LoRaWAN: Stops reporting (receiving?) LoRaWAN packets. Needs reboot

[UBWH]

PROBLEM DESCRIPTION

Hardware: LilyGo T3S3- 915 MHz
Tasmota: tasmota32s3, Version: 15.0.1.2
Connected sensor: Dragino DDS75-LS

Have been long term testing and after an undefined time (1-month, 1-week, 2-weeks, ...) Tasmota stops reporting the LoRaWAN data. Has happened 3 times in about 3 months.

• Tasmota does NOT crash.
  • Keeps reporting tele/xxxxx/STATE as normal
  • GUI, Console, etc all running
  • No reported BERRY console errors

.. but the tele/xxxx/SENSOR messages just stop.

Issuing RESTART 1 fixes the problem.

What is known:

• The Remote LoRaWANsensor did not need a restart ... so it never stopped sending LoRaWAN messages
• Tasmota never stopped

Guess:

• The LoRa SX1276 module on the Lilygo board somehow stopped working, or got confused, or lost communication with Tasmota.

REQUESTED INFORMATION

Make sure your have performed every step and checked the applicable boxes before submitting your issue. Thank you!

• Read the Contributing Guide and Policy and the Code of Conduct
• Searched the problem in issues
• Searched the problem in discussions
• Searched the problem in the docs
• Searched the problem in the chat
• Problem is not scripter related, in this case open a discussion and tag gemu2015
• Device used (e.g., Sonoff Basic): _LilyGo T3S3
• Tasmota binary firmware version number used: ___15.0.1.2
  • Pre-compiled
  • Self-compiled
• Flashing tools used: _Online
• Provide the output of command: Backlog Template; Module; GPIO 255:

 {"NAME":"LWG-T3S3","GPIO":[32,1,1,672,1,736,704,10656,10688,1,1,1,1,1,1,1,1,608,640,1,1,1,10784,10720,1,1,0,1,1,0,1,0,6210,1,1,1,1,0],"FLAG":0,"BASE":1}

{"Module":{"0":"LWG-T3S3"}}

{"GPIO0":{"Button1":32},"GPIO1":{"None":0},"GPIO2":{"None":0},"GPIO3":{"SPI MISO1":672},"GPIO4":{"None":0},"GPIO5":{"SPI CLK1":736},"GPIO6":{"SPI MOSI1":704},"GPIO7":{"LoRa CS":10656},"GPIO8":{"LoRa Rst":10688},"GPIO9":{"None":0},"GPIO10":{"None":0},"GPIO11":{"None":0},"GPIO12":{"None":0},"GPIO13":{"None":0},"GPIO14":{"None":0},"GPIO15":{"None":0},"GPIO16":{"None":0},"GPIO17":{"I2C SCL1":608},"GPIO18":{"I2C SDA1":640},"GPIO19":{"None":0},"GPIO20":{"None":0},"GPIO21":{"None":0},"GPIO33":{"LoRa DIO1":10784},"GPIO34":{"LoRa Busy":10720},"GPIO35":{"None":0},"GPIO36":{"None":0},"GPIO37":{"None":0},"GPIO38":{"None":0},"GPIO39":{"None":0},"GPIO40":{"None":0},"GPIO41":{"None":0},"GPIO42":{"None":0},"GPIO43":{"Option A3":6210},"GPIO44":{"None":0},"GPIO45":{"None":0},"GPIO46":{"None":0},"GPIO47":{"None":0},"GPIO48":{"None":0}}

• If using rules, provide the output of this command: Backlog Rule1; Rule2; Rule3:

No rules

• Provide the output of this command: Status 0:

