ESP8266 Community Forum

- Wed Mar 15, 2017 6:56 am #63722 I don't have a solution to your main problem, but I do notice an error near the end.

Code: Select all  Udp.write(replyPacekt);
    Udp.endPacket();

should be

Code: Select all  Udp.write(replyPacket);
    Udp.endPacket();

[the spelling of "replyPacket" has been fixed]

As for the original problem, it's almost certainly a case of some missing library --- but someone more expert with the system than I am can help you with that, I'll bet.

- Wed Mar 15, 2017 8:39 am #63728 It is not "ESP6266wifi.h" but "ESP6266WiFi.h", case sensitive.