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Persistence of Vision is a kind of optical illusion that happens in our brain. The human brain cannot process more than 10-12 images per second when it exceeds this number of images optical illusion is created. The same principle is used to make animated movies.
In this electronics project, we are going to fabricate a PoV display using Arduino, motor and LED. We will synchronize the LED flashing with the motor speed to make a Pov display with the help of Arduino programming techniques.
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Components used:
Arduino Uno: It is a type of microcontroller board based on ATmega328P used to develop various projects. Since it is an open-source hardware platform a huge community is supporting it which makes it easy to solve all the problems. It can be programmed based on the requirement using C++ with the help of Arduino IDE.
DC motor: Here the motor is used to rotate the whole setup where the LED’s, battery and Arduino board are fixed.
LED: It is used to display the text as per the program. Minimum 8 LED’s are required to display a text. All the LED’s are soldered to a dotted board along with the resistors using a soldering gun.
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Project Implementation:
Solder the LED’s to the PCB with the resistors and connect the LED’s positive to the Arduino board’s pin 6,7,8,9,10,11, 12 and 13. Create a common ground for all the LED’s and connect it to the GND of Arduino.
Connect the battery to the Arduino board via a switch. Place all the components on a wooden plate rigidly.
Now connect the whole setup to the DC motor with the help of gears to reduce the RPM. For motor, the power supply is given with different source.
Write the program based on what you want to display and upload it to the Arduino board. Turn on the power to the Arduino board and then for the motor.
You can able to see the words are displayed as per the programming. Here the programming is done to turn ON/OFF the LED’s which overlaps with different images formed by creating an illusion. Below is a sample code that shows how the letters are formed by turning ON/OFF the LED’s:
A = 1 1 1 1 1 1 1 1 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 1 1 1 1 1 1 1
B = 1 1 1 1 1 1 1 1 1 0 0 1 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 1 0 0 0 1 0 1 1 0 1 1 1 0
C = 0 0 1 1 1 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1
D = 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 1 1 1 0 0
E = 1 1 1 1 1 1 1 1 1 0 0 1 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 1 0 0 0 1
F = 1 1 1 1 1 1 1 1 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0
G = 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 1 1 1 0
H = 1 1 1 1 1 1 1 1 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 1 1 1 1 1 1 1
I = 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1
J = 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0
K = 1 1 1 1 1 1 1 1 0 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1
L = 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1
M = 1 1 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1
N = 1 1 1 1 1 1 1 1 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 1 1 1 1
O = 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 1 1 1 1 1 1 0
P = 1 1 1 1 1 1 1 1 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0
Q = 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1
R = 1 1 1 1 1 1 1 1 1 0 0 1 1 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 0 0 1 0 0 1 1 0 0 0 0 1
S = 0 1 1 1 0 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 1 1 1 0
T = 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
U = 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0
V = 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 1 1 1 1 1 0 0
W = 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 1 1
X = 1 1 0 0 0 0 1 1 0 0 1 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0 1 1 0 0 0 0 1 1
Y = 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0
Z = 1 0 0 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 0 1 0 0 0 1 1 0 1 0 0 0 0 1 1 1 0 0 0 0 0 1
Below table represents the LED status for the letter E:
|
1,1,1,1,1,1,1,1 |
1,0,0,1,0,0,0,1 |
1,0,0,1,0,0,0,1 |
1,0,0,1,0,0,0,1 |
1,0,0,1,0,0,0,1 |
|
LED1 ON |
LED1 ON |
LED1 ON |
LED1 ON |
LED1 ON |
|
LED2 ON |
LED2 OFF |
LED2 OFF |
LED2 OFF |
LED2 OFF |
|
LED3 ON |
LED3 OFF |
LED3 OFF |
LED3 OFF |
LED3 OFF |
|
LED4 ON |
LED4 ON |
LED4 ON |
LED4 ON |
LED4 ON |
|
LED5 ON |
LED5 OFF |
LED5 OFF |
LED5 OFF |
LED5 OFF |
|
LED6 ON |
LED6 OFF |
LED6 OFF |
LED6 OFF |
LED6 OFF |
|
LED7 ON |
LED7 OFF |
LED7 OFF |
LED7 OFF |
LED7 OFF |
|
LED8 ON |
LED8 ON |
LED8 ON |
LED8 ON |
LED8 ON |
Application of POV:
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