{"Status":{"Module":0,"DeviceName":"Tasmota","FriendlyName":["Tasmota"],"Topic":"LWG-T3S3_09E250","ButtonTopic":"0","Power":"1","PowerLock":"0","PowerOnState":3,"LedState":1,"LedMask":"FFFF","SaveData":1,"SaveState":1,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0,"InfoRetain":0,"StateRetain":0,"StatusRetain":0}}
{"StatusPRM":{"Baudrate":115200,"SerialConfig":"8N1","GroupTopic":"tasmotas","OtaUrl":"http://ota.tasmota.com/tasmota32/release/tasmota32s3.bin","RestartReason":"Software reset CPU","Uptime":"0T02:31:01","StartupUTC":"2026-01-20T00:56:30","Sleep":50,"CfgHolder":4617,"BootCount":37,"BCResetTime":"2025-11-15T07:14:12","SaveCount":74}}
{"StatusFWR":{"Version":"15.0.1.2(tasmota32)","BuildDateTime":"2025-07-30T17:54:54","Core":"3_1_3","SDK":"5.3.3.250702","CpuFrequency":240,"Hardware":"ESP32-S3 v0.2","CR":"441/699"}}
{"StatusLOG":{"SerialLog":2,"WebLog":4,"MqttLog":0,"FileLog":0,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["WiFi-20E8",""],"TelePeriod":300,"Resolution":"558180C0","SetOption":["00008009","2805C80001000600003C5A0A192800000000","00000080","00006080","00004000","00000000"]}}
{"StatusMEM":{"ProgramSize":2073,"Free":806,"Heap":241,"StackLowMark":3,"PsrMax":2048,"PsrFree":1996,"ProgramFlashSize":4096,"FlashSize":4096,"FlashChipId":"164020","FlashFrequency":80,"FlashMode":"QIO","Features":["0809","9FBAD7DF","0015A2A1","B7F7BFCF","05DA9BC4","E0360DC7","480840F2","20200000","D4BC482D","810A80F1","00000814"],"Drivers":"1,2,!3,!4,!5,7,!8,9,10,11,12,13,!14,!16,!17,!20,!21,!24,26,!27,29,!34,!35,38,50,52,!59,!60,62,!63,!66,!67,!68,73,!75,82,!86,!87,!88,!91,!121","Sensors":"1,2,3,5,6,7,8,9,10,11,12,13,14,15,17,18,19,20,21,22,26,31,34,37,39,40,42,43,45,51,52,55,56,58,59,64,66,67,74,85,92,95,98,103,105,109,127","I2CDriver":"3,5,7,8,9,10,11,12,13,14,15,17,18,20,24,29,31,36,41,42,44,46,47,48,58,62,65,69,76,77,82,89"}}
{"StatusNET":{"Hostname":"LWG-T3S3-09E250-0592","IPAddress":"192.168.1.104","Gateway":"192.168.1.1","Subnetmask":"255.255.255.0","DNSServer1":"192.168.1.1","DNSServer2":"0.0.0.0","Mac":"D0:CF:13:09:E2:50","IP6Global":"","IP6Local":"fe80::d2cf:13ff:fe09:e250%st1","Ethernet":{"Hostname":"","IPAddress":"0.0.0.0","Gateway":"0.0.0.0","Subnetmask":"0.0.0.0","DNSServer1":"192.168.1.1","DNSServer2":"0.0.0.0","Mac":"00:00:00:00:00:00","IP6Global":"","IP6Local":""},"Webserver":2,"HTTP_API":1,"WifiConfig":4,"WifiPower":19.0}}
{"StatusMQT":{"MqttHost":"<redacted>","MqttPort":8888,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_09E250","MqttUser":"ha-mqtt","MqttCount":1,"MqttTLS":0,"MAX_PACKET_SIZE":1200,"KEEPALIVE":30,"SOCKET_TIMEOUT":4}}
{"StatusTIM":{"UTC":"2026-01-20T03:27:31Z","Local":"2026-01-20T04:27:31","StartDST":"2026-03-29T02:00:00","EndDST":"2026-10-25T03:00:00","Timezone":"+01:00","Sunrise":"08:34","Sunset":"17:27"}}
{"StatusSNS":{"Time":"2026-01-20T04:27:31"}}

• Set weblog to 4 and then, when you experience your issue, provide the output of the Console log:

No relevant messages

TO REPRODUCE

Have all running ... and wait for up to 1 month :-(

EXPECTED BEHAVIOUR

LoRaWAN messages don't stop

SCREENSHOTS

If applicable, add screenshots to help explain your problem.

