Overview

This is a 32×24 pixels, 110° field of view, IR array thermal imaging camera, communicating via I2C interface. It is compatible with 3.3V/5V operating voltage, supports host platforms such as Raspberry Pi/Arduino(ESP32)/STM32, etc.

By utilizing the MLX90640 far-infrared thermal sensor array, this module can detect the IR distribution of objects in the field of view, turn the data into surface temperature of the objects by calculation, and then generate thermal images. Due to the small form factor, it can be easily integrated into miscellaneous industrial or intelligent control applications.

Features

• Adopts MLX90640 far-infrared thermal sensor array, 32×24 pixels

• Communicating via I2C interface, configurable to fast mode (up to 1MHz data rate)

• Noise Equivalent Temperature Difference (NETD) 0.1K RMS @1Hz refresh rate

• Onboard voltage translator, compatible with 3.3V/5V operating voltage

• Comes with development resources and manual (examples for Raspberry Pi/Arduino(ESP32)/STM32)

Specifications

• Operating voltage: 3.3V/5V

• Operating current:<23mA

• Communication interface: I2C (address 0x33)

• Field of view (Horizontal×Vertical):

• MLX90640-D55 Thermal Camera: 55°×35° (narrow angle FOV, suit for long range measuring)

• MLX90640-D110 Thermal Camera: 110°×75° (wide angle FOV, suit for short range measuring)

• Operating temperature: -40℃~85℃

• Target temperature: -40℃~300℃

• Resolution: ±1℃

• Refresh rate: 0.5Hz~64Hz (programmable)

• Dimensions: 28mm×16 mm

• Mounting hole size: 2.0mm

Applications

• High precision non-contact temperature measurements

• IR thermal imaging devices, IR thermometers

• Smart home, intelligent building, intelligent lighting

• Industrial temperature control, security monitoring, intrude/movement detection

Pinouts

In the case of working with MCU:

• VCC ↔ 3.3V / 5V

• GND ↔ GND

• SDA ↔ MCU.I2C data line

• SCL ↔ MCU.I2C clock line

Example

Generating IR thermal images of the Raspberry Pi:

Dimensions