Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	MLX90640BAA
Resolution	32 x 24 Pixels
Field of View	55° Horizontal, 35° Vertical
Temperature Range	-40°C to +85°C (Object), -40°C to +125°C (Ambient)
Accuracy	±2°C within typical range
Interface	I2C Digital Interface
Supply Voltage	3.0V to 3.6V
Refresh Rate	Up to 64 Hz
Package Type	TO-39 Metal Can
Manufacturer	Melexis

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Excellent for obstacle detection

Using this for a robotics project to detect warm objects. The 32x24 resolution is sufficient for my needs and the refresh rate is fast enough for real-time processing.

Anonymous

Mar 27, 2026

Rating: 4/5

Good sensor, requires calibration

The module arrived quickly and was well packaged. Out of the box, the readings were slightly off, but after running the calibration routine in the datasheet, it performs very well.

Anonymous

Mar 23, 2026

Rating: 3/5

Steep learning curve

The hardware is fine, but getting the raw data into a usable thermal image took some effort. Would be nice if there were more beginner-friendly example codes included.

Anonymous

Mar 16, 2026

Rating: 5/5

Great for HVAC monitoring

Installed this to monitor temperature distribution in my server room. It provides consistent data and the narrow FOV version fits my specific mounting requirements perfectly.

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for low-res thermal projects

This sensor works exactly as described. The I2C communication is stable and the library support for Arduino and Raspberry Pi is excellent. Great value for a genuine Melexis part.

Anonymous

Mar 06, 2026

Rating: 5/5

Genuine product

Verified the chip markings and performance against the official datasheet. This is definitely an original MLX90640. Highly recommended for professional prototypes.

5 FAQ

Q: Is this compatible with 5V logic microcontrollers?

A: The sensor operates at 3.3V. If you are using a 5V microcontroller like a standard Arduino Uno, you must use a logic level shifter for the SDA and SCL lines to prevent damage.

Q: What is the maximum distance this can measure accurately?

A: Accuracy depends on the object size relative to the pixel field of view. For general human detection, it works well up to 3-5 meters, but precise temperature measurement requires the object to fill multiple pixels.

Q: Do you provide Python libraries for Raspberry Pi?

A: We do not host the libraries directly, but this sensor is fully supported by the official Melexis GitHub repository which includes Python drivers compatible with Raspberry Pi.

Q: Can I use this outdoors in the rain?

A: The TO-39 package itself is not waterproof. For outdoor use, you must house the sensor in an enclosure with an IR-transparent window (like Germanium or specific plastics) to protect it from moisture.

Q: Does this module come with a lens attached?

A: Yes, the MLX90640BAA model comes with a standard lens installed. Please ensure you select the correct suffix (AAB vs BAA) for your specific Field of View requirements.

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