Libraries
Registering a device
Now, we are able to send commands to Amazon Echo
How to use Amazon Alexa, ESP32 and Amazon Echo to control LEDs
ESP8266 schematic
Summary

Published July 18, 2019

Smart Home: ESP8266/ESP32 with Alexa and Amazon Echo

Integrate Alexa with your ESP8266 (ESP32) board.

BeginnerFull instructions provided13,398

Smart Home: ESP8266/ESP32 with Alexa and Amazon Echo

Things used in this project

Hardware components

Espressif ESP8266 ESP-01

Espressif ESP32S

Amazon Alexa Echo Dot

Adafruit NeoPixel Ring: WS2812 5050 RGB LED

Story

I've created a project that integrare Amazon Echo with ESP8266. The result is shown below:

Libraries

To build this project you need the following libraries:

fauxmoESP

ESPAsyncTCP

AsyncTCP

You can install these two libraries in the same way you did for fauxmoESP.

Registering a device:

You have to click on “Add new device” and then:

Finally, the Alexa starts looking for new connected devices

That’s all. The device now is connected to Amazon Echo. As you have noticed, using a few lines of code we have connected our ESP8266 to Amazon Echo through Alexa.

Now, we are able to send commands to Amazon Echo:

Alexa, turn on the <device_name>Alexa, turn off the <device name>

These two commands turn on and off the devices.

Do you know you can control RGB LEDs using Firebase realtime database?

How to use Amazon Alexa, ESP32 and Amazon Echo to control LEDs

Now we know how to interact with our ESP8266 using voice commands exploiting the Amazon Alexa capabilities to understand our language. Now we can build a more complex Smart Home project supposing we want to control two different LED strips:

A NeoPixel LED Ring
A NeoPixel LED Strip

In this project, we want to control them independently, so it is necessary to register two different devices to Amazon Echo.

ESP8266 schematic

Before diving into the details about how to control these two different devices using Amazon Alexa, ESP8266 and Amazon Echo, it is useful to have an overview of how to connect these devices with ESP8266. The schematic below shows how to do it:

The connections are quite simple, the only interesting aspect is that ESP8266 uses D1 and D2 to control the LEDs.

Let us start the discovering process again:

Now we can use these commands with Alexa:

Alexa, turn on the ring:

If you want to turn on the strip led, then the command to use is:

Alexa, turn on the strip:

The picture below shows both devices turned on or off:

In the picture below, all the LEDs strips are turned on:

As you have seen, it is very simple to use ESP8266 or ESP32 with Alexa. There are more interesting projects you can build:

Summary

This post described how to integrate ESP32 with Alexa using Amazon Echo. Using them, it is possible to control some LEDs using voice commands. The project demonstrated how easy it is building a smart home project based on ESP8266, Alexa and Amazon Echo.

#include <ESP8266WiFi.h&gt;
#include <ESPAsyncTCP.h&gt;
#include <fauxmoESP.h&gt;

fauxmoESP fauxmo;

void setup() { 
  Serial.begin(115200);
  
  if (connectWifi()) {
    // Setup fauxmo
     Serial.println("Adding LED device");
     fauxmo.setPort(80);  
     fauxmo.enable(true);
     fauxmo.addDevice("Led");   
  }
}

void loop() {
  fauxmo.handle();
}

boolean connectWifi() {
  // Let us connect to WiFi
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println(".......");
  Serial.println("WiFi Connected....IP Address:");
  Serial.println(WiFi.localIP());

  return true;
}

#include <Adafruit_NeoPixel.h&gt;

#define PIN D2
#define PIN_STRIP D1
#define NUM_LEDS 12
#define NUM_LEDS_STRIP 8

// LEDS
Adafruit_NeoPixel pixelsRing(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel pixelsStrip(NUM_LEDS_STRIP, PIN_STRIP, NEO_GRB + NEO_KHZ800);

void setup() { 
  Serial.begin(115200);
  pixelsRing.setBrightness(200);
  pixelsRing.begin();
  pixelsStrip.begin();
  ...
}

void turnOffRing() {
  pixelsRing.fill();
  pixelsRing.show();
}


void turnOffStrip() {
  pixelsStrip.fill();
  pixelsStrip.show();
}

void setRingColor(int r, int g, int b) {
  for (int i=0; i < NUM_LEDS; i++)
    pixelsRing.setPixelColor(i, pixelsRing.Color(r,g,b));

  pixelsRing.show();
}

void setStripColor(int r, int g, int b) {
  pixelsStrip.fill(pixelsStrip.Color(r,g,b));
  pixelsStrip.show();
}

fauxmo.onSetState([](unsigned char device_id, const char * device_name, 
                     bool state, unsigned char value) {
       Serial.print("Device name:");
       Serial.println(device_name);
       if (strcmp(device_name, "Ring") == 0) {
          Serial.print("Ring status:");
          Serial.print(state);
          Serial.println("");
          // Set RGB Color
          if (state)
             setRingColor(10,100,40);
          else
             turnOffRing();         
       }
       else if (strcmp(device_name, "Strip") == 0) {
         Serial.print("Strip status:");
          Serial.print(state);
          Serial.println("");
          // Set RGB Color
          if (state)
             setStripColor(180,30,40);
          else
             turnOffStrip();                 
       }
     });
   }

Smart Home: ESP8266/ESP32 with Alexa and Amazon Echo

Things used in this project

Hardware components

Story

Libraries

Registering a device:

Now, we are able to send commands to Amazon Echo:

How to use Amazon Alexa, ESP32 and Amazon Echo to control LEDs

ESP8266 schematic

Summary

Code

Code snippet #1

Code snippet #2

Code snippet #4

Code snippet #6

Bitbucket

Github

Github

Github

Credits

Comments

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Smart Home: ESP8266/ESP32 with Alexa and Amazon Echo

Smart Home: ESP8266/ESP32 with Alexa and Amazon Echo

Things used in this project

Hardware components

Story

Libraries

Registering a device:

Now, we are able to send commands to Amazon Echo:

How to use Amazon Alexa, ESP32 and Amazon Echo to control LEDs

ESP8266 schematic

Summary

Code

Code snippet #1

Code snippet #2

Code snippet #4

Code snippet #6

Bitbucket

Github

Github

Github

Credits

Comments

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