ESP8266 / ESP32 can be easily used as Web server. Also, ESP device can connect to internet via Wi-Fi, or itself can be used as Access Point. Some usage are, connect to ESP device from Smartphone, open web page, configure setting or control peripheral device. E.g. ESP as smart plug controller, configure on/off scheduling time, or ESP as remote-controlled robot with servo and motor, and control using browser interface. One annoying thing when using ESP as access point / web server is, after connecting to ESP device from Smartphone, I have to open browser and type in IP address in URL and open page. Well, this can be automated using …