keyestudio RS232 to TTL Conversion Shield Compatible with Arduino

This keyestudio RS232 to TTL conversion shield is designed specifically for the Arduino UNO R3, allowing you to easily convert your serial port into an RS232 interface. It is perfect for makers, students, and hobbyists looking to interface their microcontroller projects with legacy industrial equipment, computers, or serial peripherals.

Seamless Arduino UNO R3 integration

Designed specifically for the UNO R3 control board, this shield makes it incredibly simple to convert your microcontroller's serial port into a standard RS232 interface. It features a male DB9 connector and an RS232 pin header to facilitate easy debugging and connection to external equipment.

Dedicated programming mode switch

A built-in run/programming switch simplifies your workflow. Toggle the switch to the OFF position to upload code to your UNO R3 without interference, and switch it ON for normal serial communication.

Comprehensive breakout and prototyping space

The shield breaks out 16 digital IO pins (including an I2C pin), 6 analog IO pins, and power connections. It also includes a dedicated prototyping soldering area, allowing you to build custom circuits directly onto the board.

Visual status indicators and reset button

Onboard transmitting and receiving LEDs, along with a D13 status indicator, provide immediate visual feedback on your serial communication. A built-in reset button allows you to restart your controller without removing the shield.

Compact and compliant design

Measuring just 60mm by 53.4mm, this compact shield fits neatly over your Arduino board. It operates on a standard DC 5V power supply and meets RoHS environmental standards.