DFRobot
6-in-1 USB to Serial Converter
A versatile USB-to-serial converter module supporting six conversion modes: USB-TTL, USB-232, USB-485, TTL-232, TTL-485, and 232-485. Switch between modes us...
A versatile USB-to-serial converter module supporting six conversion modes: USB-TTL, USB-232, USB-485, TTL-232, TTL-485, and 232-485. Switch between modes using onboard DIP switches — no need for multiple adapters.
Built around the CP2102 chip with 3.3V/5V compatibility. Includes 500mA fuse protection against short circuits and over-current, plus LED indicators for power (yellow), RX (red), and TX (green) status.
Key Features
- 6 Conversion Modes – USB-TTL, USB-232, USB-485, TTL-232, TTL-485, 232-485
- DIP Switch Selection – Quickly switch modes without rewiring
- 3.3V/5V Compatible – Works with both voltage levels
- 500mA Fuse Protection – Over-current and short-circuit protection built in
- Status LEDs – Yellow (USB/COM), red (RX), green (TX)
- Up to 2 Mbps – High-speed baud rate support
Specifications
- Chip – CP2102
- Voltage – 3.3V/5V compatible
- Baud Rate – Up to 2 Mbps
- Protection – 500mA fuse (over-current and short-circuit)
- OS Support – Windows, Linux, macOS
- Dimensions – 31 × 18mm
Mode Selection
- USB to TTL – DIP1 (USB) On, DIP2 (485) Off, S1 Down
- USB to 232 – DIP1 (USB) On, DIP2 (485) Off, S1 Up
- USB to 485 – DIP1 (USB) On, DIP2 (485) On, S1 Down
- TTL to 232 – DIP1 (USB) Off, DIP2 (485) Off, S1 Down
- TTL to 485 – DIP1 (USB) Off, DIP2 (485) On, S1 Down
- 232 to 485 – DIP1 (USB) Off, DIP2 (485) On, S1 Down
Ideal For
- Debugging and programming microcontrollers via serial
- Industrial RS-485 and RS-232 device communication
- Converting between serial protocols without multiple adapters
Package Contents
- 1× 6-in-1 USB to Serial Converter
Jargon buster
Plain-language definitions for the technical terms used above.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- DIP switch
- A DIP switch is a small set of physical on/off switches used to configure hardware settings without software. It matters because changing features such as auto power-on or charging limits may require moving these tiny switches correctly.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- RS-232
- An older serial communication standard that uses higher signal voltages than modern microcontroller logic pins. If you are connecting this breakout to a microcontroller, you may need an RS-232 interface or level converter rather than wiring it directly.
- USB to serial converter
- A chip that turns the USB connection from your computer into serial data that the microcontroller can understand. It matters because this board uses it for programming and debugging instead of appearing as a direct native USB device such as a keyboard or mouse.
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Brands
Prototyping & Wiring
Supplier page — dfrobot.com
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Related Tutorials
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