Gravity IO Expansion Shield V7.1 for Arduino – DFRobot

Tired of messy wires or breadboard chaos when prototyping with Arduino? The Gravity IO Expansion Shield for Arduino V7.1 provides a clean, modular, and beginner-friendly solution. Designed by DFRobot, this shield supports plug-and-play connectivity with Gravity modules, using clearly labeled ports and color-coded headers for analog, digital, and I2C interfaces. As a core component of the DFRobot Gravity ecosystem, this IO expansion shield simplifies complex wiring for any Arduino project.

Fully compatible with Arduino UNO R3 and UNO R4, this Gravity IO Expansion Shield allows seamless integration of wireless modules (like Xbee, Bluetooth, RS485), servo power management, and even SD card communication. Even if you are not using Gravity modules, this DFRobot Arduino shield is compatible with standard DuPont jumper wires for maximum flexibility.

Key Features of Gravity IO Expansion Shield

• 3.3V / 5V voltage select for wide Arduino sensor compatibility
• UART toggle switch to enable programming and communication modes on your Arduino board
• Clearly labeled, color-coded ports for fast and accurate wiring with DFRobot Gravity sensors
• Compatible with Xbee, RS485, URM04, APC220, and more via the onboard expansion slots
• Gold-plated PCB surface for long-term reliability in professional Arduino prototyping
• Enhances expansion capability of your Arduino projects with the trusted DFRobot design

Specifications

Board Overview

• SD card slot for Arduino data logging
• I2C port for Gravity I2C sensors
• UART toggle switch for easy Arduino code uploading
• Analog and digital interface rows with Gravity color-coding
• Bluetooth/Xbee slot for wireless Arduino communication
• External power terminal for high-current servos
• RS485 interface and jumper switch for industrial Arduino applications

Shipping List

• 1 Gravity IO Expansion Shield for Arduino V7.1 by DFRobot

Project Applications with DFRobot & Arduino

This Gravity IO Expansion Shield is used in many real-world Arduino projects, including:

1. 2M MechaGodzilla Armor Suit (with EVA & Gears) Build wearable robotic suits using this DFRobot shield for servo control

2. Spectrophotometer with AS7341 Sensor Conduct experiments using Arduino and Gravity optical sensors

3. Smart Rock-Paper-Scissors Robot Build a reactive Arduino robot using the Gravity IO Expansion Shield

4. Automatic Water Quality Monitor (KnowFlow) Monitor pH and EC with your Arduino and DFRobot expansion system

5. Automatic Water-Changing System Combine Arduino sensors and pumps for environmental automation

Compatible with Other DFRobot Development Boards

If you’re using ESP32, micro:bit, or Raspberry Pi Pico, DFRobot offers tailored Gravity IO expansion boards:

• Arduino Mega 2560: Gravity IO Sensor Shield for Mega

• micro:bit: Gravity IO Extender for micro:bit

• Raspberry Pi Pico: Gravity IO Expansion Board for Pico

• FireBeetle 2 ESP32-E: Gravity IO Shield for FireBeetle 2

Reference

Gravity IO Expansion Shield Wiki Doc

Schematic PDF