338. Design of shopping cart QR code scanning camera settlement and anti-theft system design based on STM32 microcontroller (program + schematic diagram + component list + supporting information, etc.) - Code World

338. Design of shopping cart QR code scanning camera settlement and anti-theft system design based on STM32 microcontroller (program + schematic diagram + component list + supporting information, etc.)

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337. Spectral subtraction speech recognition control smart home system design based on STM32 microcontroller (program + schematic + component list + supporting information, etc.)

337. Spectral subtraction speech recognition control smart home system design based on STM32 microcontroller (program + schematic + component list + supporting information, etc.)

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334. Design of multifunctional fresh-keeping voice medicine box alarm system based on STM32 microcontroller (program + schematic diagram + PCB source file + component list + supporting information, etc.)

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