Olimex BB-CH340T USB to Serial Converter

The Olimex USB-to-serial converter uses a CH340 - a popular chip with good software support. The module itself is breadboard-compatible, with four 2.34mm male pins ready to plug into your breadboard.

The board uses a micro-USB connection which is USB 2.0 full-speed compatible. It takes power from this USB connection, offering up to 80mA @3.3V or up to 450mA @5V. The 3.3V or 5V output is controlled by an SMT jumper - soldered by default to 3.3V.

Need a micro-USB cable? Grab one here!

Features

• CH340, a popular chip with good software support
• Fully open hardware design
• USB micro connector - USB 2.0 full-speed compatible
• Serial interface with variable baud rate - 50 bps to 2Mbps
• Breadboard-friendly - 4 pins 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 data lines (RXD and TXD) kept at the same voltage levels as the selected voltage output
• PCB dimensions: (1000 x 1050) mil  (25.5 x 26.5) mm

Resources

Documents

• Datasheet
• BB-CH340T European Declaration of Conformity
• BB-CH340T UKCA Declaration of Conformity

Hardware

• KiCAD schematic and board files
• Schematic

Software

• Driver installer for Windows
• High-speed driver for Linux
• Driver for Mac
• Driver for Android

Package Contents

• 1x BB-CH340T USB to Serial Converter