American International University-Bangladesh(AIUB)

1. WELLCOME
PSA Presentation
Course Teacher-Rethwan Faiz

2. NAME ID
1. Alam iftekhar ul 12-22225-3
2. Hasan,Md.Nazmul Anas Bin 13-24437-2
3. Shiblu Nazmul Huda 12-22183-3
4.Rahman,MD.Sadiqur 13-24415-2

3. Presentation
Topic
Auto Water
Pump Switch Using
Microcontroller(Ardunio)

4. Why we choose this topic………
 Water supply is irregular because pumps are not
being operated in proper time.
 Water is being wasted because pumps are not
switched off immediately after the water tank is
full.
 Pumps are often burning out due to high voltage
in-rush current.
 Pumps are running while the reservoir is empty,
which is shortening the lifetime of the pumps
 Continuous load-shedding is making you worried
about continuous supply of water.

5. Overview…………
When Water Tank Level goes down, pump turns
ON automatically.
When Water Tank gets full, pump turns OFF
automatically.
Ensures regular supply of water.
Prevents waste of water.
To reduce the electricity loss.

6. Microcontroller
 A microcontroller is a small computer on a single integrated
circuit containing a processor core, memory, and programmable
input/output peripherals. Program memory in the form
of Ferroelectric RAM, NOR flash or OTP ROM is also often included
on chip, as well as a typically small amount of RAM.
Microcontrollers are designed for embedded applications, in
contrast to the microprocessors used in personal computers or other
general purpose applications.
 Microcontrollers are used in automatically controlled products and
devices, such as automobile engine control systems, implantable
medical devices, remote controls, office machines, appliances, power
tools, toys and other embedded systems. By reducing the size and
cost compared to a design that uses a separate microprocessor,
memory, and input/output devices, microcontrollers make it
economical to digitally control even more devices and
processes. Mixed signal microcontrollers are common, integrating
analog components needed to control non-digital electronic
systems.

7. Arduino
 Arduino is an open-source computer hardware and software company,
project and user community that designs and manufactures
microcontroller-based kits for building digital devices and interactive
objects that can sense and control the physical world.
 The project is based on a family of microcontroller board designs
manufactured primarily by Smart Projects in Italy, and also by several
other vendors, using various 8-bit Atmel AVR microcontrollers or 32-bit
Atmel ARM processors. These systems provide sets of digital and
analog I/O pins that can be interfaced to various expansion boards
("shields") and other circuits. The boards feature serial communications
interfaces, including USB on some models, for loading programs from
personal computers. For programming the microcontrollers, the Arduino
platform provides an integrated development environment (IDE) based on
the Processing project, which includes support
for C, C++ and Java programming languages.

9. Circuit Diagram

10. Circuit Diagram 2

11. Codes

12. A is connected to K and B after
inverting connected to J

13. For the lower sensor(J) the output is inverted before giving it to the flip-flop
So
when there is water on both sensors, input = 0 1, output = 0 = motor off
when water is coming down after filling up, input = 0 0, output = 0 = motor off
when water comes below the lower sensor, input = 1 0, output = 1 = motor on
when water starts rising from the lower sensor, input = 0 0, output = 1 = motor on
when there is water on both sensors, input = 0 1, output = 0 = motor off

14. .
 Timing diagram ……………………
0 0 1 0 0
J
0 1 1 1 0
K
0 1 0 1 0 1
Clk
1 1 0 0 1
Q

15. Working of circuit 2
 The analog input A0 to A4 is used to sense the water
level.
 A 16 X 2 display is connected which shows different
water level output and motor status
 A buzzer is connected to dig pin7 which sends signal
to buzzer when circuit have problem
 Digital pin8 controls the relay

16. Conclusion ……………………………
** The aim of the design of an automatic pump switch was to
manage electricity and water resources efficiently.
**The system worked according to specification and proved
quite satisfactory.
** Finally, it reduces stress associated with manual water pump
controller, which require that somebody go to physically switch
them on and off.

17. References
1. http://auto.howstuffworks.com/under-the-
hood/car-part-longevity/water-pump-last.htm
2. http://auto.howstuffworks.com/cooling-
system4.htm
3. "Programming Arduino Getting Started with
Sketches". McGraw-Hill. Nov 8, 2011. Retrieved 2013-
03-28.