MotorHat

Build Status

Implementing the motor_hat library in elixir for a project. Initial support will be for DC motors only, but will try to expand to a complete functional clone (no pun intended) of this library for elixir plus have a few ideas to extend it.

It's important to note that I said a functional clone, in so far as I am aiming to provide a similar API as closely as I can, but the internals work a bit different - Elixir is not python.

Installation

If available in Hex, the package can be installed as:

  1. Add motor_hat to your list of dependencies in mix.exs:

    def deps do [{:motor_hat, "~> 0.5.2"}] end

configuration

MotorHat needs to be configured before run. `config/dev.exs and config/test.exs' are good examples of how to configure the application for your project.

config :motor_hat,

  # module used for i2c, should be I2c for normal use

  # MotorHat.Test.I2cFake is used for testing to mock the lib out

  i2c: I2c,

  boards: [ # one or more boards to configure and start

    [ 

      # key to use to look up board for calls like get_dc_motor which uses 

      # this key to find the board

      name: :mhat,

      devname: "i2c-1", # busname, i2c-1 is common on the raspberry pi

      address: 0x60, # address on i2c

      # motor config may change in the future right now in only supports

      # dc motors not entirely happy with this.

      motor_config: {

        :dc, # dc instead of stepper

        [:m2, :m3] # motor positions to create, can be :m1 - :m4

      }

    ]

  ]