Grove - Thermal Imaging Camera / IR Array MLX90640 - 55°

This compact Grove thermal imaging module uses a 32×24 MLX90640 sensor array to detect and visualise temperature changes in its surroundings. With a measurement range from -40°C to 300°C and an accuracy of ±1.5°C, it's ideal for detecting heat patterns from a distance and displaying low-resolution thermal images.

Data is transferred over I2C, making integration straightforward. However, due to the memory demands of thermal image processing, a more capable microcontroller is required with at least 20k RAM - boards like the Arduino Uno are not suitable.

The sensor has a field of view of 55°×35° and supports refresh rates from 0.5Hz to 64Hz. It uses the Grove I2C interface for plug-and-play connection and requires a Grove cable. Libraries for Arduino and Python are available to get started quickly.

Features

• 32×24 MLX90640 thermal sensor array
• Detects temperature from a distance with ±1.5°C accuracy
• Temperature measurement range: -40°C to 300°C
• Field of view: 55° × 35°
• Refresh rate selectable from 0.5Hz to 64Hz
• Grove I2C interface for easy connection
• Requires microcontroller with over 20KB RAM
• Compatible with Grove development boards (e.g. Arch Mix)
• Arduino and Python libraries are available
• Operating voltage: 3V – 3.6V
• Current consumption: ~18mA
• I2C address: 0x33

Specifications

Thermal sensor	32×24 array MLX90640
Operating Voltage	3.3V – 5V
Current consumption	~18mA
FOV (Field of View)	110° × 75°
Temperature Measurement Range	-40°C to 300°C
Temperature Resolution	±1.5°C
Refresh Rate	0.5Hz – 64Hz
Interface	I2C Grove interface
I2C Address	0x33

Resources

• Product Wiki
• MLX90640 datasheet

Package Contents

• 1x Grove - Thermal Imaging Camera / IR Array MLX90640 - 55°