Adafruit
MLX90632 FIR Remote Thermal Temperature Sensor
· MPN: ADA6403
This compact breakout uses Melexis' MLX90632 FIR sensor to read the temperature of a target without making contact. It's handy for checking surfaces that are...
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This compact breakout uses Melexis' MLX90632 FIR sensor to read the temperature of a target without making contact. It's handy for checking surfaces that are hot, cold, moving, delicate or awkward to reach with a probe, and it can also report its own local on-chip temperature.
The fitted MLX90632SLD-DCB is the medical-grade version, factory calibrated for high accuracy in the 35 to 42˚C range for medical applications. You can also switch it into extended mode to measure object temperatures from -20 to 100˚C. With a 50˚ field of view, it works best when used only a few centimetres from the item being measured, rather than averaging a larger area from farther away.
Adafruit has mounted the sensor on a custom PCB in the STEMMA QT form factor, with JST-SH connectors on both sides for quick solderless I2C wiring. These connectors are compatible with SparkFun Qwiic, so it's easy to add into an existing I2C chain with a suitable cable. A strip of header is also included if you'd prefer to solder it into breadboard or perfboard.
On-board voltage regulation and level shifting mean it can be used with both 3V and 5V microcontrollers or microcomputers over I2C, making it a neat fit for Arduino-compatible boards, Raspberry Pi and similar platforms.
Features:
- Non-contact sensing: Measures the temperature of an object it is pointed at without touching it.
- Medical-grade version: Breakout includes the MLX90632SLD-DCB sensor.
- Medical application accuracy: Factory calibrated with an accuracy of ±0.2˚C within the narrow object temperature range from 35 to 42˚C for medical applications.
- Extended measurement mode: Can measure object temperatures from -20 to 100˚C.
- Local temperature reading: Can also measure the local temperature on chip.
- STEMMA QT form factor: Custom PCB makes interfacing quick and tidy.
- Qwiic compatible: STEMMA QT connectors on either side are compatible with SparkFun Qwiic I2C connectors.
- Header included: Includes a bit of header for breadboard or perfboard installation.
- 3V and 5V compatible: On-board level shifting and voltage regulation support use with any 3V or 5V microcontrollers / microcomputers that have I2C.
Specifications:
- Calibration: Factory calibrated
- Temperature calculation: External ambient and object temperature calculation
- Standard measurement resolution: 0.02°C
- Medical measurement resolution: 0.01°C
- Power: Supply voltage of 3.3V, supply current 1mA (sleep current less than 2.5uA)
- Interface: I2C compatible digital interface
- I2C address: Software definable I2C address with 1 LSBbit external address pin
- Field of View: 50°
- Refresh rate: Default refresh rate 0.5s, configurable between 16ms and 2s
- Post-calibration: Integrated post-calibration option
- Product Dimensions: 25.5mm x 17.7mm x 4.7mm / 1.0" x 0.7" x 0.2"
- Product Weight: 1.7g / 0.1oz
A compatible STEMMA QT or Qwiic cable is needed for plug-and-play use and is not included. This board is a good fit for non-contact surface temperature checks, compact instruments, appliance monitoring and medical or lab prototypes where a touch probe isn't practical.
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
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Sensors & Input
MLX90632 Datasheet
Datasheet · 1.1 MB · Click any page to view full size
Supplier page — adafruit.com
Supplier Description · 1.1 MB · Click any page to view full size
