ALLNET 4duino Screw Shield V2 Expansion Board

The ALLNET 4duino Screw Shield V2 Expansion Board (ALL_OY_2106) is a high-quality expansion shield designed for Arduino boards with standard R3 pinout, including UNO R3, Leonardo, Mega 2560, and Due. It provides solder-free screw terminals for all major I/O and power pins, making it ideal for prototyping, industrial control, and permanent installations where reliable connections are essential.

Advantages

This screw shield eliminates the need for soldering, allowing quick and secure connections with standard screwdrivers. The clearly labeled terminals reduce wiring errors, and the stackable design enables the use of additional shields on top. The onboard reset button and power LED provide convenient control and status indication.

Suitable for

• Prototyping and breadboard alternatives
• Industrial control and automation projects
• Permanent sensor and actuator wiring
• Educational environments and workshops

Key specifications

• Board Type: Expansion Shield
• Compatibility: Arduino UNO R3, Leonardo, Mega 2560, Due (standard R3 pinout)
• Terminal Type: Screw Terminals
• Number of Digital I/O Terminals: 14 (D0-D13)
• Number of Analog Input Terminals: 6 (A0-A5)
• Power Supply Terminals: 5V, 3.3V, VIN, GND (multiple)
• Special Function Terminals: IOREF, AREF, Reset
• Total Screw Terminals: Approx. 29
• Terminal Pitch: 3.5mm
• Onboard Reset Button: Yes
• LED Indicators: Power LED
• Pin Labeling: Clearly marked
• Mounting Holes: Standard Arduino mounting pattern
• Stackable Design: Yes
• Material: FR-4 PCB
• Operating Voltage: 5V (from host Arduino)

Recommendations

For best results, use stranded wires with a ferrule or solid wires of appropriate gauge (0.5-1.5 mm²). Ensure the screw terminals are tightened securely but not over-torqued. This shield is compatible with most Arduino shields that follow the standard R3 layout.