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Amazon.com: DaFuRui RS232 to TTL Converter Module,5PCS MAX3232 3.3V to 5V RS2323 COM Serial Prot Board to TTL Connector for Arduino Microcontrollers : Electronics
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Amazon.com: seeed studio Base Shield V2 / Board Compatible: The Number of pinout is The Same as That of Arduino UNO R3 : Electronics
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Amazon.com: seeed studio Base Shield V2 / Board Compatible: The Number of pinout is The Same as That of Arduino UNO R3 : Electronics
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