Alexa Echo + ESP8266 = Smart Power Plug

Flash New Frimware

1. Unplug ESP8266 from module

2. Connect module to USB to Uart module

BEFORE FLASH, PRESS BUTTON TO RESET (IO0 always connects to GND -> ESP8266 go to flash mode after reset)

3. Flash my firmware

• Download my sketch:https://github.com/kim7tin/ESP8266-Smart-Power-Plu...

• Open in Arduino IDE, and change:

• wifi_ssid: your wifi name

• wifi_password: your wifi password

• control_password: your secret password

• friendlyName: your device name

• ip/gateway/subnet: ESP8266 IP static for NAT

• In Arduino IDE. Select Tool:

• Board: Node MCU 0.9 ()

• Upload Speed: 230400

• Port: Select your USB to Uart port

• Hit Upload icon (before hit, press reset button in step 2)

4. Connect ESP to module again

Config NAT & DDNS

We need open port (default 666) to direct control from Amazon server to our ESP8266.

I just illustrated with my router. You can find out how to open your router port on the internet and open TCP port 666 to the configured IP in step 2: https://m.wikihow.com/Open-Ports

If you do not have a fixed IP, you must use a dynamic domain name. You can find many free DDNS service providers.

Control by ALEXA ECHO

1. Enable my skill named "ESP8266 Smart Power Plug"

• Alexa app > Select menu > Skill

• Search Skill named "ESP8266 Smart Power Plug"

• Click to Skill

• Click ENABLE

• Login with your Static IP or DDNS domains (include your port - default 666)

2. Discover device

• Alexa app > Select menu > SmartHome

• Click Add device and wait 20 seconds

• Now you can see ESP8266

3. Control:

"Alexa, turn on/off <your ESP named in step 2>"