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CH340G USB to RS232 TTL module schematic (D-SUN-V3.0) · Nice Circuits - Electronics, 3d printing and robots
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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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Amazon.com: HiLetgo CP2102 USB 2.0 to TTL Module Serial Converter Adapter Module USB to TTL Downloader with Jumper Wires : Electronics
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