LM317T - Adjustable Voltage Regulator RFID Sticker the resistance of LDR will

the resistance of LDR will become low according to the intensity of light

SparkFun 16 Output I/O Expander Breakout - SX1509 is a 16-channel GPIO expander with an I2C interface – that means with just two wires

GND:   Ground

USB to serial adapter FT232 cable allows your computer to make communication with serial devices equipped with 9 pin female RS232 interface

LM317T - Adjustable Voltage Regulator RFID Sticker the resistance of LDR willIntroduction : LM317 is an adjustable 3terminal positive voltage regulator capable of supplying in excess of 1. 5 A over an output voltage range of (1. 2 V to 37 V). This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blowout proof. The LM317 serves a wide variety of