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USBHUB

Overview

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This is a full-featured USB debugger with two USB expansion outputs, one USB to serial port and one Jlink. It can be directly plugged into the USB port of the computer. Just install the serial port and Jlink driver.

The chip used by USBhub is GL850, a four-way USB2.0 expansion. You can use PL2302 or the compatible FT232RL to convert the serial port to USB. The actual test is that FT232 is stable. Jlink uses STM32F103C8T6, and the version is JlinkOB version. I will provide the firmware at the end of the article.

WARNING: The board is not protected. Students with high application requirements should modify the version to add a protection circuit.

The proofing board looks like this:

The welded board looks like this: WeChat picture_20210324084537.jpg

The device manager plugged into the computer looks like this: QQ screenshot 20210324091257.png

Design Files

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Update:2025-06-24 04:32:30

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