@oldguydave IP addresses for WiFi are by default assigned with DHCP so if you have that on your network each LoPy will get it’s own IP address.

@stroggo thanks, i am able to connect my LoPy with the WiFi, i am thinking how to make it communicate with my computer in the same WiFi environment.

@150716t simpy connect to it by ftp and put file look here https://docs.pycom.io/chapter/toolsandfeatures/FTP.html

@mkbenon You're welcome, I just gave you some hints, glad that you manage yourself (best learning method). :o) Also please note that MQTT example script changes WLAN antenna mode for external (WLAN.EXT_ANT). If your LoPy setup has the external antenna - that's OK, but if not you should use default internal antenna (WLAN.INT_ANT).