You might want to try
EDIT: I did a search for mqtt inside the itoo thread, you might want to take a look at these posts here Search results for 'Mqtt' - MIT App Inventor Community
Taifun
You might want to try
EDIT: I did a search for mqtt inside the itoo thread, you might want to take a look at these posts here Search results for 'Mqtt' - MIT App Inventor Community
Taifun