05 - Wi-Fi Setup The dimmer code uses the Wifi autoconnect library at the 1st firmware upload, it will create a "dimmer" wifionce the user is connected to this Wifi, the browser will redirect to the page http://192.168.4.1 to ask you to configure your Wifi it will memorize your Wi-Fi connection confirmations even after a firmware update. For more details: https://www.raspberryme.com/wifimanager-avec-esp8266-connexion-automatique-parametre-personnalise-et-gestion-de-votre-ssid-et-mot-de-passe/