For some reason I thought the ESP8266 could be powered via its +5V pin.
When you try to use the 5V pin, you will notice that although some things do work, you will never see the WiFi get to life and you might find yourself searching for a mistake (which can happen easily as during flashing you probably used the micro USB and then it all did work....)
The solution is quite simple: Power the ESP8266 from the micro USB. I remember reading this somewhere else as well, but I thought to post it here for others.
For some reason I thought the ESP8266 could be powered via its +5V pin. When you try to use the 5V pin, you will notice that although some things do work, you will never see the WiFi get to life and you might find yourself searching for a mistake (which can happen easily as during flashing you probably used the micro USB and then it all did work....) The solution is quite simple: Power the ESP8266 from the micro USB. I remember reading this somewhere else as well, but I thought to post it here for others.