Screw terminal shield - 20 I/O pins, for Arduino UNO R3

Product overview

• Connection module for Arduino UNO boards with screw terminals instead of pin connectors
• All 20 digital and analog pins routed to screw terminals
• Connect inputs and outputs for sensors and actuators without a soldering iron
• Fits Arduino UNO, compatible boards, and electrically equivalent variants
• Shield pin layout with stackability for additional modules

Product description

This connection module connects an Arduino UNO to components via screw terminals. Instead of plugging in or soldering wires directly to pins, cables or wires are inserted into the terminals and secured with a screw. This reduces the risk of errors during repeated assembly and modifications and makes rewiring much more straightforward.

All 20 of the Arduino’s I/O pins are available on the module: the 14 digital pins for digital inputs, outputs, and PWM functions, the six analog inputs, as well as power and ground. The Arduino remains undamaged; the shield simply plugs onto the pin headers.

Typical applications include experimental setups with push buttons, switches, and simple sensors, as well as controlling LEDs, relays, or motors via individual pins. With changing prototypes, the screw terminals save time because cables can be connected without crimping or soldering. Troubleshooting is also easier because individual cables can be disconnected or swapped without damaging the board.

The Arduino itself and any additional shield modules are plugged in below or above it. The connection module itself requires no power supply; the Arduino is powered as usual via USB or an external power supply.

Safety notice

The shield is intended exclusively for building prototypes and for testing and development purposes. It is not intended for use in household electrical circuits or other power supplies with direct mains voltage. When connecting devices with higher current requirements or inductive loads such as relay coils, qualified electricians must be involved; if in doubt, consult a qualified electrician before commissioning.