Seeedstudio Grove Starter Kit for Photon Grove Starter Kit for Photon is an easy to use plug-and-play kit for the Photon - one base shield lets you connect a variety of included Grove modules. It includes a Grove Shield for Photon and several Groves, Grove Shield for Photon is an expansion board, which is more easy for users to build Groves 4-pin standard interfaces from Spark Photon, also avoid the user spent too many cables to build prototype.