You are going to learn how to give voice commands to Alexa in order to control an ESP8266 or an ESP32 device with the help of this project (Amazon Echo Dot). We'll demonstrate how to control relays by manipulating two 12V lamps that are connected to a relay module. In addition to this, we will install two 433 MHz RF wall panel switches so that the lamps can be physically controlled. Note: this tutorial is compatible with all Echo Dot generations and with the latest fauxmoESP library (3.1.0). It is compatible with both the ESP32 and the ESP8266.

This project is compatible with the ESP8266 as well as the ESP32. Instructions are provided by us for both of the development boards. Read the rest of this section first so that you have an idea of what you will have accomplished by the time you are finished with this project. Alexa can be used to control the Lamps.

When you are finished with this project, you will be able to use voice commands to control two lamps (lamp 1 and lamp 2) that are controlled by Alexa. The diagram that follows provides a high-level overview of how the project operates to control lamp 1; it operates in a comparable manner for lamp 2.

"Alexa, turn on lamp 1" "Alexa, switch off the first lamp." "Alexa, turn on lamp 2" "Alexa, turn on lamp 2" When you tell Alexa to "turn on lamps," she turns on both of them. When you tell Alexa to turn off the lamps, both of them turn off. A relay will be triggered by the ESP8266 or ESP32 whenever you say something like, "Alexa, turn on lamp 1." This will cause lamp 1 to turn on. When you tell Alexa to do something like "turn off lamp 1," either the

ESP8266 or the ESP32 will send a signal to the relay, which will cause the lamp to turn off. Lamp 2 operates in a manner analogous to this. Wall Switches Operating at 433 MHz Used to Regulate Lamps As part of this project, we will also install two wall switches that operate at 433 MHz in order to physically control the lamps. Each lamp will have its own separate switch. The state of the lamp is altered by the switch so that it becomes the opposite of what it was previously. For instance, if the lamp is turned off, you can turn it on by pressing the wall switch. Simply pressing the switch once more will cause it to be turned off. Take a look at the diagram that is provided below; it shows how the process works.

This is a comprehensive list of all of the components that are needed for this project. ESP Board (you have the option of using either an ESP32 or an

ESP8266: for more information, see the article titled Best ESP8266 Wi-Fi Development Boards ESP32, for which we make use of the ESP32 DOIT DEVKIT V1 Board, which has a total of 36 GPIOs (read ESP32 development boards comparison) Alexa, available on the Echo, Echo Show, and Echo Dot (read the next section for more details) RF Wall Panel Switch 433 MHz 433 MHz Transmitter and Receiver 12V 2A Power Adaptor buck converter with a step-down transformer Relay module 12V lamp 12V lamp holder Male DC barrel jack 2.1mm Stripboard or breadboard A set of jumper wires

RF Wall Panel Switch Operating at 433 MHz A fantastic tool for exercising remote control over electronic devices is the 433 MHz RF wall panel switch. It is possible to quickly and easily attach it to a wall using adhesive tape, eliminating the need to drill holes in the walls. In addition to this, it is wireless, which means that you do not have to worry about wiring it or hiding the cables afterwards. We are making use of two wall panel switches for this particular project. You could, alternatively, use a panel switch that has two buttons; there is also another version of this switch that has three buttons. As can be seen in the illustration to the right, this wall panel switch's circuit includes a push button that, when pressed, sends out a signal at a frequency of 433 MHz. You are free to control whatever you like with the help of that signal. The battery that powers this wall panel switch is a 27A 12V type (not included in the package). As a result, you should probably get one when you get the switch for the wall panel. Decode the Wall Panel Switch 433 MHz RF Signals A signal at 433 MHz is transmitted whenever the switch on the 433 MHz wall panel is pressed. You will need to make use of a 433 MHz receiver in order to decode that signal. Read the following post to acquire the knowledge necessary to decode the 433 MHz signal: Read the "Decoder Sketch" section to learn how to use Arduino to decode and send RF signals at 433 MHz. This sketch can be run on Arduino as well as ESP32 and ESP8266. It is important to make a note of the decimal (24-bit) code for each of your switches, as you will require it at a later time.

6819768 on switch 1; 9463928 on switch 2 You should get different values. After that, you will implement these signals into the sketch for your ESP8266 or ESP32. When the switch is pressed, it will send a signal at a frequency of 433 MHz. The receiver that is linked to the ESP is able to pick up on the presence of this signal. Because of this, the ESP is aware that the switch was pressed, and it adjusts the state of the lamp accordingly. The FauxmoESP You will need to have the FauxmoESP library installed in order to control your ESP8266 or ESP32 with Amazon Echo. By using this library, which simulates a Belkin Wemo device, you will be able to control your ESP32 or ESP8266 using the protocol developed by Belkin. After the code has been uploaded, the Echo or Echo Dot will be able to instantly recognize the device without the need for any additional expertise or services from a third party. Download the FauxmoESP library, click, Within your Downloads folder, you ought to have a.zip folder. After unzipping the.zip folder, you should find the xoseperez- fauxmoesp-50cbcf3087fd folder in the directory that you just created.

Rename your folder from xoseperez-fauxmoesp-50cbcf3087fd to xoseperez fauxmoesp Transfer the xoseperez fauxmoesp folder to the libraries folder that was created during the installation of your Arduino IDE. Finally, reopen the Arduino integrated development environment (IDE) for the Alexa–Echo Dot with ESP8266. If you are utilizing an ESP8266, proceed with the following instructions. Installing the ESP8266 Board in Arduino IDE Installing an add-on for the Arduino IDE that enables you to program the ESP8266 using the Arduino IDE and its programming language is required before you can use the Arduino IDE to upload code to your ESP8266 device. The add-on can be found on the Arduino website. If you haven't already, you should download and install the ESP8266 extension for the Arduino IDE.

Installing the ESPAsyncTCP Library 1. In addition to that, the ESPAsyncTCP Library library needs to be installed. To install it, just make sure to follow these instructions: 2. To download the ESPAsyncTCP library, click on the link provided. Within your Downloads folder, you ought to have a.zip folder. 3. After unzipping the.zip folder, you should see a folder labeled ESPAsyncTCP-master. 4. Change the name of your folder to ESPAsyncTCP instead of ESPAsyncTCP-master.

5. Place the ESPAsyncTCP folder inside the libraries folder that was installed with your Arduino IDE. 6. Finally, reopen the schematic file in your Arduino IDE.

If you are putting together your circuit using an ESP8266 board, the following schematic diagram should be followed. You can click the image to see it in greater detail. The information in the following table can serve as a reference for you if you're having trouble understanding the circuit diagram

As a demonstration of our work, we have constructed our circuit on a prototyping stripboard and attached all of the components to a wooden

Now you can ask Alexa to control your lamps with the following voice

"Alexa, turn on lamp 1" "Alexa, switch off the first lamp." "Alexa, turn on lamp 2" "Alexa, turn on lamp 2"

If you create a group in the Amazon Alexa app, you will also have the ability to control both lamps at the same time. We referred to them as "lamps." You are now capable of controlling both lamps at the same time using the voice commands that are listed below. "Alexa, turn on lamps" "Alexa, switch off the lights." The wall panel switches that use the 433 MHz frequency can also be used to physically control your lamps. In this project, we demonstrated how to use voice commands to control both your ESP8266 and your ESP32 devices using Amazon Echo. As an illustration, we have utilized a relay in order to control two 12V lamps. You are not limited to just controlling 12V lamps; you can do so with any other electronic appliance. We have also demonstrated how you can utilize a 433 MHz wall panel switch to exercise remote control over your lighting fixtures.