How to solve issue with esp8266 connected to arduino uno? - Installation & Troubleshooting - Arduino Forum
1. Getting started with Blynk and Arduino. Switch the lights ON over the Internet - YouTube
ESP8266 IoT Wifi Button - Home Automation - openHAB Community
UNO R3 + WIFI ESP8266 + CH340G Arduino and WIFI single board - Hackster.io
Smart Wechselschalter mit ESP8266, ioBroker und MQTT
GitHub - garthvh/esp8266button: An IoT Dash Like Button using an esp8266, a push button and GitHub Actions. Tested on an Adafruit Huzzah, SparkFun Thing, and Wemos D1 Mini