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USB Power Meter V2.0

 
Overview
This system acquires current and voltage parameters using the INA226 voltage and current acquisition chip. It incorporates a built-in PD boost decoy based on the CH224 protocol IC, supporting voltage levels of 5/9/12/15/20V.
An LDO is used for buck conversion; however, voltages above 12V have not been tested as the LDO may overheat. The system is based on an STM32F103C6T6 main controller, and can be directly programmed using a GD32F103C8T6. Currently, it is tested to be compatible with GD/ST chips of the same series. Due to its simple functionality and software-implemented protocols, it is expected to be directly compatible with other domestically produced chips.
The front panel and back panel are connected using M3 studs.
参考设计图片
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Update:2026-03-28 05:25:02

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