@brossingo what was the output if the program when you ran it? Checking the return value of client.connect() might yield useful information.

D not forget LoRa as an option if it is a LoPy 4 device.

@manuelc1318 as I wrote, you can transmit data in both directions: write to a characteristic to send data from client to server, and either read from a characteristic or use notifications for data from server to client.

@letsgo If you have a home router & access point, the easiest is to have both LoPys connected to that. For that, follow the instructions at https://docs.pycom.io/chapter/tutorials/all/wlan.html, section: Connecting to a router. if you want to connect them directly, one of them has to run as access point (AP), the other as station (STA). Since the devices run as AP by default, you just have to reconfigure one of them the way, told above.

@jmarcelino said in Sigfox RC4 Freezing after 1 msg: time.sleep(20) Works like a charm. Thanks a lot. The documentation is a bit misguiding here, it says : "there must a minimum of a 20s delay after resetting to the default macro-channel. Our API takes care of this [...] for i in range(1, 100): # send something s.send('Hello ' + str(i)) There will be a 20 second delay after every 2 packets" In fact, there should be a delay added between 2 packets. Maybe a suggestion for modification of the doc. Anyway, thanks a lot for correcting me ! All the best.

@jcaron Thanks a lot , limiting the channels to 0-8 and 64 ( for join/accept) did the trick for now.

@livius Regards first question: i used the code here: https://docs.pycom.io/chapter/firmwareapi/pycom/network/lte/cat-m1.html... But I did not have any results...The country is Italy and I have the tim sim.. BR