Part of the appeal to using Grove modules is the simple cabling system that is used to link them, with locking/latching/buckled connectors that stay put until you remove them. Depending on your application, a tidy short cable may be preferable over the longer, standard cables.
Wiring Standard:
Pin 1 – Black (Ground)
Pin 2 – Red (Power)
Pin 3 – White (Signal 1)
Pin 4 – Yellow (Signal 2)
Links:
