Parallax 28030 USB to Serial (RS-232) Adapter

The Parallax 28030 is a professional-grade USB to RS-232 serial adapter that enables seamless communication between modern USB-equipped computers and legacy serial devices using standard DB-9 connectors. Embedded systems engineers, microcontroller developers, and industrial automation technicians rely on this adapter to program and debug Parallax microcontrollers, establish communication with legacy industrial equipment, and interface with serial-based sensors and instruments. This adapter solves the critical problem of connecting contemporary computers lacking native serial ports to RS-232 devices, eliminating the need for expensive multi-port expansion cards or obsolete hardware.

Product Overview

The Parallax 28030 USB to Serial adapter operates on the principle of USB protocol translation, converting USB signaling to standard RS-232 voltage levels and timing specifications. The adapter features an integrated FTDI chipset that handles the complex protocol conversion, ensuring reliable bidirectional communication at baud rates up to 921.6 kbps. This model is specifically engineered for Parallax development platforms, including the BASIC Stamp and Propeller microcontroller families, making it an essential tool for embedded systems development. The adapter maintains full compatibility with Windows, macOS, and Linux operating systems through universal FTDI drivers, ensuring cross-platform functionality without proprietary software dependencies.

The 28030 adapter excels in educational and professional environments where serial debugging and firmware programming are critical. Its robust design incorporates proper ESD protection, signal conditioning, and voltage regulation to maintain signal integrity even in noisy industrial environments. The compact form factor and integrated cable management make it suitable for both benchtop development and field troubleshooting applications. The adapter's status LEDs provide real-time visual feedback on power and data transmission, enabling quick diagnostics of communication issues without requiring software monitoring.

Key Specifications

Specification	Details
Product Type	USB to RS-232 Serial Adapter
Brand	Parallax Inc.
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
USB Interface	USB 2.0 Type-A Full Speed
Serial Interface	DB-9 Female RS-232
Baud Rate Range	300 bps to 921.6 kbps
Data Bits	5, 6, 7, or 8 bits
Stop Bits	1, 1.5, or 2 bits
Parity Support	None, Odd, Even, Mark, Space
Chipset	FTDI FT232RL
Operating Voltage	5V USB powered
Cable Length	Integrated 6-foot USB cable

Key Features

• FTDI FT232RL chipset providing reliable USB to RS-232 protocol conversion with support for baud rates from 300 bps to 921.6 kbps for high-speed serial communication
• Integrated 6-foot USB cable with compact connector design, eliminating the need for separate cables and reducing cable clutter in development environments
• Dual status LEDs indicating power supply and data transmission activity, enabling quick visual diagnostics without requiring terminal software
• Full software flow control and hardware handshaking support including RTS/CTS and DTR/DSR signals for reliable data transfer with legacy equipment
• Universal driver compatibility with Windows, macOS, and Linux platforms through standard FTDI Virtual COM Port drivers
• ESD protection and signal conditioning circuitry protecting connected devices from electrostatic discharge and noise interference in industrial environments

Applications and Use Cases

• Parallax BASIC Stamp and Propeller microcontroller programming and debugging via USB ports on modern laptops and desktop computers without native serial ports
• Industrial equipment communication including legacy PLCs, motor controllers, and SCADA systems that utilize RS-232 serial protocols for configuration and monitoring
• Scientific instrument interfacing with oscilloscopes, multimeters, function generators, and data acquisition systems that communicate exclusively through RS-232 serial connections
• Embedded systems development and firmware upload for custom serial-based devices, GPS modules, GSM modems, and sensor interfaces in IoT and robotics projects
• Point-of-sale terminal integration and barcode scanner connectivity in retail environments where legacy serial devices require USB-equipped modern computers

How to Use

Installation of the Parallax 28030 adapter begins with downloading and installing the appropriate FTDI Virtual COM Port driver for your operating system from the official FTDI website. Connect the USB Type-A connector to an available USB port on your computer, and the adapter will enumerate as a virtual COM port within 2-3 seconds. Connect your RS-232 device to the DB-9 female connector on the adapter using a standard serial cable, ensuring proper pin alignment and secure connection. The green power LED will illuminate immediately upon USB connection, while the yellow data LED will flash during active serial communication.

Configure your serial communication software to use the assigned virtual COM port at the appropriate baud rate matching your target device specifications. For Parallax microcontroller programming, the Parallax IDE will automatically detect the adapter and configure the correct COM port and baud rate settings. Verify proper communication by observing the data LED activity during transmission and reception. If communication fails, confirm that the correct baud rate, data bits, stop bits, and parity settings match your target device specifications exactly. For troubleshooting, check Device Manager on Windows or System Information on macOS to verify the adapter has enumerated correctly as a COM port device.

Frequently Asked Questions

Is the Parallax 28030 compatible with non-Parallax serial devices?

Yes, the Parallax 28030 is fully compatible with any RS-232 device that uses standard DB-9 connectors. While optimized for Parallax microcontrollers, it works equally well with industrial equipment, scientific instruments, legacy computers, and any serial-based device requiring RS-232 communication protocols. The FTDI chipset provides universal RS-232 compatibility regardless of the target device manufacturer.

What driver do I need to install for the Parallax 28030?

The Parallax 28030 uses the FTDI FT232RL chipset and requires the FTDI Virtual COM Port driver for your operating system. Download the latest driver from ftdichip.com and install it before connecting the adapter. Windows, macOS, and Linux all have universal drivers available. Most modern operating systems automatically detect and install the driver upon first connection, though manual installation ensures optimal compatibility and performance.

Can I use multiple Parallax 28030 adapters simultaneously on one computer?

Yes, you can connect multiple Parallax 28030 adapters to a single computer, and each will enumerate as a separate virtual COM port. This is useful for simultaneously programming multiple microcontrollers or communicating with multiple serial devices. Each adapter will receive a unique COM port number assigned by the operating system, allowing your software to address each device independently through its designated port.

Does the adapter support hardware flow control?

Yes, the Parallax 28030 fully supports both hardware flow control using RTS/CTS signals and software flow control using XON/XOFF characters. This ensures reliable data transfer with devices that require flow control mechanisms to prevent data loss during high-speed serial communication or when the receiving device buffer is full.

What is the maximum baud rate supported by the Parallax 28030?

The adapter supports baud rates up to 921.6 kbps, which covers all standard serial communication speeds from 300 bps to 115200 bps and beyond. This high-speed capability ensures compatibility with modern serial devices while maintaining backward compatibility with legacy equipment operating at lower baud rates.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
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• Returns: 7-day return policy on manufacturing defects only

Buy Parallax 28030 USB to Serial (RS-232) Adapter Online in India

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