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  1. Arduino RS232 | Arduino Tutorial - Arduino Getting Started

  2. Arduino & RS-232 Protocol

  3. How to read from and write to rs232 device from/to Arduino

  4. How to interface Arduino with RS232 communication protocol: …

  5. Serial - Arduino Reference

  6. Arduino RS-232: Serial Communication and Data Interfacing

  7. Arduino Communication To and From a Serial RS232 Device

  8. Universal Asynchronous Receiver-Transmitter (UART) - Arduino

  9. Arduino Serial Communication Tutorial - DeepBlue

  10. How to interface Arduino with RS232 communication protocol