- Secure Connectivity: High-quality screw terminal blocks for all Arduino I/O pins (Digital, Analog, Power, GND), ensuring reliable and secure wire connections.
- Prototyping Area: Large, double-sided PCB prototyping space with standard 0.1″ (2.54mm) grid for soldering custom through-hole components.
- Stackable Design: Comes with female headers, allowing additional shields to be stacked on top without losing access to the screw terminals.
- On-board Indicators: Includes a power-on LED and an LED connected to digital pin 13.
- Easy Access Reset: A dedicated blue reset button on the shield mirrors the Arduino board’s function for convenience.
- Durable Construction: Made with robust FR4 PCB material and plated vias for longevity.
- Compatibility: Designed for Arduino UNO R3, but also compatible with Arduino Zero, Leonardo, Mega, and Due boards.
Proto Screw Shield V1.0 – Pre-Assembled Terminal Block Expansion Board for Arduino UNO R3-Black Color
| Product Name | Proto Screw Shield V1.0 |
|---|---|
| Color | Black (color may vary by manufacturer, but for this product, black) |
| Terminal Pitch | 3.5mm or 3.81mm screw blocks |
| Prototyping Grid Pitch | 0.1" (2.54mm) through-hole spacing |
| Dimensions (L x W) | Approx. 74mm x 62mm (2.9" x 2.4") |
| Operating Temperature | Typically -40°C to +85°C |
| Compatibility | Arduino UNO R3, Leonardo, Mega, Due |
| Wire Compatibility | 26-16 AWG (typical range for terminal blocks) |




- Industrial Control: Securely wire sensors, buttons, switches, and actuators for use in industrial or long-term installations.
- Prototyping & Testing: Utilize the central prototyping area to build and test custom circuits using through-hole components, then easily connect them to the main I/O pins via the terminals or soldered connections.
- Educational Projects: Provides a reliable platform for students and educators to build circuits without relying on potentially loose jumper wires on a breadboard.
- Permanent Installations: Once a prototype is finalized, the shield allows for a more permanent and organized wiring solution, making it suitable for integration into enclosures or control panels.
Yes, it is generally compatible with other standard form-factor Arduino boards that share the UNO R3 pin layout, such as the Arduino Leonardo, Arduino Mega 2560, and Arduino Due.
No, this specific product listing is for a pre-assembled shield, meaning the terminal blocks and headers are already soldered onto the PCB and ready for immediate use.
Yes, the shield comes with female stacking headers, which allows you to plug another standard Arduino shield on top. The screw terminals are positioned at the edges for continued access.
The large central area has standard-pitch holes (0.1″ spacing) where you can solder your own through-hole components (like resistors, capacitors, or ICs) to build custom functionality right onto the shield.
The terminals typically accommodate a wire range of 26 AWG to 16 AWG. It’s recommended to strip approximately 5mm of insulation from the wire end before inserting it into the terminal block.









