LED Cube Presentation Slides

hundreds
One Cube

O
F
POSSIBILITI

Making of

VIDEO

FOR MORE VIDEOS: VISIT WWW.INSTRUCTABLES.COM

PARTS USED
RESISTORS
(limit current flow in the circuit)

LEDs
(Light Emitting Diode)

TRANSISTORS
(serves as a switch)

0V 5V

220 220

+ +
LED ( LED light up)
OFF
- -
C C
22 K 22 K
B OFF B Transistor
0V 5V
ON
E E
transistor

When the transistor is OFF, When the transistor is ON,
LED turns OFF LED turns ON

LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 LED 7 LED 8 LED 9

5V 5V 5V

220 220 220 220 220 220 220 220 220

+
ON ON ON
-
Level 1 C
22 K
B Common Cathode ( negative terminal)
5V Transistor
E
ON

Light stays
off

5V
+ + +

LOW

OFF

Light turns
on

5V
+ + +

HIGH

ON

 Apply 5V (logic high) at terminal LED1
 Apply 3.3V (logic high) at terminal Level 1 (LVL 1)
 Connect a jumper wire between two GND terminal

5V

3.3V

The Arduino board is a small micro-controller
board, which is a small circuit that contains a
whole computer on a small chip (Atmega 328),
the heart of the board.
Built in LED
connected to
pin13

Atmega 328

The Arduino board consists of the following I/O ports:
 14 digital IO pins (pins 0–13/ logic ‘High’- 5V, ‘Low’– 0V)
 6 analogue In pins (pins 0–5)
 6 analogue Out pins (pins 3, 5, 6, 9, 10, and 11)

 Arduino software is free, Open source
programming plateform.

 Source code for Arduino is called a sketch.

 Directory: D:/ arduino-1.0/ double click arduino
Upload

Verify
(compile)

Sketch Editor Window

Verify
Upload to I/O board

Core
program

Your sketch goes here

 Arduino expects two functions to exist
—one called setup() and one called loop().

 setup() {
pinMode (13, Output) - assign pin 13 as Output
}

 loop() contains the core of your program.
digitalWrite (13, High) - turn on the built in LED connected to pin13
delay (1000) - wait for a secoond
digitalWrite (13, LOW) - turn off the LED
delay (1000) - wait for a second.

Upload
Verify

Done compiling Done uploading

To display error message

const int LED1 = 1; // connect LED 1 to pin 1
const int L1= 10; // connect Level 1 to pin 10

void setup()
{ pinMode (LED1, OUTPUT); // declare LED1 as an OUTPUT
pinMode (L1, OUTPUT); // declare Level 1 as an OUTPUT
}

void loop()
{
digitalWrite (L1, HIGH); // turn on Level 1 transistor
digitalWrite (LED1, HIGH); // turn on LED1
delay (200); // delay for 200ms
digitalWrite (LED1, LOW); // turn off LED1
delay(100); // delay for 100ms
}

const int L1= 10; // connect Level 1 to pin 10

void setup()
{ pinMode (LED1, OUTPUT); // declare LED1 as an OUTPUT
pinMode (LED2, OUTPUT); // declare LED2 as an OUTPUT
pinMode (LED3, OUTPUT); // declare LED3 as an OUTPUT
pinMode (L1, OUTPUT); // declare Level 1 as an OUTPUT
}

void loop()
{
digitalWrite (L1, HIGH); // turn on Level 1 transistor
digitalWrite (LED1, HIGH); // turn on LED1
delay (200); // delay for 200ms
digitalWrite (LED1, LOW); // turn off LED1
delay(100); // delay for 100ms
-----------
----------
To be continued
}

 The for statement lets us do things over and over again, for a
specified number of repetitions.

 The integer i is used to set the number of times that the loop will
execute, running all the code inside the code block.

 In the for loop, as long as i is less than 10, it will continue looping,
and each time the for loop is passed, i is incremented by 1.

Example:
int i ; // declare i as an integer
for(i = 0; i<5; i++) { Execute Print
print(i); function when i
is 0 to 4
}

Or
for (int i=0; i<5; i++) {
Print(i);
}

void loop()
{ Specify 3 loops that
for (int i = 0; i < 3; i ++) core program will
{ execute
digitalWrite ( L1, HIGH );
digitalWrite ( LED1, HIGH );
delay (200);
digitalWrite ( LED1, LOW) ; Core program:
delay (100);
digitalWrite (LED2, HIGH ); LED 1, 2, 3 will turn
delay (200); ON & OFF in
digitalWrite ( LED2, LOW ); sequence
delay (100);
delay (200);
digitalWrite ( LED3, LOW );
delay (100);
}
Turn off all LEDs for
digitalWrite ( L1, LOW);
1 sec
delay (1000 ) ;
}

 An array contains one or more variables in a list.
 The array shown below is an array that holds three integer
values: 1,2,3

Number of
variables

int LevelPin [3] = { 10, 11, 12 };
Type of array
Name of List of variables
content
the array

i.e LevelPin [0] = 10
LevelPin [1] = 11
LevelPin [2] = 12

Another great use of the for loop is to go through an array
and look at each item in the array:

for ( int level=0; level <3; level++)
{ pinMode (LevelPin[level], OUTPUT ); }

Each time the loop executes, level will be incremented using
the next integer in the Array[ ]
pinMode (LevelPin[0], OUTPUT );



for (level=0; level< 3; level++)
{
digitalWrite ( LevelPin[level], HIGH );
:
:

delay (100);

:
:
digitalWrite ( LevelPin[level], LOW );
delay(50);
}

LED Cube Presentation Slides

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