ADDITIONAL CONTEXT

We know that a RESTART 1 fixed the issue. I am guessing it is not Tasmota that needed a restart; more likely the SX1276 module (or the driver that Tasmota uses to communicate with the SX1276?)

OPTION 1 (not nice)
RESTART 1 daily. Loose too much data if the 'hang' happens early in the 24 hrs, plus if no problem, then loose data while LoRaWAN device re-joins after the restart.

OPTION 2
Restart just the SX1276 regularly ? (how often?) (Do LoRaWAN devices have to re-join?)

OPTION 3
Restart the SX1276 only if no new packets received in (??) 30 minutes???

OPTION 4
Open to suggestions

(Please, remember to close the issue when the problem has been addressed)

[sfromis]

While this is not a solution of the deeper cause, you could have a "watchdog" logic to do a restart if not getting data. As you say that "tele/xxxx/SENSOR messages just stop", a simple logic could be to have a timer with a longer expiry than the telemetry period. When the timer completes, do a restart. When you get a message, reset the timer. That should ensure quick detection, as long as the Tasmota device continues to run normally.

BTW. You have a "confusing" typo under your "additional context", actually doing a Reset 1 would be way harsher than what I suppose that you meant, doing a Restart 1 😉

[UBWH]

@sfromis:
You are correct. I meant RESTART 1. Edited issue to correct.

Your logic is like my Option 1. But that is the least-best option as a lot of data can be lost while the LoRaWAN remote device has to re-join and that can take up to an hour (in my case, AU915)

I am hoping someone with more knowledge than me can advise how the restart just the SX1276 (Option 3)

Rob

[arendst]

Pls provide some logging with log option 4 when all is well. Do you use berry decoding or internal driver decoding?

Try to log to syslog server to find out what happens around the time you expect a message from DDS75-LS

[UBWH]

Logging is a problem for this install. It is at a site 1hr drive. And not remote console access (I used MQTT /cmnd/xxx/RESTART 1 to remotely restart the device)

I will have to setup a 2nd identical installation locally .. then I can get what you need. :-)

[arendst]

Do you see any response when you enable MQTT logging with command /cmnd/xxx/mqttlog 4?

[UBWH]

Yes - I can see LOGGING MQTT messages after I issue /cmnd/xxx/mqttlog 4 :-)

11:26:37.390 LOR: Rcvd (34210699) '4050E2090080690002E599307C9815E3F8D831DDCE', Freq 915.200, BW 125.0, SF 10, RSSI -78.0, SNR 8.0
11:26:37.402 MQT: tele/LWG-T3S3_09E250/SENSOR/A8404149F35C4EA0 = {"LwDecoded":{"DDS75L":{"Distance":528,"RSSI":-78,"Node":1,"BattV":3.996,"Device":"Dragino DDS75-LB/LS"}}}
11:26:38.687 CFG: Lora saved to file

11:28:16.525 BRY: GC from 24207 to 19817 bytes, objects freed 59/273 (in 2 ms) - slots from 345/441 to 230/441

11:28:16.531 MQT: tele/LWG-T3S3_09E250/STATE = {"Time":"2026-01-20T11:28:16","Uptime":"0T09:31:46","UptimeSec":34306,"Heap":241,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":66,"MqttCount":2,"Berry":{"HeapUsed":19,"Objects":273},"POWER":"ON","Wifi":{"AP":1,"SSId":"WiFi-20E8","BSSId":"D8:47:32:91:20:E8","Channel":9,"Mode":"HE20","RSSI":100,"Signal":-22,"LinkCount":1,"Downtime":"0T00:00:03"}}

[UBWH]

Easier to get what you need from my office setup.

Give me a few hrs

[sfromis]

No, my logic is far from your option 1, as it is not at a fixed interval like daily. It is more like your option 3, but with specifics for how it could work to do controlled restart of Tasmota. Assuming default telemetry period of 5 minutes, and the "/SENSOR" payloads are going away from that (which I take your description to mean), this should ensure restart in less than 10 minutes.

Of course, if your situation is different from how I read it - well, then you lack details. More broadly, if you expect data at a certain frequency, you "know" that something is wrong if not getting that, and can set up an automation to "do something" right away.

