ABSTRACT This automatic emergency led light used in night at emergency time when the power cut or off by some region. This emergency light takes 230V AC and it converts it in 12V DC and charge the battery which is used in this circuit. The power of the battery is used that time when ...
the PIR sensor consists of three terminals such as Vcc, Dout, and GND. Where Dout pin is directly connected to pin14 (A0) of Arduino UNO. An LCD display is used to display the status. LCD display pins RS and EN are connected to 12 and 13 pins of Arduino. Data pins namely D0 to ...