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BB-CH340T

USB to Serial converter with CH340T IC, suitable for breadboarding

https://www.olimex.com/Products/Breadboarding/BB-CH340T/open-source-hardware

BB-CH340T is OSHW certified Open Source Hardware with UID BG000069.

USB <-> serial converter with 3.3V or 5V voltage selection (both powering and serial lines)

Implements CH340, popular chip with good software support
Fully open hardware design
USB mini connector - USB 2.0 full speed compatible
Serial interface with variable baud rate - 50 bps to 2Mbps
Breadboard-friendly - 4 pin 0.1" header
Extracts power from the USB - can provide either up to 80mA@3.3V or up to 450mA@5V
3.3V or 5V output controlled by an SMT jumper - soldered by default to 3.3V
Serial datalines (RXD and TXD) kept at same voltage levels as the selected voltage output
PCB dimensions: (1000 x 1050)mil ~ (25.5 x 26.5)mm

BB-CH340T doesn't work well with bauds over 115200. What to do?
Some older drivers might have wrong timings, causing worse throughput. Download and install the latest drivers for CH340. If you are using Linux make sure to try with these drivers: high-speed driver for Linux

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