My Light Diagram

               This project aims to design  a  Live  traffic  system. This  project  consists  of   GSM    module , LED   display ,   LPC   2138, and   ZIG-BEE module. This   system   is   mainly applicable   for   traffic   maintaining. A    speed   governor    will be   there   in vehicle   which   is   used   to reduce   the   speed of vehicle.   A speed   limit   board   will be   placed   on the   certain area   and this system consists of GSM module, LED display and microcontroller board. Traffic police could control the speed limit showing the LED display via internet. And this   speed range will be send to all vehicles through zigbee module. With   the   help   of motor   control   we   can reduce  ...

This simple circuit lets you scan a 220V live wire. The clock input of the IC is connected to a wire, which acts as the sensor. Here, we have used 10cm length of 22SWG wire as the sensor. When you hold the sensor (metallic conductor or copper wire) close to the live wire, electric field from mains activates the circuit. As the input impedance of the CMOS IC is high, the electric field induced in the sensor is sufficient to clock it. The output obtained at pin 11 of CD4017 drives the LED. Flashing of the LED (LED2) indicates the presence of mains, while LED1 indicates that the scanner is active. 220V Live Wire Scanner Circuit Diagram The circuit can be used to find stray leakage from electrical appliances like fans, mixers, refrigerators, etc. It can be easily assembled on any general-purpose board or the discrete components can be directly soldered on the IC. A 9V PP3 battery powers the circuit. If you use a mains adaptor, make sure that it is well regulated and isolated; otherwise, ev...