ESP32 voice control via Amazon Echo Dot (Alexa)

This is an awesome application that using Amazon Echo Dot to turn on/off the blue LED on DOIT ESP32 dev-board via voice control service. You can find the source code, named alexa_esp32, within the examples directory.

When you build the alexa_esp32 within the examples folder and flash the firmware to ESP32 board, then you can ask Echo Dot to discover device by telling her "Alexa, discover device". She will answer you "Discovery starting...". After about 20 seconds, if She does find device, she will answer you "I found 1 device...". Plus, you can search device via Alexa App or via this page: alexa.amazon.com. When Echo Dot find ESP32, you will see the found device named "esp" on alexa.amazon.com, show as the following figure:

When Alexa find ESP32 device successfully, you can ask Echo Dot "Alexa, turn on ESP" to turn on the blue LED on ESP32 borad. Ask "Alexa, turn off ESP" to turn off the LED. The following link is a video to show the ESP32 voice control via Amazon Echo Dot: https://youtu.be/Eg1dApUHIBc

Download source

This app is a part of LuaNode, you can download source code here: https://github.com/Nicholas3388/LuaNode/tree/master/LuaNode_Esp32/LuaNode32/examples/alexa_esp32

If you want use Alexa to control more resource on ESP32 device, to control more than two ESP32, see this example on the following link: https://github.com/Nicholas3388/LuaNode/tree/master/LuaNode_Esp32/LuaNode32/examples/alexa_multi_esp32

How to build

export your esp-idf path first, input export IDF_PATH=/your_idf_path on terminal. Then input make to build this project.

How to config

• The Amazon Echo Dot will find the ESP32 device as esp, the name will show on Alexa server. You can change the name by changing the string named device_name in alexa.c
• Config Wifi SSID and Password in user_config.h
• Macro GPIO_TEST is the pin for the blue LED