ESP8266 Community Forum

Hi, I am complete begginer with this kind of IOT stuff. I found spare NodeMCU with ESP8266, I tried to copy various projects {using ESP8266.h libraries for example) code to arduino IDE, it succesfully flashed the device, but after reset I dont see any wifi network which should be created by the NodeMCU...whatever project I tried, all works (LED blinking etc) but I dont see any newly created Wifi AP...can anybody help what I am doing wrong with the Wifi?...I tried replacing the device to new one, I tried to flash its firmware with some standard, and custom build, etc...but no luck.Thanks.
One of the projects : https://www.instructables.com/Getting-S ... -V3Flashi/