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Introduction:
This circuit is implemented using ULN2003 IC. IC ULN2003 made up of an array of seven Darlington transistor pairs.
Components Required:
- L1-L3-LEDs
- R1-R3-1k ohm
- M1-M7-Metal Contacts
- ULN2003 IC
Circuit Diagram:
Working:
- This circuit can be used to indicate three levels of water in tanks.
- When metal contact is reached ,each Led starts glowing .When the tank is full buzzer starts ringing along with this all LEDs are ON.
Uses:
- Water Level Indicator Is Very Useful In Houses.
- This Projects is also implement at large scale like ,school ,collages , Universities, Malls, Multinational ,International Companies as well.
- It Helps Us To Save Our Electricity And Also Help To Prevent Of Water Wastage.
Complete Project Video:
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