Usually, USB sticks attached to Raspberry Pi will get assigned ports in an increasing manner such as /dev/ttyACM0, /dev/ttyACM1, etc. This may become a problem whenever you reattach your USB devices to a different port, you add new devices, or you simply reboot your RPi. The reason is that one speci…

Still wait for an answer, The port is missing in Paper UI and in Habmin too. If i write it manually like “/dev/ttyUSB-ZStick” than the stick does not work. I get a message: “Serial Error; Port {0} does not exist”, But the port exist, if i ls -l /dev/ttyUSB* i gen an answer /dev/ttyUSB-ZStick → ttyA…

[image] Rintano: Still wait for an answer If you don’t provide enough information we can’t answer, sorry. Which openHAB version? If you are on some of the newer snapshots there is a known issue: [nrjavaserial] Multiple versions ope…

[image] sihui: Still wait for an answer If you don’t provide enough information we can’t answer, sorry. Read above.. There has been plenty informations, both in this thread an others.. Symlinks does not work. Using 4 USB devices on a Rpi wiht openhab (atm openhab 2.5M1 build #1575) makes i…

Sry, but i dont know what information u need. If i plug in the Aeotec z-wave stick, the system find it under /dev/ttyACM0. A made a udev rule, where i set a link from /dev/ttyUSB-ZStick to ttyACM0. But after this if i want to add the Stick as controller to Paper UI or Habmin, there is no possibil…

[image] Kim_Andersen: Read above… There has been plenty informations, both in this thread an others Sorry, it was not you I was answering to. Forgot the quote.

[image] Rintano: Sry, but i dont know what information u need. As a minimum your openHAB version, even better #10: [image] How to ask a good question / Help Us Help You Tutorials & Examples Before you ask… Community forum is NOT a helpdesk Let’s put this…

I have the OpenHab 2.4 stable version and Ubuntu 18.04 LTS. Everything installed 3 days ago.

Did you also add that that port Symlink in the extra java opts as described in the first part here Serial Port Configuration | openHAB ?

i added this to my /etc/default/openhab2 EXTRA_JAVA_OPTS=“-Dgnu.io.rxtx.SerialPorts=/dev/ttyUSB-ZStick”

@Rintano I have been using 3 USB devices on a Pi 3b+ with Symlinks and Openhab no problem. Works fine on a reboot. The zwave binding is actually the one that worked best with Symlinks for me. On a Pi with Openhabian and oh 2.5M1 this works for me: Definition of my Symlinks added to the bottom of /e…

Raspberry Pi - Make serial USB ports persistent via symlinks

Tutorials & Examples

sihui (SiHui) April 29, 2019, 5:11am 27

As a minimum your openHAB version, even better #10:

In your case: old openHAB version, probably an operating system issue, newer snapshot openHAB version, probably an openHAB related problem (see my link to github)