Adafruit USB Multi-Protocol Serial Adapter
Overview
This is a USB-to-multi-protocol serial adapter that provides host PC connectivity to RS-232, TTL UART, and RS-485 serial interfaces. It lets engineers bridge USB on a computer to multiple common physical serial standards for development, debugging, and device communication. The board exposes the different serial interfaces and wiring points for easy hookup to target hardware.
Why Choose This Part
One adapter covers three common serial physical layers, reducing the need to carry multiple dedicated dongles. It simplifies test and development workflows by letting you switch between TTL UART, RS-232, and RS-485 interfaces without redesigning cabling. The board works with standard USB serial host setups and common terminal tools for quick integration into existing toolchains.
Applications
Getting Started
Plug the adapter into a USB port and follow the product documentation for selecting the desired serial interface and wiring the appropriate pins or terminal blocks. Install any platform-specific drivers if required (see the Adafruit product page and guide). Use a terminal program such as PuTTY, screen, or minicom to open the serial port and configure baud rate, parity, and flow control as needed. For RS-485, wire the differential A/B lines correctly and follow termination/repeater guidelines for your bus topology.