[arendst]

@sfromis consider this as a reasonable lorawan log:

10:33:03.279 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T10:33:03","Uptime":"0T17:20:10","UptimeSec":62410,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
10:34:20.879 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T09:33:43","Ext_SensorType":1,"RSSI":-59,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":19.92,"TempC_External":19.68,"Hum_Internal":47.2}}
10:34:22.231 CFG: Lora saved to file
10:38:03.271 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T10:38:03","Uptime":"0T17:25:10","UptimeSec":62710,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
10:43:03.292 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T10:43:03","Uptime":"0T17:30:10","UptimeSec":63010,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
10:48:03.265 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T10:48:03","Uptime":"0T17:35:10","UptimeSec":63310,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
10:53:03.299 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T10:53:03","Uptime":"0T17:40:10","UptimeSec":63610,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
10:54:20.969 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T09:53:43","Ext_SensorType":1,"RSSI":-60,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":19.93,"TempC_External":19.68,"Hum_Internal":47.2}}
10:54:21.708 CFG: Lora saved to file
10:54:46.337 MQT: tele/t3s3b/SENSOR = {"Brievenbus":{"TempC_Internal":1.8,"Exti_status":"True","Device":"Dragino LHT65","RSSI":-65,"poll_message_status":0,"Exti_pin_level":"Low","Bat_status":"Good >= 2.65V","Work_mode":"Interrupt Sensor send","Node":4,"BattV":3.005,"Hum_Internal":89.9}}
10:54:46.343 RUL: BRIEVENBUS#EXTI_STATUS=TRUE performs 'backlog dzsend1 61,1;delay 5;dzsend1 61,0'
10:54:46.344 SRC: Rule
10:54:46.344 CMD: Grp 0, Cmd 'BACKLOG', Idx 1, Len 33, Pld -99, Data 'dzsend1 61,1;delay 5;dzsend1 61,0'
10:54:46.368 SRC: Backlog
10:54:46.368 CMD: Grp 0, Cmd 'DZSEND', Idx 1, Len 4, Pld 61, Data '61,1'
10:54:46.369 MQT: domoticz/in = {"idx":61,"nvalue":0,"svalue":"1","Battery":100,"RSSI":8}
10:54:46.370 MQT: stat/t3s3b/RESULT = {"DzSend":"Done"}
10:54:46.618 SRC: Backlog
10:54:46.618 CMD: Grp 0, Cmd 'DELAY', Idx 1, Len 1, Pld 5, Data '5'
10:54:46.621 MQT: stat/t3s3b/RESULT = {"Delay":5}
10:54:47.168 SRC: Backlog
10:54:47.169 CMD: Grp 0, Cmd 'DZSEND', Idx 1, Len 4, Pld 61, Data '61,0'
10:54:47.171 MQT: domoticz/in = {"idx":61,"nvalue":0,"svalue":"0","Battery":100,"RSSI":7}
10:54:47.174 MQT: stat/t3s3b/RESULT = {"DzSend":"Done"}
10:54:48.080 CFG: Lora saved to file
10:54:49.371 MQT: tele/t3s3b/SENSOR = {"Brievenbus":{"TempC_Internal":1.82,"Exti_status":"True","Device":"Dragino LHT65","RSSI":-65,"poll_message_status":0,"Exti_pin_level":"High","Bat_status":"Good >= 2.65V","Work_mode":"Interrupt Sensor send","Node":4,"BattV":3.004,"Hum_Internal":89.9}}
10:54:49.379 RUL: BRIEVENBUS#EXTI_STATUS=TRUE performs 'backlog dzsend1 61,1;delay 5;dzsend1 61,0'
10:54:49.379 SRC: Rule
10:54:49.380 CMD: Grp 0, Cmd 'BACKLOG', Idx 1, Len 33, Pld -99, Data 'dzsend1 61,1;delay 5;dzsend1 61,0'
10:54:49.388 SRC: Backlog
10:54:49.388 CMD: Grp 0, Cmd 'DZSEND', Idx 1, Len 4, Pld 61, Data '61,1'
10:54:49.391 MQT: domoticz/in = {"idx":61,"nvalue":0,"svalue":"1","Battery":100,"RSSI":7}
10:54:49.393 MQT: stat/t3s3b/RESULT = {"DzSend":"Done"}
10:54:49.588 SRC: Backlog
10:54:49.588 CMD: Grp 0, Cmd 'DELAY', Idx 1, Len 1, Pld 5, Data '5'
10:54:49.591 MQT: stat/t3s3b/RESULT = {"Delay":5}
10:54:50.560 CFG: Lora saved to file
10:54:50.568 SRC: Backlog
10:54:50.568 CMD: Grp 0, Cmd 'DZSEND', Idx 1, Len 4, Pld 61, Data '61,0'
10:54:50.571 MQT: domoticz/in = {"idx":61,"nvalue":0,"svalue":"0","Battery":100,"RSSI":7}
10:54:50.575 MQT: stat/t3s3b/RESULT = {"DzSend":"Done"}
10:58:03.272 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T10:58:03","Uptime":"0T17:45:10","UptimeSec":63910,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:03:03.296 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:03:03","Uptime":"0T17:50:10","UptimeSec":64210,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:08:03.278 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:08:03","Uptime":"0T17:55:10","UptimeSec":64510,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:13:03.263 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:13:03","Uptime":"0T18:00:10","UptimeSec":64810,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:14:21.058 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T10:13:43","Ext_SensorType":1,"RSSI":-59,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":19.99,"TempC_External":19.68,"Hum_Internal":47.3}}
