Introduction: 5X3 MATRIX DISPLAY USING LEDs AND CONTROL IT USING ARDUINO
THIS IS VERY COOL AND SIMPLE PROJECT WHICH IS BASED MATRIX CONNECTIONS
BY USING THIS TYPE OF CONNECTION WE CAN REDUCE THE WIRING
AND ALSO ADDRESS EACH LED
TO DISPLAY TEXT ON THIS WE ARE ACTUALLY USING PERSISTENCE OF VISION
AS WE GO ON AND OFF SINGLE LED BUT THE SWITCHING SPEED IS SO FAST WE SEE AS IT A SINGLE IMAGE
COMPONENTS REQUIRED:
LEDs X 15
RESITORS 100 OHMS X 15 (CAN BE 220,330)
PERFORATED BOARD
MALE OR FEMALE HEADER PINS
MALE OR FEMALE JUMPER WIRES
AND OF COURSE ARDUINO
Step 1: SOLDER THE COMPONENTS
MAKE CONNECTION ACCORDING TO CIRCUIT DIAGRAM.
SHORT ALL THE LEDs ANODE IN EACH ROW MEANS ALL LEDs ANODE IN ROW1 SHOULD BE SHORT WITH EACH OTHER AND SO IN ROW2,ROW3,ETC.
SIMILARLY, SHORT ALL THE LEDs CATHODE IN EACH COLUMN MEANS ALL LEDs CATHODE IN COL1 SHOULD BE SHORT WITH EACH OTHER AND SO IN COL2,COL3.
IN OUR SITUATION WE HAVE MAKE ONLY 3 COLUMNS AND 5 ROWS SO CONNECT ACCORDINGLY. ALWAYS REMEMBER TO USE RESISTOR IN SERIES WITH LEDs TO LIMIT CURRENT.
WE WILL USE 100 OHMS RESISTOR ALSO 220 OR 330 OHMS CAN BE USED BUT NOT MORE THAN 330 AS ARDUINO CAN NOT GLOW ALL LEDS IN SINGLE ROW.
Step 2: UPLOAD CODE
UPLOAD THE CODE LINK IS GIVEN BELOW:
YOU CAN CHANGE THE PIN NUMBERS IN COD ACCORDING TO YOUR NEEDS
THIS CODE IS DISPLAYING TEXT (STAY HOME STAY SAFE )
YOU CAN ALSO CREATE MORE PATTERNS USING THIS TECHNIQUE AS YOU GO THROUGH THE CODE
WHICH IS VERY VERY SIMPLE
Step 3: TESTING THE CODE
THIS IS THE 20 SECOND TEST VIDEO
HOPE YOU GET THE CONCEPT OF MATRIX DISPLAY AND DISPLAY ALPHABET USING PERSISTENCE OF VISION
