The IO Expansion Shield is an essential accessory designed exclusively for the Arduino Nano. This shield enhances the Nano's functionality by providing an easy connection to various devices, making it an indispensable tool for both beginners and experienced Arduino enthusiasts. It serves as an easy to connect bridge between the Arduino Nano and numerous components, expanding its capability for a wide range of projects. Compatible with Nano versions v2.x and v3.x, this shield also works harmoniously with the Nano Breadboard.

Specifications:

• 14 I/O Pins: Servo-type pins with GND, power, and signal connections, ideal for controlling servos and other digital devices.
• 8 Analog Pins: Analog pins with power output and GND, perfect for sensor inputs and other analog devices.
• 6 PWM Pins: Pulse Width Modulation pins for controlling motors, LEDs, and other PWM-enabled devices.
• 1 Servo Power Input: Dedicated power input for servos, simplifying the connection and power management of servo motors.
• 5 I2C Expansion Pins: Additional pins for I2C communication, enabling easy expansion and connectivity of I2C devices.
• AREF Output: Provides an Analog Reference output, allowing for more precise analog readings.
• 3.3V Output: A stable 3.3V power output, suitable for powering sensors and other low-power devices.

Pinout

Top Side (Digital I/O Pins)

• D0 (RX) - Digital Pin 0, used for UART communication (receiving data).
• D1 (TX) - Digital Pin 1, used for UART communication (transmitting data).
• D2 to D7 - Digital Pins 2 to 7, general-purpose digital I/O.
• D8 to D13 - Digital Pins 8 to 13, general-purpose digital I/O.

Bottom Side (Power and Analog Pins)

• A0 to A7 - Analog Pins 0 to 7, are `used for reading analog values. Can also be used as digital I/O.
• GND - Ground pin.
• 5V - 5V power output.
• 3.3V - 3.3V power output.
• AREF - Analog Reference pin for the analog inputs.
• VIN - Voltage input (can power the Nano if not connected to USB).

Special Pins

• I2C (SDA, SCL) - Usually mapped to A4 (SDA) and A5 (SCL) for I2C communication.
• PWM (D3, D5, D6, D9, D10, D11) - Digital pins that can be used for PWM output.
• RESET - Resets the Arduino Nano.

IO Shield Special Features

• Servo Power Input - Dedicated connector for powering servos separately from the Nano.
• Additional I2C, UART, and other communication headers - Extra connectors to facilitate easy expansion and communication with other devices.

Package Includes:

• 1 x IO Expansion Shield for Arduino Nano