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Arduino Nano - Atmel MEGA328P

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Pinout

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    5V - comes form USB-C VBUS and/or output of the regulator (VIN) VIN - goes to the regulator and can be maximum 15 V; minimum 5 + 1.2 (dropout) for regulator to regulate 3V3 - output from USB-UART 

    Atmel MEGA328P

    atmega.jpg

    Datasheet: ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf

    LM1117C 50 - 5V regulator

    arduino_nano_lm.jpg

    Datasheet: lm1117.pdf

    CH340C - USB-UART

    Datasheet: CH340DS1.PDF

    Tooling

    Install IDE (and avrdude):

    xi arduino

    The MCU shows up on /dev/ttyUSB0 and can be programmed with CTRL-R (Compile/Verify) and CTRL-U (Upload).

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