photocell: measuring the current light luminance;
high precision temperature&humidity sensor: measure current temperature and relative humidity
GSM module: can be used to make phone call, text,2G connectivity,GPS positioning.
Developed on Arduino, with the main chip:2560,communicate with Arduino using AT command
support powered by battery.
video demo on youtube:
more about BPI-GSM ,please read gitbook online documents,include SCH and test source code