This protoshield allows you to add your own circuitry or components to your Grove system prototypes. This allows you access to all four lines from the connector cable ? S0, S1, VCC and GND. There is also an extra normally-open button to take advantage of. The hole spacing makes using normal DIP-format ICs and other components very simple. You may wish to purchase more for future use in advance.
For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.