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serial - CH340G based USB to UART adapter - Pinouts - Can't find schematics - Arduino Stack Exchange
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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 Uart Ch340 - Serial Converter, 5v/3.3v - Universal. Not Need Switching. Ic Ch340g - Integrated Circuits - AliExpress
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