Arduino Sensor Shield V4.0 I/O Expansion Board

ARDUINO COMPATIBLE SENSOR SHIELD V4.0 is a compact and reliable expansion shield designed for Arduino UNO, Leonardo, Mega, and compatible microcontroller platforms. It breaks out digital and analog I/O lines into standardized 3-pin Buckled sensor connectors, enabling direct and secure connection of analog sensors, digital actuators, servos, and I2C LCD modules without manual breadboard soldering.

Key Features:

• Buckled 3-Pin Connectors: 6 dedicated 3-pin analog ports (Signal, 5V, GND) providing secure, vibration-resistant connections.
• Servo Ready Headers: 12 dedicated digital servo pin headers (D0 to D13) equipped with parallel power and ground rails.
• Selectable I2C / UART Interface: 4-pin buckled communication interface with onboard jumper for switching between I2C and serial UART devices.
• Auxiliary Analog Headers: 6 additional auxiliary pin headers routing analog channels A0 to A5 for flexible external wiring.
• Onboard Reset: Integrated tactile reset button accessible even when sensors are plugged in.
• Stackable Architecture: Standard Arduino female pass-through headers permit mounting further expansion boards.

Technical Specifications:

• Operating Voltage: 5V DC supplied from Arduino host board
• Digital I/O Channels: 12 digital channels with power and ground rails
• Analog Input Channels: 6 channels (A0 to A5) on buckled 3-pin connectors and auxiliary headers
• Serial Interface: 4-pin buckled interface selectable via jumper (I2C: SDA/SCL or UART: TX/RX)
• Connector Type: 2.54mm pitch standard headers and keyed latching headers
• Current Capacity: Limited by Arduino 5V regulator; external power recommended for multiple high-load servos
• Indicators: Power status LED and hardware reset button

Mechanical Specifications:

• Form Factor: Arduino UNO R3 standard shield profile
• PCB Construction: Double-sided FR4 with green solder mask and white silkscreen
• Mounting: Direct plug-in stack to host Arduino headers
• Connector Pitch: 2.54mm (0.1 in) standard pitch
• Weight: Approximately 26 g

Dimensions:

• Overall Length: 69.0 mm
• Overall Width: 54.0 mm
• Overall Height: 18.0 mm

Pinout and Wiring:

• Analog Ports (A0–A5): 3-pin buckled headers wired as [Signal / +5V / GND]
• Digital Ports (D0–D13): 3-pin male headers arranged as [Signal / +5V / GND]
• I2C / UART Port: 4-pin buckled header configured via jumper selection
• Aux Analog Breakout: 6-pin auxiliary header providing raw A0–A5 pin access
• ICSP Header: Pass-through 6-pin ISP connector for SPI hardware connections

Datasheet Reference:

• Consult the Arduino Sensor Shield V4.0 schematic and hardware user manual for connector pin order, jumper configuration details, and current limits.

Commonly Used in:

• RC servo multi-channel controllers and pan-tilt mechanisms
• Educational robotics workshops and introductory STEM electronics kits
• Sensor interfacing projects involving ultrasonic, light, and temperature modules
• Prototyping custom sensor networks before PCB fabrication

Applications:

• Robotic gripper and servo motor control
• Multi-channel analog sensor monitoring
• I2C display and sensor interfacing
• Rapid embedded systems breadboard-less prototyping
• Industrial telemetry bench-testing

Equivalent Models:

• Arduino Sensor Shield V5.0 (upgraded revision with APC220/Bluetooth headers)
• DFRobot IO Expansion Shield V5
• Funduino V4 Shield for Arduino
• Keyestudio Sensor Shield V4

Package Includes:

• 1 × ARDUINO COMPATIBLE SENSOR SHIELD V4.0