USB current and voltage detection

PDF_usb current and voltage detection.zip

Altium_usb current and voltage detection.zip

PADS_usb current and voltage detection.zip

BOM_usb current and voltage detection.xlsx

92071

Sky Star Extension Board

This extended version is primarily designed for learners with many independent modules requiring 3.3V or 5V power. It allows for easy power selection, and the rearranged layout makes it easy to locate the GPIO. It also features four independent buttons, three LEDs, a buzzer, an MPU6050, and a screen.

This extended version is mainly intended for users with many independent functional modules that require 5V or 3.3V power. The voltage is selected using the jumper cap on the right side of the lead-out pins. The screen can be fixed to the SkyStar board using double-sided foam tape, but the screen's FPC will block the memory card. You can reinstall the screen after installing the memory card (tweezers are required).
 
The board has a surface-mount 6050, a buzzer, and a screen driver circuit, allowing for small acceleration or gesture-based applications, such as a gravity-sensing game console or menu selection controlled by acceleration
. (I forgot to take pictures during installation, so here's a 3D image).
The screen can be fixed to the SkyStar board using double-sided foam tape, but the screen's FPC will block the memory card. You can reinstall the screen after installing the memory card (tweezers are required).
The screen does not block the three onboard buttons on the SkyStar board. Resetting and downloading do not require re-leading
 
the screen. The test program is not yet written. Except for the screen and 6050, other components are working normally. The 6050 seems to have a cold solder joint; I'll try resoldering it with a bare board after some time. Updates will follow after testing.

PDF_SkyStar Extension Board.zip

Altium_SkyStarExtensionPad.zip

PADS_SkyStar Expansion Board.zip

BOM_SkyStar Expansion Board.xlsx

92075

Purple Lightning Divine Sword with Handheld Ultraviolet Disinfection Lamp

A handheld ultraviolet disinfection lamp for surface sterilization. Use with caution as it is relatively dangerous. While the project was successfully completed, many aspects are still imperfect; this is only provided for reference, please attempt to replicate it with caution.

A handheld UV sterilization lamp for surface disinfection. It is relatively dangerous to use; please use with caution. While the project was successfully completed, many aspects are still imperfect. This is only provided for reference; please attempt to replicate it with caution. An introductory video is available on Bilibili.