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Joined: Fri Jul 12, 2019 8:03 pm

Aeotec Z-Stick not showing up in /dev/ (RBPi 4 Model B)

Fri Jul 12, 2019 9:08 pm

There's not even so much as a peep from the syslog either. Tried all 4 USB ports on the RBPi. From what I understand, it should show up as /dev/ttyACM0 or /dev/ttyACM1 if there's such a device already, but there's nothing. However, the LED does light up and does it's Yellow-Red-Blue routine which from what I'm reading is normal. It's getting power from the USB port at least.

I've plugged it into a windows machine to see if it's detected there, and it immediately gets assigned a COM port in the Device Manager, so it does seem to work. Plugging in a random USB memory stick into the Raspberry Pi 4 shows up immediately and makes syslog spit out information about it, so the USB ports are functional.

Does anybody have any idea what might be the issue here?

Here's a screenshot of the output of some commands while both the Aeotec Z-Stick and USB memory sticks are inserted:
USB_Devices_list_with_USBstorage_and_Z-Stick_plugged_in.png (138.3 KiB) Viewed 1125 times
Here is it showing up fine in Windows:
Z-Stick_showing_up_in_Windows.png (4.27 KiB) Viewed 1125 times

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Joined: Sat Jul 13, 2019 5:08 pm

Re: Aeotec Z-Stick not showing up in /dev/ (RBPi 4 Model B)

Sat Jul 13, 2019 5:13 pm

I'm having this issue too. The Z-Stick works fine on my RPi3.

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Joined: Mon Jan 22, 2018 2:12 pm

Re: Aeotec Z-Stick not showing up in /dev/ (RBPi 4 Model B)

Tue Jul 30, 2019 1:56 pm

I had the same issue - until I plugged the stick into the USB ports directly next to the ethernet jack.

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Raspberry Pi Engineer & Forum Moderator
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Re: Aeotec Z-Stick not showing up in /dev/ (RBPi 4 Model B)

Tue Jul 30, 2019 2:19 pm

Please read this issue for details on this non-compliant device.

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Posts: 1
Joined: Sun Aug 25, 2019 8:00 pm

Re: Aeotec Z-Stick not showing up in /dev/ (RBPi 4 Model B)

Sun Aug 25, 2019 8:04 pm


I have the exact same problem. However mine was working for a week until I rebooted my PI yesterday and I have been unable to get it working since.
Strange that it was working for a while and then stoped.
As a workaround I have ordered a USB hub from Amazon with 5-7 days shipping.

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