Design choices

A project log for WiFi and USB for pocketbeagle

no wifi - 4 stars ... RTL8188 module and small usb hub with usual suspects

davedarkodavedarko 10/07/2017 at 14:190 Comments

Seems like there aren't any capacitors needed for the crystal, although it seems unusual coming from every other chip I've used that needed a crystal. I've added 10pF like in #(One More) Raspberry Pi Zero USB Hub but doubt they're necessary. 

Only one extra USB port has a plug, out of size restrictions etc. - a second one has the RTL8188 directly connected. Therefore only one LED is really necessary for the "connected" status. 

Added a PRTR5V0U2X as ESD protection for the "external" USB port.