Platform information: Raspberry pi 4 Model B Rev 1.1 Hardware: CPUArchitecture/RAM/storage OS: what OS is used and which version Kernel = Linux 4.19.66-v7l+ Java Runtime Environment: which java platform is used and what version openHAB version:openHAB 2.5.0~M2-1 (Milestone Build) Issue of the to…

Hi @foruny I’m guessing you’re plugging the Aeotec Z-stick into the RPi directly? Unfortunately, the two have issues together: [image] RaspberryPi4 + Z-Wave Gen5 [OFFLINE - BRIDGE_OFFLINE] Beginners Hi @chev , Firstly welcome to the forums, I believe you have…

run this command and post output dmesg -T | grep tty

This topic might help you [image] USB Problems on linux Beginners I am trying to figure out how USB works on openhabian on rpi3B+. On windows USB sticks shows up as com5, com17 and so on.. And the numbers changes on reboot. On my RPI I seem to experience the …

After running dmesg -c I ran dmesg -T | grep tty No output. It seems like plugging the stick is not recognized by the system.

Plugging the zstick directly into a Pi4 will not work because the zstick dies not follow the usb specification. The port shuts down to prevent hardware damage to the Pi. A workaround is to use a USB 2 hub between the Pi4 and the zstick. The permanent solution is to use a usb certified device that …

Thank you @Benjy . I understand that there is a design flaw on the hardware of the Aeon Labs Z-Stick Gen5, not being able to pass usb certification program. Fortunately the workaround of connecting though an USB hub worked for me.

after dmesg -T | grep tty [Wed Jun 8 17:48:48 2022] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 video=HDMI-A-1:640x480M@60 smsc95xx.macaddr=E4:5F:01:79:7C:5B vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyS0,11…

[Screenshot 2022-06-09 140803] cant find ACM0 and AMA0 isnt working =(

[image] Paul_Matteschk: cant find ACM0 and AMA0 isnt working what is the result of the command ls -l /dev/serial/by-id/

[image] Wolfgang_S: ls -l /dev/serial/by-id/ its crazy, I connected an arduino UNO. sometimes ttyACM0 is showing and the board is connected some minutes later the board is no longer available / not found ls: cannot access '/dev/serial/by-id/': No such file or directory

[image] Paul_Matteschk: some minutes later the board is no longer available / not found could it be that this is linked to a power supply problem.

Port /dev/ttyACM0 does not exist in Raspbian GNU/Linux 10 (buster)

Setup, Configuration and Use Installation

Benjy (Ben Clark) September 5, 2019, 10:29pm 4

Hi @foruny

I’m guessing you’re plugging the Aeotec Z-stick into the RPi directly? Unfortunately, the two have issues together:

I use an amazonbasics hub attached to the RPi 4 to use my Aeotec stick. /dev/ACM0 shows up after then.