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Amazon.com: DIYmalls CP2102 USB to TTL Adapter Serial Module USB to RS485 232, TTL to RS232 485,RS232 to 485 + 4Pin Dupont Cable Jumper Wire Female to Female for Arduino Nextion Display
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USB to TTL Serial Cable - Debug / Console Cable for Raspberry Pi : ID 954 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Connecting to USB serial port on my Leonardo - #21 by Robin2 - Interfacing w/ Software on the Computer - Arduino Forum
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