Hi! I have very recently bought an amazon echo plus (gen. 2). I've just tried it with a Wemos D1 mini and it doesn't work.
The code compilled and uploaded fine.
When I run discover devices from echo it doen't find any and the serial output of the wemos shows:
`Switch 1 turn off ...
Turning off relay
Connecting to WiFi
Connecting ..........
Connected to ciscosb23211
IP address: 10.185.9.121
Begin multicast ..
Udp multicast server started at 239.255.255.250:1900
WebServer started on port:
80
Adding switches upnp broadcast responder
Adding switch : smart plug index : 0
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 34798
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 34798
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 44288
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 44288
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 41134
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 41134
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.1
Port : 1900
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 38899
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 38899
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 55662
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 55662
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 40928
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 40928
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 60109
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 60109
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 52593
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 52593
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 52593
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 52593
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.1
Port : 1900
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 58120
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 58120
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 45608
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 45608
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 40793
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 40793
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 54763
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 54763
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 36094
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 36094
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.120
Port : 50000
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.1
Port : 1900
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 51957
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 51957
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 60883
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 60883
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 55873
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 55873
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 44691
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 44691
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 44691
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.109
Port : 44691
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 58027
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.106
Port : 58027
Response sent !
Got UDP Belkin Request..
Sending response to 10.185.9.112
Port : 1024
Response sent !
`
Amazon echo is 10.185.9.120
wemos is 10.185.9.121
and the others are devices like camera, 3d printing server etc...