11:14:21.681 CFG: Lora saved to file
11:18:03.261 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:18:03","Uptime":"0T18:05:10","UptimeSec":65110,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:23:03.286 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:23:03","Uptime":"0T18:10:10","UptimeSec":65410,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:28:03.271 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:28:03","Uptime":"0T18:15:10","UptimeSec":65710,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:33:03.298 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:33:03","Uptime":"0T18:20:10","UptimeSec":66010,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":78,"Signal":-61,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:34:21.168 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T10:33:43","Ext_SensorType":1,"RSSI":-60,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":20.33,"TempC_External":19.93,"Hum_Internal":47.6}}
11:34:22.128 CFG: Lora saved to file
11:38:03.263 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:38:03","Uptime":"0T18:25:10","UptimeSec":66310,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:43:03.294 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:43:03","Uptime":"0T18:30:10","UptimeSec":66610,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:48:03.263 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:48:03","Uptime":"0T18:35:10","UptimeSec":66910,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:53:03.310 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:53:03","Uptime":"0T18:40:10","UptimeSec":67210,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":80,"Signal":-60,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
11:53:44.634 MQT: tele/t3s3b/SENSOR = {"Brievenbus":{"TempC_Internal":2.45,"Exti_status":"False","Device":"Dragino LHT65","RSSI":-63,"poll_message_status":0,"Exti_pin_level":"High","Bat_status":"Good >= 2.65V","Work_mode":"Interrupt Sensor send","Node":4,"BattV":3.005,"Hum_Internal":89.5}}
11:53:45.528 CFG: Lora saved to file
11:54:21.239 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T10:53:43","Ext_SensorType":1,"RSSI":-59,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":20.42,"TempC_External":20.06,"Hum_Internal":47.2}}
11:54:22.895 CFG: Lora saved to file
11:58:03.284 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T11:58:03","Uptime":"0T18:45:10","UptimeSec":67510,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":66,"Signal":-67,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
12:03:03.266 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T12:03:03","Uptime":"0T18:50:10","UptimeSec":67810,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":66,"Signal":-67,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
12:08:03.297 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T12:08:03","Uptime":"0T18:55:10","UptimeSec":68110,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":66,"Signal":-67,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
12:13:03.269 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T12:13:03","Uptime":"0T19:00:10","UptimeSec":68410,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":66,"Signal":-67,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
12:14:21.327 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T11:13:43","Ext_SensorType":1,"RSSI":-59,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":20.42,"TempC_External":20.06,"Hum_Internal":47}}
12:14:22.333 CFG: Lora saved to file
12:18:03.264 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T12:18:03","Uptime":"0T19:05:10","UptimeSec":68710,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":66,"Signal":-67,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}
12:23:03.291 MQT: tele/t3s3b/STATE = {"Time":"2026-01-20T12:23:03","Uptime":"0T19:10:10","UptimeSec":69010,"Heap":239,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":20,"MqttCount":1,"Berry":{"HeapUsed":40,"Objects":497},"POWER":"ON","Wifi":{"AP":1,"SSId":"indebuurt_IoT","BSSId":"74:83:C2:2A:F1:AC","Channel":1,"Mode":"HT20","RSSI":66,"Signal":-67,"LinkCount":1,"Downtime":"0T00:00:07"},"Hostname":"t3s3b","IPAddress":"192.168.2.137"}

