The PL2303 USB to TTL (UART) Converter Module is the essential bridge between your computer and your microcontroller projects. At Electrapac, we provide this compact Micro USB module to help you program, debug, and communicate with devices that don't have a built-in USB port.

Product Overview

This module utilizes the Prolific PL2303 chipset to convert USB signals into TTL (Transistor-Transistor Logic) serial data. It features a Micro USB port, allowing you to use a standard smartphone cable to connect your PC to an Arduino Pro Mini, ESP8266, Raspberry Pi, or even industrial GPS and GSM modules. It is the go-to tool for "unbricking" routers or uploading firmware to DIY electronics.

Key Features for Electrapac Customers

• Dual Power Output: The module provides both 3.3V and 5V power pins, allowing you to power your target device directly from the USB port without an external power supply.

• Status Indicator LEDs: Includes onboard TX and RX LEDs that flash during data transmission, making it easy to see if your communication is working.

• Safety First: Equipped with a 500mA self-recovery fuse to protect your computer's USB port from accidental short circuits in your project.

• Transparent Heat Shrink: Comes pre-protected with high-quality transparent heat-shrink tubing, preventing dust or stray wires from shorting the board while keeping the components visible.

• Micro USB Convenience: No need for special "Printer Cables" (USB Type-B); just use the common Micro USB cable you already have at home.

Wiring & Connection Guide

To use this module from www.electrapac.com, remember the "Serial Cross" rule:

1. TXD (Module) - RXD (Target): The transmit pin of the converter goes to the receive pin of the device.

2. RXD (Module) - TXD (Target): The receive pin of the converter goes to the transmit pin of the device.

3. GND - GND: Must share a common ground.

4. VCC: Connect either the 3.3V or 5V pin to your device (check your device's voltage rating first!).

Driver Note: For Windows 10/11 users, ensure you install the correct Prolific drivers to avoid "Code 10" errors. This module works seamlessly with Linux and macOS.

Primary Applications

• Programming Pro Mini: Uploading sketches to Arduino boards that lack an onboard USB-to-Serial chip.

• Debugging ESP8266/ESP32: Viewing Serial Monitor logs from Wi-Fi modules.

• Router/Modem Repair: Accessing the "Console" or "Serial" port of networking equipment to flash firmware.

• GPS/GSM Interfacing: Configuring and testing GPS modules or SIM800L GSM modules via AT commands.

• Data Logging: Sending sensor data from your project directly to a terminal program (like PuTTY or Arduino Serial Monitor) on your PC.

Why Shop at Electrapac?

We source our PL2303 Modules with genuine high-grade oscillators to ensure stable data transmission at high baud rates without data corruption. At www.electrapac.com, we provide the communication tools that keep your hardware and software in perfect sync.