This document describes an automatic water level controller project that uses a NE555 timer IC to control a relay and pump to prevent overflow and waste. It aims to allow sustainable water use and reduce electricity waste. The system includes a transformer, full-wave rectifier, regulator IC, transistors, resistors, buzzer, LEDs, relay, and connecting wires. When the water level reaches certain points, the LEDs will indicate the level and the relay will switch the pump on or off to maintain the water level automatically. This helps efficiently use water resources.

1. BANGLADESH ARMY UNIVERSITY OF
ENGINEERING AND TECHNOLOGY
QADIRABAD,NATORE
Department Of Computer Science & Engineering
Faculty of Electrical and Electronic Engineering

2. AUTOMATIC WATER LEVEL
CONTROLLER
PRESENTED BY:
S.M. SHOFIKUZZAMAN SUMON

3. OBJECTIVE
• 1.Over Flow Problems.
• 2.To prevent wastage of water.
• 3.To prevent wastage of energy.
• 4.Attentation and observation.
• For sustainable use of water and judicious use of
electricity.

4. COMPONENTS REQUIRED
Power Supply
NE 555 timer IC
Resistors
Relay (6V)
BC 547 transistor
Diode
Buzzer
LED
Battery
Connecting wire
IC

5. TRANSFORMER
• A centre-tapped
step-down
transformer is used
to provide a suitable
voltage to the full-
wave rectifier

6. DIODE
• A diode is a specialized
electronic component
with two electrodes
called the anode and
the cathode. Most
diodes are made with
semiconductor
materials such as
silicon, germanium, or
selenium.

7. NE 555 TIMER IC
• Ground.
• Trigger.
• Output.
• Reset.
• Vcc.
• Discharge.
• Threshold.
• Control.

9. FULL-WAVE RECTIFIER
• The full wave rectifier
consists of four rectifier
diodes and one
2000µF,one 1000µF
capacitors. 100 Ohm
resistor.It is used to
convert the AC supply
into pulsating DC.

10. REGULATOR IC
• Connected to the
rectifier outputs are
voltage regulators IC
7805. It is also used to
supply the DC voltage
to support current flow
between the metallic
contacts.

11. TRANSISTORS
• Transistors are
semiconductor devices
used to amplify and
switch electronic
signals and electrical
power. At least three
terminals for connection
to external circuit are
present.

12. RESISTOR
• A resistor is a passive
two-terminal electrical
component that
implements electrical
resistance as a circuit
element.

13. BUZZER
• A buzzer or beeper is
an audio signalling
device.

14. RELAY
• The relay used here is a
Single Pole Double Throw
(SPDT) relay.
• It use as a switch in this
project.
• It is a 6v Relay . When it get
maximum voltage from 555
timer it start the motor or
water pump automatically.
• When it get low(less than 6v
or 0v)from 555 timer it turn
off the motor or water pump.

15. LED
• Three LEDs are used to
indicate water level -
Upper level.
Middle level.
Lower level.

16. 1/3 Vcc
Reset pin
Three level
High output
Low output
Relay circuit closed
Relay circuit open

17. Circuit

18. Set up a digital meter.
Add display
Using Microcontroller
Using Adriano

19. CONCLUSION:
This system is very beneficial in rural as well as
urban areas. It helps in the efficient utilization of
available water sources. If used on a large scale, it
can provide a major contribution in the conservation
of water for us and the future generations.