I just saw your CCCS talk from rc3 and noticed that you are using an ESP8266.
A common problem that may occur when using Wifi.begin is that it can wear out the flash if called every once in a while (e.g. when the device is reset regularly).
Therefore it is useful to disable the persistent storage of the Wifi credentials.
Hi @alfkoehn,
I just saw your CCCS talk from rc3 and noticed that you are using an ESP8266.
A common problem that may occur when using Wifi.begin is that it can wear out the flash if called every once in a while (e.g. when the device is reset regularly).
Therefore it is useful to disable the persistent storage of the Wifi credentials.
For more details see: https://github.com/esp8266/Arduino/issues/1054