Solid sate device project
GURU NANAK INSTITUTE OF TECHNOLOGY
TEAM MEMBERS:-
Prafulla kumar sahnai(104)
Rohit saw(106)
Sumedha bhattacharya(105)
ELECTRONICS AND COMMUNICATION ENG.

Persistence
of
Vision

The human eye is
thought to see an
afterimage for
approximately one
twenty-fifth of a second.

Our project focuses on meeting the tremendous
growth of advertisement. Persistence of vision
(POV) provides a unique technique to display our
messages for advertising in an efficient way and
proper utilization of provided space. It is much
more attractive than LCD displays or dot matrix
displays for displaying messages.

Processor used is ATmega328. Arduino Nano consists of 14
Digitalinput output pins and 8 Analog input pins.
It is used for switching the LED’s at appropriate time.

It is an array of LED that will turn on/off according to the message to be displayed.
It displays the message in 2-D or 3-D pattern

This will provide the facility to rotate the onboard circuit up to the desired speed
that is sufficient for the principle of Persistence of Vision.

The power supply unit provides the power to
microcontroller, led driver and motor/driver system.

• Rotation of single LED with high speed in
circular motion gives the appearance of
complete circle due to the persistence of
vision. It forms a matrix and the resolution of
message depends on the speed. The single
element shows a pixel of the matrix. This idea
can be extended to rotate a line of number of
LEDs and thus create a display of letters or
numbers. Now depending on what has to be
displayed, the LEDs are synchronised and the
required message is displayed in two
dimensions.

• The more attractive the message will be, the more people will get
influenced by it. The main motive of our project is to make the
advertising media an effective one. Following are the areas in
which POV plays a unique role:
• ADVERTISING
• EDUCATION
• ENTERTAINMENT
• ANIMATION
• PROPELLER
• CLOCK TOYS AND GAMES
• MALLS
• 3-D DISPLAY