FT232RL USB TO UART TTL 5V 3.3V Adapter Module For Arduino
₹100.30 incl. GST (₹85.00 + GST)
The USB to UART TTL FT232RL Adapter Module is a compact and reliable solution for connecting Arduino boards, microcontrollers, and TTL-based devices to a computer via USB. Built around the FT232RL IC, it supports 3.3V and 5V logic levels and features a DTR pin for automatic reset during programming. With a Mini USB interface, FTDI-compatible pinout, and up to 500mA current output, it is ideal for Arduino programming, UART debugging, firmware flashing, GPS/GSM interfacing, and electronics prototyping. Images are for representation only; the actual product may vary slightly in appearance.
USB to UART TTL FT232RL Adapter Module
The USB to UART TTL FT232RL Adapter Module is a compact and reliable USB-to-serial communication module designed for connecting Arduino boards, microcontrollers, development boards, and other TTL-based devices to a computer. Built around the FTDI FT232RL IC (Revision 2), it provides stable and reliable serial communication for programming, debugging, firmware flashing, and data transfer.
The module supports both 3.3V and 5V logic levels, making it suitable for a wide range of embedded systems and microcontroller platforms. Its DTR pin supports automatic reset, which is especially useful when programming boards such as the Arduino Pro Mini, allowing the connected board to reset automatically during code uploading.
The module uses a Mini USB interface and follows a standard FTDI-style pinout for convenient integration. Clearly marked BLK (GND) and GRN (CTS) pins help users correctly align the module with compatible FTDI cables and development boards.
With its compact 36mm × 18mm form factor and up to 500mA current output, this adapter is a useful tool for electronics development, robotics, embedded programming, and serial communication applications.
Features
- USB to UART TTL serial adapter module
- Built around the FTDI FT232RL IC (Rev. 2)
- Supports reliable USB-to-TTL serial communication
- Supports 3.3V and 5V operation
- Selectable 3.3V and 5V logic levels
- DTR pin for automatic reset
- Useful for Arduino Pro Mini programming
- Mini USB interface
- Standard FTDI-style pinout
- Clearly labelled connection pins
- BLK and GRN pin identification
- Up to 500mA maximum current
- Compact and lightweight design
- Suitable for embedded development
- Useful for UART debugging and firmware flashing
- Suitable for robotics and electronics projects
- Ideal for DIY and prototyping applications
Specifications
| Parameter | Specification |
|---|---|
| Product Type | USB to UART TTL FT232RL Adapter Module |
| USB-to-Serial IC | FT232RL |
| IC Revision | Rev. 2 |
| Interface | Mini USB |
| Operating Voltage | 3.3V / 5V |
| Logic Level | 3.3V / 5V |
| Maximum Current | 500mA |
| Reset Feature | DTR Auto Reset |
| Pinout | FTDI Compatible |
| Dimensions | 36mm × 18mm |
| Country of Origin | China |
Design and Construction
The USB to UART TTL FT232RL Adapter Module features a compact PCB design intended for easy integration into electronics and embedded-system projects. The board uses the FT232RL USB-to-UART interface IC to convert USB signals from a computer into TTL-level serial signals that can be understood by compatible microcontrollers.
The module provides clearly marked connection pins to simplify wiring. Its 3.3V and 5V support provides flexibility when working with different development boards and logic-level requirements.
The integrated DTR connection allows compatible boards to perform an automatic reset during programming. This makes the module particularly convenient for boards such as the Arduino Pro Mini and other systems that use serial bootloaders.
Its compact 36mm × 18mm size makes it suitable for development boards, robotics projects, embedded systems, and portable prototypes.
Pinout and Connections
The module follows a standard FTDI-style pin configuration for convenient connection to compatible development boards.
Typical connections include:
- VCC – Power supply
- GND / BLK – Ground
- TXD – UART transmit
- RXD – UART receive
- DTR – Automatic reset control
- CTS / GRN – Clear-to-send connection
Always verify the pinout and voltage requirements of the target device before making connections.
Working Principle
The FT232RL Adapter Module acts as a bridge between a computer’s USB interface and a microcontroller’s TTL UART interface.
When connected to a computer through the Mini USB port, the FT232RL converts USB data into UART serial data. The TXD and RXD pins then communicate with the connected microcontroller or embedded device.
During programming, the DTR pin can provide an automatic reset signal to compatible boards. This allows the bootloader to start automatically when code is uploaded, eliminating the need to manually press the reset button in supported applications.
The module can also be used for receiving serial data from microcontrollers and displaying or logging that data on a computer.
