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by SignOver
Mon Jan 27, 2020 3:22 pm
Forum: Troubleshooting
Topic: Pi4 && Aeotec Z-Wave USB Stick Gen5
Replies: 39
Views: 37313

Re: Pi4 && Aeotec Z-Wave USB Stick Gen5

Bit late replying, and since you only made one post I expect you are long gone, but the USB-C power issue is entirely unrelated to this issue, which is clearly caused by the third party device behaving non-compliantly. I am long gone, but if we can say that Aeotec's device is behaving non-compliant...
by SignOver
Sun Sep 08, 2019 5:57 pm
Forum: Troubleshooting
Topic: Pi4 && Aeotec Z-Wave USB Stick Gen5
Replies: 39
Views: 37313

Re: Pi4 && Aeotec Z-Wave USB Stick Gen5

This device has some very non-compliant behaviours. - On initial connect, it pulls D+ to +5V through a strong pull-up. After 20ms, the pull strength drops which results in D+ dropping to about 4.1V. This is a gross violation of the USB electrical spec. - If I plug this device into either the Pi 4 o...

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