念慈菴

410_USB_HUB_Pro (verified)

Overview

The USB Hub based on SL2.1A as the main controller provides an expansion interface for 410 devices. This expansion version is equipped with 2*USB2.0 interfaces, SD card slot (driver chip gl823k), and is equipped with a serial port driven by CH340N chip

Verified: serial port, USB port, SD card slot

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Change log:

2022.07.22 Complete schematic diagram and PCB drawing

2022.07.23 Readjust PCB layout

2022.07.27 Changed the positions of Type-C port and SD card slot

2022.07.30 Changed the sd card module circuit

2022.08.02 Changed PCB layout

2022.08.05 Circuit verification passed

2022.08.06 According to the suggestion of cool friend Zy143L, the front copper paving has been changed from +5v to GND

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ToDo:

1. Change automatic wiring to manual wiring (modify when you are free one day)

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Physical picture 1 Physical picture 2 terminal display

PS: This is the first time for a mechanical engineering student to draw this kind of circuit. I welcome everyone to correct my mistakes.

Design Files

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