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Arduino Tutorial for Beginners 15 - Using 4×4 Keypad With Arduino
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Welcome to this video on Arduino Tutorial for Beginners. This video about Keypad 4x4.
This video shows how keypad works and how to receive key capture on keypad
Connect R1-R4 to Arduino pin 4-7
Connect C1-C4 to Arduino pin 8-11
Algorithm to capture keypad:
Check the column are changed status
Set the Rows Ri to LOW
Check that column are changed
if not - i++
if change - print out and set all rows to LOW
Code in library :
#include Keypad.h
Include keypad library
char hexaKeys[ROWS][COLS] = {
{'0','1','2','3'},
{'4','5','6','7'},
{'8','9','A','B'},
{'C','D','E','F'}
};
Change the key to match with your key
byte rowPins[ROWS] = {3, 2, 1, 0};
byte colPins[COLS] = {7, 6, 5, 4};
Change the rows and column to match with your rows/column
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
Init Object customKeypad with information parameters
Assign capture receive from Keypad to customKey to check
Arduino programs, called “sketches”, are written in a programming language similar to C and C++. Many sensors and other hardware devices come with prewritten software – look on-line for sample code, libraries (of functions), and tutorials. Learn the Arduino platform and programming language to create robots, interactive art displays, electronic gadgets and much more.
#ProgrammingKnowledge #Arduino #ArduinoTutorial
★★★Top Online Courses From ProgrammingKnowledge ★★★
★★★ Online Courses to learn ★★★
★★★ Follow ★★★
DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!
This video shows how keypad works and how to receive key capture on keypad
Connect R1-R4 to Arduino pin 4-7
Connect C1-C4 to Arduino pin 8-11
Algorithm to capture keypad:
Check the column are changed status
Set the Rows Ri to LOW
Check that column are changed
if not - i++
if change - print out and set all rows to LOW
Code in library :
#include Keypad.h
Include keypad library
char hexaKeys[ROWS][COLS] = {
{'0','1','2','3'},
{'4','5','6','7'},
{'8','9','A','B'},
{'C','D','E','F'}
};
Change the key to match with your key
byte rowPins[ROWS] = {3, 2, 1, 0};
byte colPins[COLS] = {7, 6, 5, 4};
Change the rows and column to match with your rows/column
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
Init Object customKeypad with information parameters
Assign capture receive from Keypad to customKey to check
Arduino programs, called “sketches”, are written in a programming language similar to C and C++. Many sensors and other hardware devices come with prewritten software – look on-line for sample code, libraries (of functions), and tutorials. Learn the Arduino platform and programming language to create robots, interactive art displays, electronic gadgets and much more.
#ProgrammingKnowledge #Arduino #ArduinoTutorial
★★★Top Online Courses From ProgrammingKnowledge ★★★
★★★ Online Courses to learn ★★★
★★★ Follow ★★★
DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. This help support the channel and allows us to continue to make videos like this. Thank you for the support!
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