LoRaWan messages are coming in at random times and are decoded by berry resulting in messages like:

10:54:20.969 MQT: tele/t3s3b/SENSOR = {"Dragino LHT52":{"Device":"Dragino LHT52","Systimestamp":"2026-01-20T09:53:43","Ext_SensorType":1,"RSSI":-60,"Ext_SensorConnected":true,"Node":3,"TempC_Internal":19.93,"TempC_External":19.68,"Hum_Internal":47.2}}
10:54:46.337 MQT: tele/t3s3b/SENSOR = {"Brievenbus":{"TempC_Internal":1.8,"Exti_status":"True","Device":"Dragino LHT65","RSSI":-65,"poll_message_status":0,"Exti_pin_level":"Low","Bat_status":"Good >= 2.65V","Work_mode":"Interrupt Sensor send","Node":4,"BattV":3.005,"Hum_Internal":89.9}}

[UBWH]

Here are my CONSOLE & SYSLOG typical recordings

CONSOLE

01:47:45.706 WIF: Checking connection...
01:47:47.376 LOR: Rcvd (636736) '401417D90080150B02AA57762E9F7358FD25C528B4', Freq 915.200, BW 125.0, SF 10, RSSI -64.0, SNR 8.5
01:47:47.387 MQT: tele/LWG-T3S3_D91714/SENSOR/A8404192A35DCAC5 = {"LwDecoded":{"DDS75L-Office":{"Distance":1170,"RSSI":-64,"Node":1,"BattV":4.044,"Device":"Dragino DDS75-LB/LS"}}}
01:47:47.656 CFG: Lora saved to file
01:47:59.680 BRY: GC from 55405 to 52056 bytes, objects freed 44/737 (in 4 ms) - slots from 731/1079 to 648/1079
01:47:59.683 MQT: tele/LWG-T3S3_D91714/STATE = {"Time":"2026-01-21T01:47:59","Uptime":"0T00:10:45","UptimeSec":645,"Heap":227,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":50,"Objects":737},"POWER":"ON","Wifi":{"AP":1,"SSId":"UniFi","BSSId":"44:D9:E7:F7:8A:FD","Channel":1,"Mode":"HT20","RSSI":42,"Signal":-79,"LinkCount":1,"Downtime":"0T00:00:09"},"Hostname":"LWG-T3S3-D91714-5908","IPAddress":"10.1.1.9"}
01:48:08.113 WIF: Checking connection...

