adafruit_mlx90614

CircuitPython module for the MLX90614 IR object temperature sensor.

• Author(s): Mikey Sklar based on code from these projects: Limor Fried - https://github.com/adafruit/Adafruit-MLX90614-Library Bill Simpson - https://github.com/BillSimpson/ada_mlx90614 Mike Causer - https://github.com/mcauser/micropython-mlx90614

Implementation Notes

Hardware:

• Adafruit Melexis Contact-less Infrared Sensor - MLX90614 3V (Product ID: 1747)
• Adafruit Melexis Contact-less Infrared Sensor - MLX90614 5V (Product ID: 1748)
• Sensors: https://www.adafruit.com/product/1747 https://www.adafruit.com/product/1748
• Datasheet: https://cdn-shop.adafruit.com/datasheets/MLX90614.pdf

Software and Dependencies:

• Adafruit CircuitPython firmware for the supported boards: https://circuitpython.org/downloads

class adafruit_mlx90614.MLX90614(i2c_bus, address=90)

Create an instance of the MLX90614 temperature sensor.

Parameters:

• i2c_bus (I2C) – The I2C bus the MLX90614 is connected to. Do not use an I2C bus speed of 400kHz. The sensor only works at the default bus speed of 100kHz.
• address (int) – I2C device address. Defaults to 0x5A.

Quickstart: Importing and using the MLX90614

Here is an example of using the MLX90614 class. First you will need to import the libraries to use the sensor

import board
import adafruit_mlx90614

Once this is done you can define your board.I2C object and define your sensor object

i2c = board.I2C()
mlx = adafruit_mlx90614.MLX90614(i2c)

Now you have access to the ambient_temperature attribute

temperature = mlx.ambient_temperature

ambient_temperature

Ambient Temperature in Celsius.

object_temperature

Object Temperature in Celsius.