DiGrove is Didels Grove on steroides. The DiGrove modules aspire to extend the fantastic Grove ecosystem by new, innovative and fascinating modules. Primarily designed for education and development, the modules are also handy for all sorts of DIY projects.
This is the DgAda which offers two or three connectors in line. Useful as I2C hub or for debugging. Also very handy as male or female pin adapters or as a Grove to breadboard adapter. The small holes let you easily break the PCB if you do not have a saw. Just make sure to use some sandpaper to smoothen the edges after breaking.
DiGrove modules come in a normed footprind and they can easily be fixed into a simple rail:
This helps debugging the wiring and keeps your prototype or experiment on the smallest possible.