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Lesson 23: Using MAX7219 8 Digit Display | Arduino Step by Step Course
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Part 2: LCD, LED and OLED Screens
In this lecture we learn how to use MAX7219 8 digits LED Display to display number and make a counter.
/*
* Robojax Arduino Step By Step Course
* Lesson 23, MAX7219 8 digit LED display
* 8 Digits LED Seven Segment Display Module based on MAX7219 using Arduino IDE
*
Please watch video instruction here https://youtu.be/8znr77ScydM
This code is available at http://robojax.com/course1/?vid=lecture11
with over 100 lectures Free On YouTube Watch it here http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339
* updated by Ahmad Shamshiri for Robojax
* On Monday Sep 16, 2019 in Ajax, Ontario, Canada
* You can get this code from Robojax.com
*
* Original Libary source: https://github.com/ozhantr/DigitLedDisplay
If you found this tutorial helpful, please support me so I can continue creating
make donation using PayPal http://robojax.com/L/?id=64
* Code is available at http://robojax.com/learn/arduino
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "DigitLedDisplay.h"
/* Arduino Pin to Display Pin
7 to DIN,
6 to CS,
5 to CLK */
#define DIN 5
#define CS 6
#define CLK 7
DigitLedDisplay ld = DigitLedDisplay(DIN, CS, CLK);
void setup() {
//Robojax Arduino Step By Step Course http://robojax.com/L/?id=338
/* Set the brightness min:1, max:15 */
ld.setBright(6);
/* Set the digit count */
ld.setDigitLimit(8);
}
void loop() {
//Robojax Arduino Step By Step Course http://robojax.com/L/?id=338
/* Prints data to the display */
ld.printDigit(12345678);
delay(3000);
ld.clear();
ld.printDigit(22222222);
delay(500);
ld.clear();
ld.printDigit(44444444);
delay(500);
ld.clear();
for (int i = 0; i < 100; i++) {
ld.printDigit(i);
/* Start From Digit 4 */
ld.printDigit(i, 4);
delay(50);
}
for (int i = 0; i <= 10; i++) {
/* Display off */
ld.off();
delay(150);
/* Display on */
ld.on();
delay(150);
}
/* Clear all display value */
ld.clear();
delay(500);
for (long i = 0; i < 100; i++) {
ld.printDigit(i);
delay(25);
}
for (int i = 0; i <= 20; i++) {
/* Select Digit 5 and write B01100011 */
ld.write(5, B01100011);
delay(200);
/* Select Digit 5 and write B00011101 */
ld.write(5, B00011101);
delay(200);
}
/* Clear all display value */
ld.clear();
delay(500);
ld.printDigit(2019, 3);
delay(4000);
}// loop ends
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