Applications
- Arduino Pro Mini programming
- Arduino and compatible board programming
- Microcontroller programming
- UART debugging
- Serial communication
- Firmware flashing
- Embedded system development
- GPS module interfacing
- GSM module interfacing
- Sensor module communication
- ESP and other TTL UART devices
- Robotics projects
- DIY electronics projects
- Serial terminal communication
- Embedded-system prototyping
- Development and testing
- Computer-to-microcontroller communication
Package Includes
- 1 × USB to UART TTL FT232RL Adapter Module
Product Disclaimer
Product images are shown for illustrative and representational purposes only. The actual product may vary slightly in colour, component placement, PCB markings, dimensions, or overall appearance depending on the manufacturing batch.
USB cable, Arduino board, microcontroller, sensors, and other components shown in product images are not included unless specifically mentioned in the package contents.
Before connecting the module, verify the required logic voltage and pin configuration of your target device to prevent possible damage.
Frequently Asked Questions (FAQs)
1. What is the USB to UART TTL FT232RL Adapter Module used for?
It is used to connect computers to Arduino boards, microcontrollers, and other devices that communicate using TTL UART serial communication.
2. What USB-to-serial IC is used in this module?
The module uses the FTDI FT232RL IC (Revision 2) for USB-to-UART conversion.
3. Does the module support both 3.3V and 5V devices?
Yes. The module supports 3.3V and 5V operation and logic levels, making it suitable for different embedded systems.
4. What is the purpose of the DTR pin?
The DTR pin provides an automatic reset signal to compatible development boards, which is useful when uploading programs.
5. Can I program an Arduino Pro Mini with this module?
Yes. It is commonly used to program Arduino Pro Mini boards and other compatible boards with serial bootloaders.
6. What type of USB connector does the module use?
The module uses a Mini USB interface for connecting to a computer.
7. What is the maximum current output?
The module can provide up to 500mA maximum current, depending on the connected USB source and operating conditions.
8. What are the main UART communication pins?
The primary UART pins are TXD (Transmit) and RXD (Receive). These are used for serial data communication with the target device.
9. What is the BLK pin?
The BLK pin is the ground (GND) connection and is typically used as the black-wire reference in FTDI-style connections.
10. What is the GRN pin?
The GRN pin corresponds to the CTS (Clear To Send) connection in the FTDI-style pinout.
11. Is this module compatible with standard FTDI cables?
Yes. Its pinout is designed to match standard FTDI-style cable connections, but users should always verify the target device's pinout before connecting.
12. Can this module be used for UART debugging?
Yes. It can be used to monitor and communicate with UART-enabled microcontrollers and embedded devices through a computer serial terminal.
13. Can I use it for firmware flashing?
Yes. It can be used for firmware uploading or flashing on compatible devices that support programming through TTL UART.
14. Can this module be used with GPS modules?
Yes. It can be used to communicate between a computer and compatible GPS modules through their TTL UART interface.
15. Can it be used with GSM modules?
Yes. It can be used for serial communication and configuration of compatible GSM modules with TTL UART interfaces.
16. Can I use this module for sensor interfacing?
Yes. Compatible sensors and modules that provide TTL UART communication can be connected for testing, configuration, and data monitoring.
17. Is this module suitable for Arduino projects?
Yes. It is suitable for Arduino programming, serial monitoring, debugging, and communication projects.
18. Can it be used in robotics projects?
Yes. It is useful for programming and debugging robotic controllers, UART-enabled modules, GPS units, GSM modules, and other embedded components.
19. What are the dimensions of the module?
The module measures approximately 36mm × 18mm.
20. What voltage should I select for my device?
Select the voltage that matches the target device's required logic level and power requirements. Always verify the device specifications before connecting.
21. Does the module require external power?
The module can receive power through its Mini USB connection. The available output power depends on the USB source and the connected load.
22. Does the module automatically reset every microcontroller?
No. The automatic reset feature works with compatible boards that support the appropriate DTR-based reset arrangement.
23. Can TXD and RXD be connected directly?
For standard UART communication, the adapter's TXD should connect to the target device's RXD, and the adapter's RXD should connect to the target device's TXD, with a common GND.
24. Is the USB cable included?
No. The USB cable is not included unless specifically mentioned in the package contents.
25. Is the Arduino board included?
No. Arduino boards and other development boards shown in product images are not included unless specifically stated.
26. Is this module suitable for beginners?
Yes. Its clearly labelled pins and simple USB-to-UART functionality make it useful for beginners, students, hobbyists, and electronics developers.
27. What is the country of origin of the module?
The stated country of origin is China.
28. What should I check before connecting the module?
Verify the target device's voltage, UART pinout, TX/RX connections, GND connection, and logic-level requirements before powering or communicating with the device.
29. Does the module support serial data transfer in both directions?
Yes. The TXD and RXD connections support bidirectional UART serial communication between the computer and compatible target device.
30. Does the actual product look exactly like the image?
Not necessarily. Product images are for representation only, and the actual module may vary slightly in appearance, PCB markings, component placement, or finish depending on the manufacturing batch.
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