IOT – Google, Amazon Alexa, Signal Jammer, ESP 8266 NodeMCU and Location Tracker etc..,: New model technology development - Kindle edition by k, Anbazhagan, k, Ambika parameswari. Children Kindle eBooks @ Amazon.com.
Smart Home tutorial: ESP8266, Alexa and Amazon Echo
Alexa Home Automation System Using NodeMCU & Relay Module - Hackster.io
Alexa (Echo) with ESP32 and ESP8266 | Random Nerd Tutorials
Alexa (Echo) with ESP32 and ESP8266 | Random Nerd Tutorials