I would like to share my first steps with the Grove 'plug & play' components. This is primarily a chainable LED. The sketch shows the full color spectrum. The LED itself offers an extension to connect additional LEDs from the manufacturer. Once the Grove Base Shield is plugged onto the Arduino Uno R3, the Grove's universal cable can be used to connect the LEDs to port D7.
This short introduction reflects on the available original example of Seeedstudio. Further examples with the representation of light changes red / blue and changes in light intensity are available in the Libary.
Further examples with a introduction in components from Grove Starter Kit can be found here: