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  • USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
  • USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
  • USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
  • USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
  • USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
  • USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine
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USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine

  • 25 - 100 Pieces
    $0.47
  • 101 - 1000 Pieces
    $0.44
  • 1001 - 3000 Pieces
    $0.43
  • >= 3001 Pieces
    $0.42

Customization:

Customized logo（Min.Order: 100 pieces）
Customized packaging（Min.Order: 100 pieces）
Graphic customization（Min.Order: 100 pieces）
View product details

USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • USB to Serial Communication: Converts USB signals to TTL-level UART serial (RS-232) for device interfacing, enabling communication between computers and embedded systems.
  • STC Microcontroller Programming: Serves as a programmer for STC microcontrollers, simplifying firmware uploads and debugging in development workflows.

Key features

  • 1. Durable Material Technology

    • With a corrosion-resistant metallic USB connector and high-quality FR4 PCB material, ensure long-lasting reliability in educational projects and frequent use.

  • 2. Programmable Interactive Design

    • With customizable firmware and support for adjustable baud rates/data formats, configure communication parameters to match specific microcontroller or project requirements.

  • 3. High-Performance Serial Communication

    • Supports faster data transfer speeds compared to legacy PL2303 modules*, enabling seamless connectivity for real-time applications in school labs or embedded systems.

  • 4. Compact Scenario Solutions for Education

    • Designed with a portable form factor, easily integrate into school projects, microcontroller programming (e.g., STC), or IoT setups without requiring bulky hardware.

  • 5. Cross-Platform Compatibility Certification

    • Certified for plug-and-play compatibility with Windows, Linux, and macOS*, simplifying setup for diverse educational environments.

Product details

USB to TTL / USB-TTL / STC Microcontroller Programmer / PL2303 module upgrade board in nine

The USB to TTL/USB-TTL/STC Microcontroller Programmer/PL2303 module upgrade board bridges USB connectivity to serial (UART) interfaces, enabling seamless communication between modern devices and legacy or embedded systems. Designed for compactness and versatility, it supports educational projects, IoT prototyping, and microcontroller programming with industry-standard compatibility.

Technical specifications

FeatureSpecificationBenefit
MaterialFR4 PCB with blue solder maskDurable, heat-resistant construction
ConnectorsUSB Type-A + 5-pin headerUniversal interface compatibility
CommunicationUSB-to-UART protocol (PL2303 chipset)Reliable serial data transfer at 3.3V/5V TTL
Power Supply5V DC via USB or external powerSimplified integration into projects
Software SupportWindows/Linux/macOS (driver required)Cross-platform usability
Form Factor40mm x 15mmCompact design for space-constrained builds

Customization guide

Adjust firmware parameters (e.g., baud rate, parity bits) or replace the microcontroller to meet specialized requirements like high-speed data logging or industrial-grade voltage tolerance.

Get inspired

Ideal for school labs and maker projects, this module simplifies serial communication for Arduino, Raspberry Pi, or STM32 development. Pair it with sensors or microcontrollers to build IoT devices, robotics, or embedded systems.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Baud Rate115.2 kbps1 Mbps3 Mbps*
Voltage Tolerance3.3V/5V3.3V–12V1.8V–15V
Firmware FlexibilityFixed protocolAdjustable via SDKCustom bootloader
CertificationsRoHSRoHS + FCCRoHS + CE + IP67

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s 15V voltage tolerance enables safe operation in industrial environments with fluctuating power supplies.
    • Custom bootloader support (Pro) allows users to reprogram the module for unique protocols, reducing dependency on proprietary hardware.
    • 3 Mbps data speed (Advanced/Pro) outperforms legacy adapters by 20%, ideal for high-throughput applications like drone telemetry.

  2. Version Selection Guidance:

    • Educators/Students: Base Model suffices for basic Arduino/ESP32 projects requiring standard 115.2 kbps communication.
    • IoT Developers: Advanced Model’s adjustable firmware and 1 Mbps speed suit smart home automation and sensor networks.
    • Industrial Users: Pro Model’s rugged certifications and 15V tolerance are critical for robotics, automotive testing, or outdoor deployments.

With the Pro Model’s expanded voltage range, you can safely interface with industrial sensors without additional regulators. With its 3 Mbps speed, you can transmit high-resolution sensor data 20% faster than traditional adapters.

Frequently asked questions

  • Which USB to TTL adapter is best suited for school electronics projects?

  • How do I maintain the USB connector on a USB-TTL module for long-term use in schools?

  • Can this PL2303 module be customized for Arduino or microcontroller programming in educational settings?

  • Is the USB-to-serial module certified for compatibility with school IT systems?

  • Does the USB-TTL adapter support RS-232 communication for industrial education projects?

  • What power requirements does the USB to UART module have for classroom use?

  • How do I troubleshoot driver issues for the USB-TTL module on school computers?

  • Why choose this UART adapter over others for educational robotics projects?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
USB-TTL AdapterEducational labs, hobbyist projectsSupports 3.3V/5V logic (adjustable via jumper) ▲
USB 2.0 Full-Speed (12 Mbps)
5V/500mA power (USB-powered)		Flexible voltage for microcontrollers
Budget-friendly ▲▲
Universal compatibility		Requires manual configuration
Limited to basic serial protocols
PL2303-Based AdapterBudget devices, simple IoT setupsPL2303 chipset ▲
USB 2.0 Full-Speed (12 Mbps)
5V/500mA		Low cost ▲▲▲
Widely available		macOS driver issues
Less reliable than FTDI ▲▲▲ (vs FTDI's stability)
CH340-Based AdapterArduino clones, prototypingCH340 chipset ▲
USB 2.0 (921.6 Kbps)
5V/500mA		Cheapest option ▲▲▲
Arduino-compatible		Poor driver support
Low speed (921.6 Kbps vs 3 Mbps industry standard) ▲▲▲▲▲
FTDI-Based AdapterIndustrial devices, professional useFTDI chipset (3 Mbps) ▲▲▲
USB 2.0 Hi-Speed (480 Mbps)
5V/500mA		High reliability ▲▲▲
OS-agnostic drivers
Fast data transfer (3 Mbps)		Higher cost ▲▲▲
Less common in basic projects
Arduino Programmer BoardSchool Arduino projects, prototypingAuto-reset circuit ▲▲
Supports 115200 baud ▲
USB 2.0 Full-Speed		Simplifies programming workflows
Plug-and-play for Arduino boards		Limited to Arduino boards ▲▲▲
No GPIO flexibility
Raspberry Pi Serial AdapterIoT education, Pi-specific projectsGPIO pin compatibility ▲▲
3.3V logic ▲
USB 2.0 Full-Speed		Direct Raspberry Pi integration ▲▲▲
Low power consumption		Not compatible with non-Pi devices ▲▲▲
Niche use case

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