Arduino RS232 Shield

The RS232 Shield for Arduino converts UART to RS232 interface, enabling your Arduino to communicate with industrial equipment, legacy devices, and computers via standard DB9 serial connections. The shield includes a run/program mode switch for easy Arduino programming.

Features gold immersion PCB for durability and a prototyping area for custom circuits. Compatible with Arduino Uno, Mega, and Leonardo boards.

Key Features

• DB9 Connector – Female RS232 interface
• Run/Program Switch – Easy mode switching for programming
• TX/RX LEDs – Visual data transfer indication
• Prototyping Area – Space for custom circuits
• Gold Immersion PCB – Enhanced durability
• Long Pins – Compatible with standard Arduino headers

Specifications

• Operating Voltage: 5V
• Digital I/O: 16 pins (including I2C)
• Analog I/O: 6 pins
• Dimensions: 55 × 53mm

RS232 Cable Length Guidelines

• 19200 baud: Up to 15m (50ft)
• 9600 baud: Up to 150m (500ft)
• 4800 baud: Up to 300m (1000ft)

Compatibility

• Arduino UNO / UNO R3
• Arduino Mega 1280/2560
• Arduino Leonardo

Package Contents

• 1× RS232 Shield

Resources

• DFRobot Wiki
• Schematic (PDF)
• MAX3232 Datasheet (PDF)