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GitHub - mogenson/atmega32u4-usb-serial: Rust USB serial driver crate for atmega32u4 based on FFI bindings for Teensy AVR-C library
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Teensy (ATmega32u4 USB dev board) 2.0 [ATmega32u4] : ID 199 : $16.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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