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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. Arduino

  6. Serial - Arduino Reference

  7. Serial Communication in Arduino - Send and Receive Serial Data …

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

  9. Arduino Nano - RS232 | Arduino Nano Tutorial

  10. Using Arduino to read and write data to RS232 device