hello fernando,
I bought the nodemcu and I did the installation as you showed.
But even in this I do not have a stable connection.
from the pages of the esp-ling wading the debugging voice I have the message that you report below.
It seems like the same problem I had with the network cable.
conn 0x3fff7988
48920> MQTT: Disconnected from ferduino.com:1883
48921> MQTT Client: Disconnected
49602> MQTT: Connect to ferduino.com:1883 0x3fff7988 (client=0x3fff63e0)
49638> MQTT: ip 104.131.49.99
49639> MQTT: connecting...
49775> MQTT: TCP connected to ferduino.com:1883
49776> MQTT: Send type=TYPE_CONNECT id=0000 len=51
49921> MQTT: Recv type=CONNACK id=0000 len=4; Pend type=NULL id=00
49921> MQTT Client: Connected
49922> MQTT: Disconnect CB, freeing espconn 0x3fff7988
49922> MQTT: Disconnected from ferduino.com:1883
49922> MQTT Client: Disconnected
50602> MQTT: Connect to ferduino.com:1883 0x3fff7988 (client=0x3fff63e0)
50638> MQTT: ip 104.131.49.99
50639> MQTT: connecting...
50764> MQTT: TCP connected to ferduino.com:1883
50764> MQTT: Send type=TYPE_CONNECT id=0000 len=51
50894> MQTT: Recv type=CONNACK id=0000 len=4; Pend type=NULL id=00
50894> MQTT Client: Connected
50895> MQTT: Disconnect CB, freeing espconn 0x3fff7988
50895> MQTT: Disconnected from ferduino.com:1883
50895> MQTT Client: Disconnected
51602> MQTT: Connect to ferduino.com:1883 0x3fff7988 (client=0x3fff63e0)
51641> MQTT: ip 104.131.49.99
51642> MQTT: connecting...
51755> MQTT: TCP connected to ferduino.com:1883
51755> MQTT: Send type=TYPE_CONNECT id=0000 len=51
51777> HTTP GET /menu: 200, 45ms, h=13632
51792> HTTP GET /log/dbg: 200, 58ms, h=14736