CP2102 USB to Serial (USB-UART) TTL Module

The CP2102 USB to Serial (USB-UART) TTL Module provides a dependable bridge between your computer’s USB port and any UART/TTL serial device. Powered by the Silicon Labs CP2102 chipset, it offers fast, stable data transfer and supports a broad range of baud rates, making it perfect for Arduino, ESP8266/ESP32, NodeMCU, and other embedded systems.

With onboard 3.3 V and 5 V output pins, it eliminates the need for external level shifters, ensuring quick and hassle-free programming or debugging.

🔹 Key Features

• Dual Voltage Support: Provides both 3.3 V and 5 V logic levels and power output.

• High-Speed Data Transfer: Supports baud rates from 300 bps to 1 Mbps.

• Cross-Platform Drivers: Works seamlessly with Windows, macOS, and Linux.

• Standard Pinout: TXD, RXD, VCC (3.3 V/5 V), GND, DTR, and RTS for easy wiring.

• Auto-Reset Capability: Simplifies Arduino and ESP flashing without manual reset.

• Compact & Portable: Slim design for easy integration into development setups.

🔹 Technical Specifications

• Chipset: Silicon Labs CP2102

• Interface: USB 2.0 Type-A to TTL Serial

• Logic Voltage: 3.3 V or 5 V selectable

• Operating Current: <70 mA typical

• Baud Rate Range: 300 bps to 1 Mbps

• Operating Temperature: –40 °C to +85 °C

• Dimensions: ~45 mm × 18 mm × 7 mm

• Driver Support: Windows 7/8/10/11, macOS, Linux distributions

🔹 Applications & Use Cases

• Arduino Programming: Upload code to Arduino boards without needing an onboard USB interface.

• ESP & NodeMCU Development: Flash firmware or debug serial output from NodeMCU, ESP8266, or ESP32 boards.

• Embedded Systems Debugging: Monitor UART communication in custom electronics.

• IoT Devices: Interface sensors and controllers with PCs for testing or data logging.

• Prototyping & Robotics: Reliable USB-to-UART connection for automation and robotics projects.

🔹 Advantages for Makers & Engineers

• Works seamlessly with other Electronics Components for rapid prototyping.

• Eliminates the need for external level shifters thanks to built-in 3.3 V/5 V outputs.

• Widely supported drivers ensure a plug-and-play experience across major operating systems.

🔹 Safety & Precautions

• Match the output voltage to the target board to avoid damage.

• Always connect the ground (GND) between the module and the target device.

• Use a regulated Power Supply when powering external circuits.

🔗 Helpful Internal Links

• Explore more Tools and Accessories for cables and testing gear.

• Browse compatible Electronics Components for IoT and embedded projects.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The CP2102 USB to Serial (USB-UART) TTL Module delivers fast, stable USB-to-UART communication with selectable 3.3 V/5 V outputs, making it the perfect tool for Arduino, ESP8266/ESP32, NodeMCU, and other microcontroller programming or debugging tasks.