FTDI FT232RL USB to TTL Serial Adapter

FTDI FT232RL USB to TTL Serial Adapter Module

Bridge the gap between your computer and microcontrollers with this high-performance FTDI FT232RL USB to TTL Serial Adapter. Whether you are debugging a router, programming an Arduino Pro Mini, flashing firmware on an ESP8266/ESP32, or interfacing with custom hardware, this module provides stable, reliable asynchronous serial communication (UART) directly over USB.

Equipped with the industry-standard FT232RL chip, this breakout board handles all the complex USB signaling and protocol translation, exposing a simple, easy-to-use serial interface.

Key Features

• Dual Voltage Support ($3.3\text{V}$ & $5\text{V}$): Easily switch between $3.3\text{V}$ and $5\text{V}$ logic levels using the onboard jumper toggle, making it compatible with both standard Arduinos and modern low-voltage microcontrollers.

• Standard 6-Pin Layout: Out of the box, the pinout features DTR, RXD, TXD, VCC, CTS, and GND, allowing for direct plug-and-play connection to Arduino boards for auto-reset programming.

• LED Status Indicators: Features onboard Power, TX (transmit), and RX (receive) LEDs so you can visually monitor data traffic and power status at a glance.

• Over-Current Protection: Includes an integrated $500\text{mA}$ self-restoring fuse to protect your computer’s USB port from accidental shorts and current overloads.

Specifications

• Chipset: FTDI FT232RL

• Input Interface: USB Mini-B (or Micro-USB, depending on your stock)

• Output Interface: TTL Serial (Header pins)

• Logic Levels: $3.3\text{V}$ or $5\text{V}$ (Jumper selectable)

• Pin Definition: DTR, RX, TX, VCC, CTS, GND

• Supported Operating Systems: Windows, macOS, Linux, and Android

Common Applications

• Programming Arduino Pro Mini, LillyPad, or custom AVR chips.

• Flashing firmware on WiFi/Bluetooth modules (ESP8266, ESP32, HC-05).

• Accessing the serial console on network equipment, routers, and single-board computers like the Raspberry Pi.

• Unbricking consumer electronics and smart-home appliances.

Note: Please ensure you cross-connect the data pins (TX to RX and RX to TX) when wiring this module to your target microcontroller.