Water Level Alarm Using 555 Timer

July 31, 2021 Electrical Engineering Projects 0 Comments

Read Time:1 Minute, 11 Second

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:

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.