WitMotion cp2102 module

WITMOTION USB-UART 6-in-1 Serial Adapter (CP2102 Module) User Manual

Model: cp2102 module

1. Ro-ràdh

The WitMotion USB-UART 6-in-1 Multi-function Serial Adapter is a versatile device designed for various serial communication needs. It supports multiple conversion functions including USB-TTL, USB-RS232, USB-RS485, TTL-232, TTL-485, and 232-485. This adapter is built with a reliable CP2102 chipset and is compatible with a wide range of operating systems and development platforms, making it suitable for diverse projects.

2. Feartan toraidh

  • Ioma-ghnìomhachd: Supports USB-TTL, USB-RS232, USB-RS485, TTL-232, TTL-485, and 232-485 conversions.
  • Co-fhreagarrachd farsaing: Compatible with Windows XP / 7 / 8 / 10 (32bit / 64bit), Linux, Wince, Mac, and Vista operating systems.
  • Dealbhadh làidir: Features a high-quality mode switch (tested for 100,000 cycles), clear status indicator LEDs, an upgraded TO5 fuse for excellent protection against short-circuits, and an imported CP2102 chipset for stable and reliable performance.
  • Ìre Baud atharrachail: Supports baud rates from 300 bps to 1.5 Mbps.

3. Pasgan-susbaint

Tha na stuthan a leanas anns a’ phacaid:

  • 1x WitMotion 6-in-1 Serial Adapter
  • 4x DuPont Cables
  • Cairt fàilte 1x

All components are securely packaged in an anti-static bag to prevent damage during transit.

WitMotion 6-in-1 Serial Adapter packaging box and contents

Image: Packaging box and included items.

4. Toradh thallview and Pinout

4.1. Adapter Layout

The images below illustrate the key components and connectors of the 6-in-1 serial adapter.

Barr view of the WitMotion 6-in-1 Serial Adapter showing input/output connector, 485IC, and 232IC.

Ìomhaigh: Mullach view of the adapter, highlighting the input/output connector, 485IC, and 232IC.

Bun view of the WitMotion 6-in-1 Serial Adapter showing USB connector, mode selection switch, resettable fuses, CP2102 IC, and LED indicators.

Ìomhaigh: Bun view of the adapter, highlighting the USB connector, mode selection switch, resettable fuses, CP2102 IC, and LED indicators.

4.2. Tuairisgeul Pin

The following table details the function of each pin on the adapter's input/output connector:

Ainm Gnìomh
+5V Module power, 5V input, output
3V3 Module power, 3.3V output
RX Serial data input, TTL level
TX Serial data output, TTL level
232R Serial data input, 232 level
232T Serial data output, 232 level
A RS485 Signal line A
B RS485 Signal line B
GND Talamh
DTR Data Terminal Ready / Control Flow Output
RTS Iarrtas airson a chuir

Image: Pinout table for the serial adapter.

5. Setup agus Stàladh

5.1. Stàladh dràibhear

Before using the adapter, you must install the appropriate drivers for the CP2102 chipset on your computer. Drivers are typically available for Windows, Linux, and Mac operating systems. Please visit the official WitMotion weblàrach (www.wit-motion.com) for the latest drivers and installation tutorials.

  1. Download the correct CP2102 driver for your operating system from the WitMotion weblàrach.
  2. Lean an stiùireadh air-sgrìn gus an draibhear a stàladh.
  3. After installation, connect the adapter to your computer's USB port. The system should recognize the device and assign a COM port.

5.2. A’ ceangal ri inneal

Connect the adapter to your target device using the DuPont cables. Ensure correct pin connections based on the desired communication protocol (TTL, RS232, or RS485). Refer to the operating instructions for specific connection diagrams.

6. Stiùireadh Obrachaidh

6.1. Switch Taghadh Modh

The adapter features a mode selection switch to choose between different serial communication protocols. Carefully set the switch to the desired mode before connecting to your device.

Close-up of the WitMotion 6-in-1 Serial Adapter showing the mode switch, CP2102 chipset, TO5 fuse, and LED indicators.

Image: Close-up of the adapter's components, including the mode switch.

6.2. Comharran LED

The adapter is equipped with LED indicators to show its working status:

  • LED buidhe: Indicates USB power/connection status.
  • Green RX LED: Flashes when data is being received.
  • Red TX LED: Flashes when data is being transmitted.

6.3. Ceangal Examples

The following diagrams illustrate common connection scenarios for various serial communication types:

Diagrams showing various connection configurations for USB-TTL, USB-RS232, USB-RS485, TTL-232, TTL-485, and 232-485 conversions.

Image: Detailed connection diagrams for different serial communication modes.

  • USB to TTL: Connect the adapter's TX, RX, and GND pins to the corresponding RX, TX, and GND pins of your TTL device.
  • USB to RS232: Use the 232T, 232R, and GND pins for RS232 communication.
  • USB to RS485: Connect the A and B pins for RS485 communication.
  • TTL to RS232/RS485, 232 to 485: For these conversions, ensure the adapter receives power from the USB port or an external VCC/GND pin. Connect the respective TX/RX or A/B lines between the devices. Note that for direct TTL-232/485 or 232-485 conversions, the USB connection is primarily for power, not direct data interaction with the PC.

7. A ’dèanamh trioblaid

If you encounter issues while using the WitMotion 6-in-1 Serial Adapter, consider the following troubleshooting steps:

  • Driver Not Recognized: Ensure the CP2102 driver is correctly installed. Try reinstalling the driver or connecting the adapter to a different USB port.
  • Gun Tar-chur/Gabhaltas Dàta:
    • Verify that the mode selection switch is set to the correct protocol (TTL, RS232, or RS485).
    • Check all wiring connections for correctness and ensure they are secure.
    • Confirm that the baud rate settings on both the adapter and your target device match.
    • Observe the RX/TX LEDs. If they are not flashing during data transfer, there might be a connection or configuration issue.
  • Cùisean cumhachd: Ensure the adapter is receiving sufficient power from the USB port. The yellow USB LED should be illuminated.
  • Rèiteachadh bathar-bog: Double-check your serial terminal software or development environment settings (COM port, baud rate, data bits, parity, stop bits).

For further assistance, refer to the tutorials available on the WitMotion weblàrach (www.wit-motion.com) or YouTube channel (www.youtube.com/c/WITMOTION). You can also contact our support team at taic@wit-motion.com.

8. Sònrachaidhean

Sònrachadh Luach
Brand WITMOTION
Modail Àireamh cp2102 module
Eadar-aghaidh bathar-cruaidh USB
Ìre Baud 300 bps ~ 1.5 Mbps
Co-fhreagarrachd siostam-obrachaidh Windows XP / 7 / 8 / 10 (32bit / 64bit), Linux, Wince, Mac, Vista
UPC 680904597570

9. Barantas agus Taic

WitMotion provides a Barantas càileachd 12 mìosan for this product. If you have any questions or require technical assistance, please utilize the following resources:

  • Clasaichean-teagaisg air-loidhne: Comprehensive guides and video tutorials are available on our official website and YouTube channel. Links are provided on the welcome card included in your package.
  • Taic Post-d: For direct technical support, please contact us at taic@wit-motion.com. Our team is dedicated to providing satisfactory service and solutions.

© 2026 WitMotion. All rights reserved.

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