supply input for 3V or 5V operation. Match this to your microcontroller logic supply. |
| 3Vo | Power Output | 3.3V output from the onboard regulator, available for light external use up to 100mA. |
| GND | Ground | Common ground for power and logic. |
| SCL | I2C Clock | I2C clock line for communication with the host controller. |
| SDA | I2C Data | I2C data line for communication with the host controller. |
| ADDR | Address Select | Used to change the I2C address from the default 0x3A to 0x3B, allowing up to two boards on the same I2C bus. |
What's Included
- Adafruit MLX90632 FIR Temperature Sensor breakout board
- A bit of header for breadboard or perfboard soldering
Note: STEMMA QT / Qwiic cable is not included.
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