Need advice PicoMiteHDMI PS/2 PCB layout


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matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10967
Posted: 03:55pm 02 Jul 2025      

  Quote  Did you tried a bare pico with a normal passive (OTG) adaptor cable?


No: if it works with a hub then it isn't a S/W issue and, if genuinely repeatable, must be a Pico USB host electrical issue when trying to power a keyboard.
The current USB host polling rate is 50Hz. I could increase this but don't believe anyone is typing a over 50 characters a second.
Edited 2025-07-03 02:03 by matherp