This is specifically written in on STC series microcontroller information about light sensor of a set of source code!

STC_GY-30\STC_BH1750\STARTUP.A51
.........\..........\STARTUP.LST
.........\..........\STARTUP.OBJ
.........\..........\STC51_BH1750
.........\..........\STC51_BH1750.hex
.........\..........\STC51_BH1750.lnp
.........\..........\STC51_BH1750.M51
.........\..........\STC51_BH1750.Opt
.........\..........\STC51_BH1750.plg
.........\..........\STC51_BH1750.Uv2
.........\..........\STC51_BH1750_Opt.Bak
.........\..........\STC51_BH1750_Uv2.Bak
.........\..........\STC_BH1750.c
.........\..........\STC_BH1750.LST
.........\..........\STC_BH1750.OBJ
.........\STC_GY-30接线图.pdf
.........\STC_BH1750
STC_GY-30

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