while True: rx = s.recv(64) time.sleep_ms(10) if rx: time.sleep_ms(10) rxStr = str(rx).split("'") index = int(rxStr[1]) try: i2c.writeto(56, 255-index) except Exception as error: print("i2c",error) startTime = time.ticks_ms() s.setblocking(True) time.sleep_ms(10) try: s.send("ack") except Exception as error: print("send ",error) time.sleep_ms(10) s.setblocking(False) print(time.ticks_ms()-startTime) wdt.feed() @jcaron thanks for your response. The problem is in the s.send(). I added the setblocking() statements around the statement along with putting it in its own try/except but they are still resetting at least 12-16 times a day. Is there any thing else you think I should check? Gateway setting? I'm using a Multitech Conduit gateway that's running node-red. Thanks again

hi @smbunn, The code was not modified. On a second thought, the altitude is just a simple function of the pressure, considering the same sea-level pressure. This is not ok, as the sea-level pressure varies in time, and from place to place. So, I would recommend, to use just the pressure, and if altitude is required, some arithmetics code has to be added, to get the right altitude. You could use some weather forecast service to obtain the accurate and real-time sea-level pressure.

@jmarcelino Yes, my problem is the same as what you highlight, thanks for solving the mystery. As an temp solution (for lazy ppl) I can suggest : # hard reset if last was a soft reset if reset_cause() == 4: reset() if not 'sigfox' in locals(): sigfox = Sigfox(mode=Sigfox.SIGFOX, rcz=Sigfox.RCZ4) Regarding the UART1 activity causing Sigfox instability, I will do more tests later. Maybe update the SiPy pinout PDF to include the UART1 pins (like LoPy) as @livius mentioned?