Elixir MLX90640

An Elixir library to interface with the MLX90640 Far Infrared Thermal Sensor Array.

An example of a project using this library is Nerves Thermal Camera.

Installation

The package can be installed by adding elixir_mlx90640 to your list of dependencies in mix.exs:

def deps do
  [
    {:elixir_mlx90640, "~> 0.1.13"}
  ]
end

The I2C driver needs to be installed for this library to compile (e.g. libi2c-dev on Debian).

Usage

receiver = self() # a process that will receive the data frames
Mlx90640.start_link(receiver, [ frame_rate: 2 ])

# On each frame, the receiver will receive messages like:
#
#   %Mlx90640.Frame{ data:
#     [
#       [ 23.83, 24.12, 20.69, ... ],
#       [ 20.36, 20.74, 20.71, ... ],
#       ...
#     ]
#   }
#
# Where data is a list of 24 rows, and rows are lists of 32 temperature
# measurements

For more information, read the API documentation.

Acknowledgements

This project contains low-level code derived from the device library provided by Melexis, as well as the generic Linux port by Pimoroni