# Homex
```elixir
Mix.install([
{:homex, path: __DIR__},
], config: [
homex: [
entities: [MySwitch, MyTemperature, MyHumidity, MyLight]
]
])
```
## Section
```elixir
defmodule MySwitch do
use Homex.Entity.Switch, name: "my-switch"
def handle_on(state) do
IO.puts("Switch turned on")
{:noreply, state}
end
def handle_off(state) do
IO.puts("Switch turned off")
{:noreply, state}
end
end
defmodule MyTemperature do
use Homex.Entity.Sensor,
name: "my-temperature",
unit_of_measurement: "C",
device_class: "temperature"
def handle_update(state) do
{:reply, [state: Enum.random(-40..40//1)], state}
end
end
defmodule MyHumidity do
use Homex.Entity.Sensor,
name: "my-humidiy",
unit_of_measurement: "%",
device_class: "humidity"
def handle_update(state) do
{:reply, [state: Enum.random(20..90//1)], state}
end
end
defmodule MyLight do
use Homex.Entity.Light, name: "my-light"
def handle_brightness(brightness, state) do
{:ok, percentage} = convert_brightness(brightness, 0)
IO.puts("Light set to #{percentage}%")
{:reply, [brightness: brightness], state}
end
end
```
```elixir
Logger.put_application_level(:emqtt, :info)
```
```elixir
{:ok, pid} = Homex.start_link()
```
```elixir
Homex.publish(MySwitch.command_topic(), MySwitch.on())
```
```elixir
Homex.publish(MySwitch.command_topic(), MySwitch.off())
```
```elixir
Homex.publish(MyLight.brightness_command_topic(), "138")
```
