Automatic Street LightningNeeds no manual operation for switching ON and OFF. When there is need of light. It detects itself weather there is need for light or not. When darkness rises to a certain value then automatically street light is switched ON and when there is other source of light i.e. day time, the street light gets OFF. The sensitiveness of the street light can also be adjusted. In our project we have used four L.E.D for indication of bulb but for high power switching one can connect Relay (electromagnetic switch) at the output of pin 3 of I.C 555. Then it will be possible to turn ON/OFF any electrical appliances connected all the way through relay.

This circuit uses a popular timer I.C 555. I.C 555 is connected as comparator with pin-6 connected with positive rail, the output goes high(1) when the trigger pin 2 is at lower then 1/3rd level of the supply voltage. Conversely the output goes low (0) when it is above 1/3rd level. So small change in the voltage of pin-2 is enough to change the level of output (pin-3) from 1 to 0 and 0 to 1. The output has only two states high and low and can not remain in any intermediate stage.

SUBMITTED BY: GUIDED BY:

AMIT KUMAR SAHOO Rashmi Rekha Sahoo

EICE-‘A’ Asst. Prof.,EICE-‘A’

ANTI-SLEEP ALARAM FOR STUDENT ABSTRACT:

While actually giving in to our body’s natural wants such as sleep, we’re keeping the balance beam in an upright and neutral position — generally a good thing to do. But life comes and calls quite often, many times forcing us to put hunger, drowsiness, and other basic human needs on the back burner in order to seal the deal and get the job done. So here’s the scenario, you’re sitting in your car getting ready for a big meeting that if completed will net your company nice little multi-billion dollar deal. You’re supposed to be going over your notes and preparing yourself for this staple achievement. But instead, you find yourself doing the whole bobble head thing, getting dangerously to the steering wheel with each and every bob. If only there were something to keep you awake…

This circuit saves both time and electricity for students. It helps to prevent them from dozing off while studying, by sounding a beep at a fixed time interval, say, 30 minutes. If the student is awake during the beep, he can reset the circuit to beep in the next 30 minutes. If the timer is not reset during this time, it means the student is in deep sleep or not in the room, and the circuit switches off the light and fan in the room, thus preventing the wastage of electricity.

SUBMITTED BY: GUIDED BY:

AMIT KUMAR SAHOO Rashmi Rekha Sahoo

EICE-‘A’ Asst. Prof.,EICE-‘A’