alexa-iot

## Alexa Skill for Home Automation

### Overview
This Alexa skill allows you to control your home automation system via voice commands. The skill integrates with an MQTT broker to send commands to your devices.

### Supported Commands
- Turn on/off devices
- Set brightness levels
- Set temperature

### Setup Instructions
1. **Prerequisites**: Ensure you have an MQTT broker set up and running. You will also need an Amazon Developer account to create the Alexa skill.
2. **Create the Alexa Skill**: Go to the Alexa Developer Console and create a new skill. Choose the 'Custom' model and 'Provision your own' backend.
3. **Define the Interaction Model**: Add the necessary intents and slots for your devices and commands. For example:
   - Intent: `TurnOnIntent`
     - Slot: `DeviceType`
     - Slot: `RoomName`
   - Intent: `SetBrightnessIntent`
     - Slot: `DeviceType`
     - Slot: `RoomName`
     - Slot: `Value`
4. **Implement the Backend**: Use the Alexa Skills Kit SDK to handle the intents and send the appropriate MQTT commands. Here is a sample code snippet in Node.js:
```javascript
const Alexa = require('ask-sdk-core');
const mqtt = require('mqtt');

const client = mqtt.connect('mqtt://your-mqtt-broker');

const TurnOnIntentHandler = {
    canHandle(handlerInput) {
        return Alexa.getRequestType(handlerInput.requestEnvelope) === 'IntentRequest'
            && Alexa.getIntentName(handlerInput.requestEnvelope) === 'TurnOnIntent';
   },
    handle(handlerInput) {
        const deviceType = Alexa.getSlot(handlerInput.requestEnvelope, 'DeviceType').value;
        const roomName = Alexa.getSlot(handlerInput.requestEnvelope, 'RoomName').value;
        client.publish(`home/${roomName}/${deviceType}/set`, 'ON');
        return handlerInput.responseBuilder
            .speak(`Turning on the ${deviceType} in the ${roomName}`)
            .getResponse();
    }
};

exports.handler = Alexa.SkillBuilders.custom()
    .addRequestHandlers(TurnOnIntentHandler)
    .lambda();
```
5. **Test and Deploy**: Test your skill using the Alexa Simulator in the Developer Console. Once tested, deploy your skill to the Alexa Skills Store.