Hi there,
Not sure if this applies , but adding some delay between the init and reads seemed to work for others;
Grove Sunlight Sensor Library doesn't Work - #24 by PJ_Glasso
HTH
GL 
PJ
Hi there,
Not sure if this applies , but adding some delay between the init and reads seemed to work for others;
Grove Sunlight Sensor Library doesn't Work - #24 by PJ_Glasso
HTH
GL PJ