Domoticz restarting repeatedly rflink

[Domv31]

Version: 2026.3
Platform: RPI3B RapiOS trixie 13.7 32GB Sdcard
Plugin/Hardware: rflink 433.92MHz

Hello
I am new on the forum
My Domoticz is running since years but since 3 months Domotics is restarting Rflink nearly every hour. It is may be related to trixie because i was previously on bookworm
I am using the official Raspberry supply and i confirm the voltage at USB output to Rflink is 5.1V (at least when i measure. Didn’t manage to get the voltage during Rflink restarting event with a scope)
Nothing else connected on other USB ports
The sensors from Rflink are recorded nominally every 5mn
Any idea why domoticz is doing that?

Short extract from the log (No errors only status reported in the log)

Code: Select all

026-09-20 06:07:14.584  Status: Rflink1: Controller Initialized!...
2026-09-20 06:07:14.883  Status: Rflink1: RFLink Detected, Version: 1.1 Revision: 51 Build: 1
2026-09-20 06:15:20.290  Status: Rflink1: Controller Initialized!...
2026-09-20 06:15:20.499  Status: Rflink1: RFLink Detected, Version: 1.1 Revision: 51 Build: 1
2026-09-20 07:07:48.931  Status: Rflink1: Controller Initialized!...
2026-09-20 07:07:49.007  Status: Rflink1: RFLink Detected, Version: 1.1 Revision: 51 Build: 1
2026-09-20 07:30:56.974  Status: Rflink1: Controller Initialized!...
2026-09-20 07:30:57.125  Status: Rflink1: RFLink Detected, Version: 1.1 Revision: 51 Build: 1
2026-09-20 08:36:30.918  Status: Rflink1: Controller Initialized!...
2026-09-20 08:36:31.016  Status: Rflink1: RFLink Detected, Version: 1.1 Revision: 51 Build: 1
2026-09-20 08:36:31.197  Status: Rflink1: Controller Initialized!...
2026-09-20 08:36:31.302  Status: Rflink1: RFLink Detected, Version: 1.1 Revision: 51 Build: 1
 

I have another Domoticz 2026.3 running on a rpi4 2GB trixie 13.7 with Rflink rev 48 and RDS RTL dongle running nominaly, so this behaviour is maybe linked only to rpi3b with trixie.

[gizmocuz]

That was my first reaction, a problem with your power supply.
Can you exchange it with another to see it that solves it?

I have attached such a devices for years and have no such error, so it is not related to domoticz.
But it could be related to something the RFLink is receiving also that crashes internally ?

[Domv31]

Hello,
I have tried with a wall usb adaptor and a usb tester.
5.1V measured and 400mA consumption of the rpi +Rflink
Domoticz boot up nominally but the red led was blinking
No Rflink initialisation reported in the log for 15mn

Then I moved the usb tester from the wall adaptor to the rpi usb output supplying the Rflink
4.8V 75mA measured=> voltage too low
Domoticz boot up nominally and the red led was blinking at much lower frequeny probably because the voltage drop of the tester was swaped from rpi input to rpi output
Rflink initialisation was reported in the log 30 mn after boot.
low voltage warning was also reported by raspi OS on the desktop interface

I switched back to the official supply
5.1V and 85mA measured on the Rflink usb port and red led was no more blinking
Nominal Domoticz boot but Rflink initialisation reported in the log after 10mn operation

So the anomaly seems not linked to the supply quality, or m’y supply has some transients drops not detected by my usb tester and not dectected by raspiOS

Is there any other logs that could help identify the origin of this strange behaviour?

[gizmocuz]

Don't you have a good 3A supply you can also use for the test?