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Water Level Alarm Using 555 Timer

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Introduction:

Generally, water stored in overhead tank is wasted due to over flow ,when the tank is full. Water level alarm using micro-controllers like 8051 and AVR are shown in previous articles. This article shows simple circuits of water level indicator with alarm.

Components Required:

  • NE555 Timer

  • Resistors 

  • R1, R4-1K

  • R2-22k

  • R3-570 Ohm

  • Capacitor- 1UF

  • Buzzer

  • Connecting wires

Circuit Diagram:

 

Water Level Indicator and Alarm Using 555 timer
Water Level indicator Circuit Diagram

Working:

  • The circuit uses a 555 timerin astable mode with R1=22k ohms, R2= 570 ohms and C1=1 uF. The frequency of the given astable circuit is around 62 Hz.
  • The two probes which are shown in the circuit should be kept at the high level for the water. The distance between the probes should be less than a few centimetres to ensure that the conduction between the probes will take place when water is touched to these probes.
  • When the water level rises to the height of the probes, then the 555 circuit will get enabled and the output of the 555 timer produces a square wave output with a frequency of about 62 Hz. This output is given to the buzzer.

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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