MLX90640 24×32 IR Thermal Camera Breakout (110 Degree FoV) Adafruit

DESCRIPTION

RETIRED PRODUCT – We’ve stopped stocking this product or it has been retired by the manufacturer and is no longer for sale. This page remains available for its resources and as a source of potential interest.

You can now add affordable heat-vision to your project and with an Adafruit MLX90640 Thermal Camera Breakout with a 110°x70° field of view. This sensor contains a 24×32 array of IR thermal sensors. When connected to your microcontroller (or Raspberry Pi) it will return an array of 768 individual infrared temperature readings over I2C. It’s like those fancy thermal cameras, but compact and simple enough for easy integration.

This part will measure temperatures ranging from -40°C to 300°C with an accuracy of +- 2°C (in the 0-100°C range). With a maximum frame rate of 16 Hz (the theoretical limit is 32Hz but Adafruit were not able to practically achieve it), It’s perfect for creating your own human detector or mini thermal camera. The code for using this sensor on an Arduino or compatible (the sensor communicates over I2C) or on a Raspberry Pi with Python is available on our resource tab. If using an Arduino-compatible, you’ll need a processor with at least 20KB RAM – a SAMD21 (M0) or SAMD51 (M4) chipset will do nicely. On the Pi, you can even perform interpolation processing with help from the SciPy python library and get some pretty nice results!

This sensor reads the data twice per frame, in a checkerboard pattern, so it’s normal to see a checker-board dither effect when moving the sensor around – the effect isn’t noticeable when things move slowly.

To make it easy to use, they hand-soldered it on a breakout board with a 3.3V regulator and level shifting. So you can use it with any 3V or 5V microcontroller or computer. They’ve even included SparkFun Qwiic compatible STEMMA QT connectors for the I2C bus so you don’t even need to solder! Just plug-n-play with any of our STEMMA QT (JST SH) cables.

FEATURES

• I2C compatible digital interface
• Programmable refresh rate 0.5Hz…64Hz (0.25 ~ 32 FPS)
• 3.3V-5V supply voltage, regulated to 3.3V on breakout
• Current consumption less than 23mA
• Field of view: 110°x75°
• Operating temperature -40°C ÷ 85°C
• Target temperature -40°C ÷ 300°C
• Dimensions: 25.8mm x 17.8mm x 10.5mm / 1.0″ x 0.7″ x 0.4″
• Weight: 3.0g / 0.1oz

RESOURCES

Arduino Library
Python Code