SYSLOG

01-21-2026    08:48:08    Local0.Debug    10.1.1.9    1 2026-01-21T01:48:08.113000+01:00 LWG-T3S3-D91714-5908 tasmota - - - WIF: Checking connection...
01-21-2026    08:48:00    Local0.Info    10.1.1.9    1 2026-01-21T01:47:59.683000+01:00 LWG-T3S3-D91714-5908 tasmota - - - MQT: tele/LWG-T3S3_D91714/STATE = {"Time":"2026-01-21T01:47:59","Uptime":"0T00:10:45","UptimeSec":645,"Heap":227,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"Berry":{"HeapUsed":50,"Objects":737},"POWER":"ON","Wifi":{"AP":1,"SSId":"UniFi","BSSId":"44:D9:E7:F7:8A:FD","Channel":1,"Mode":"HT20","RSSI":42,"Signal":-79,"LinkCount":1,"Downtime":"0T00:00:09"},"Hostname":"LWG-T3S3-D91714-5908","IPAddress":"10.1.1.9"}
01-21-2026    08:47:47    Local0.Debug    10.1.1.9    1 2026-01-21T01:47:47.656000+01:00 LWG-T3S3-D91714-5908 tasmota - - - CFG: Lora saved to file
01-21-2026    08:47:47    Local0.Info    10.1.1.9    1 2026-01-21T01:47:47.387000+01:00 LWG-T3S3-D91714-5908 tasmota - - - MQT: tele/LWG-T3S3_D91714/SENSOR/A8404192A35DCAC5 = {"LwDecoded":{"DDS75L-Office":{"Distance":1170,"RSSI":-64,"Node":1,"BattV":4.044,"Device":"Dragino DDS75-LB/LS"}}}
01-21-2026    08:47:47    Local0.Debug    10.1.1.9    1 2026-01-21T01:47:47.376000+01:00 LWG-T3S3-D91714-5908 tasmota - - - LOR: Rcvd (636736) '401417D90080150B02AA57762E9F7358FD25C528B4', Freq 915.200, BW 125.0, SF 10, RSSI -64.0, SNR 8.5
01-21-2026    08:47:45    Local0.Debug    10.1.1.9    1 2026-01-21T01:47:45.706000+01:00 LWG-T3S3-D91714-5908 tasmota - - - WIF: Checking connection...

[UBWH]

Comment:
My assumption that a RESTART 1 is will loose too many packets at because the remote device has to re-join is wrong; No re-join needed.

So that means:

OPTION 1 (not too bad)
RESTART 1 daily. Loose too much data if the 'hang' happens early in the 24 hrs.
Not as bad as I thought, but still an ugly fix.

OPTION 2
Restart just the SX1276 regularly ? (how often?) (Do LoRaWAN devices have to re-join?)
Better (assuming no re-join needed)

OPTION 3
Restart the SX1276 only if no new packets received in ?? minutes
Best. Tasmota would need a new parameter keeping track of 'timeLastLoRaWanRX'. Then (???) ...

if( (now - timeLastLoRaWanRX) > 60 minutes){
  restartSX1276()
}

Let's leave until later how often to reset things.

Instead - I would like to investigate:

1. Is there an existing way to manually Restart the SX1276? If not - could such a command be added (Even if only for testing)
2. Then I can run that command next time I see the messages stop. This will tell us if we have a mechanism that will 'fix' the problem
3. Later - work out how/when to automatically run that command.

[arendst]

I've added command LoraInit which resets the hardware and reinits it with current parameters.

I also see that I use a different library for SX126x and SX127x. At conception time the SX127x library looked a lot smaller than the SX126x so I started using that one. The SX126x is not supported by the LoRa library. I'll have a look if it's feasable to move the SX127x driver from LoRa to RadioLib library too.

11:30:36.047 MQT: tele/t3s3a/SENSOR = {"Dragino LDS02":{"RSSI":-34,"Node":1,"Alarm":false,"Device":"Dragino LDS02","DoorOpenEvents":84,"DoorOpen":false,"BattV":3.078,"DoorOpenLastDuration_mins":26}}
11:30:36.899 CFG: Lora saved to file
11:30:45.730 CMD: lorainit
11:30:45.730 SRC: UsbConsole
11:30:45.730 CMD: Grp 0, Cmd 'LORAINIT', Idx 1, Len 0, Pld -99, Data ''
11:30:45.801 MQT: stat/t3s3a/RESULT = {"LoRaInit":"Done"}
11:30:50.765 MQT: tele/t3s3a/SENSOR = {"Dragino LDS02":{"RSSI":-34,"Node":1,"Alarm":false,"Device":"Dragino LDS02","DoorOpenEvents":85,"DoorOpen":true,"BattV":3.072,"DoorOpenLastDuration_mins":26}}
11:30:51.641 CFG: Lora saved to file

[UBWH]

Excellent.

I will build a new DEVELOPMENT binary and run it long term.

Then

• Wait until the data stops flowing.
• Run the new command.
• See if the problem disappears.

Note: This might take 1 month before I come back and report if this worked, or not, as the issue is rare.

Thanks!

Rob