The DFRobot Arduino-Compatible Screw Shield is a terminal expansion board that allows you to screw in jumper wires to a screw terminal for a much stronger and secure connection for your I/O and power pins. Feel secure with this arduino-compatible screw shield.
The screw shield v2 from DFRobot also extend the power supply pins for the signal pins. You could directly plugin the sensors and the servos to the screw shield v2. The pin headers are color coded for easy identification of analog, digital, and power pins.
We commonly use: Green for digital I/O; Blue for Analog I/O; Red for Voltage