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The board contains an STM32 microcontroller, an RF transceiver and antenna interface as well as a USB full-speed interface

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AmziSys/STM32-RF

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STM32-RF

---------------------------------- STM32RF board ----------------------------------------

  • Intro: The idea of the board is to be used in a system where data is sent over the air. The data is received by the antenna and processed in the microcontroller then sent out to a host computer via the USB interface.

  • Design: The board contains:

    • STM32L432KBU6: STM32 microcontroller
    • nRF24L01P: 2.4GHz RF transceiver suitable for ultra-low power wireless applications (ISM band)
    • Power supply: USB, ESD protection, Fuse, and LDO regulator
    • Antenna interface and its matching circuit
    • R and C

During the design process, the system/board was divided into 3 parts: the RF part (receive data), The microcontroller part (processing data), and the USB part (communicate data with a PC). In general, anything RF needs to be in 4 layers. So, the front layer will be used for signals, the inner-cooper-layer 1 will be ground (GND), the Inner-cooper-layer 2 will be power (or 3.3V), and the bottom copper layer will be used for signals.

  • The design was made in Kicad 6

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The board contains an STM32 microcontroller, an RF transceiver and antenna interface as well as a USB full-speed interface

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