Other Arduino Codes and Videos by Robojax
This this video shows how to use 2 digit LED Seven Segment Display based on 74HC595 using Arduino IDE
it will display the decimal points easily with any digits. Wait is over.Once you downloaded and installed the library, go to File->Examples->Robojax-2DigitSevenSegment to opend the example
/*
* 74HC595 Seven Segment 2 Digits LED Display with decimal points for Arduino
* updated by Ahmad Shamshiri for Robojax
* On Monday Sep 17, 2019 at 00:03 in Ajax, Ontario, Canada
*
* Watch video instruction for this video: https://youtu.be/k-f6lwwUTAs
* At the moments, it doesn't display decimal points. It needs a little work to make it work
You can get the wiring diagram from my Arduino Course at Udemy.com
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* 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/>.
* Original source and text.
* 2 Digitl 7 segment display PCB board with (2) 74HC595 shift register ICs
* Arduino Tutorial - www.Ardumotive.com
* Dev: Michalis Vasilakis // Date: 31/1/2018 // Ver:1.0
*/
#include <ShiftRegister74HC595.h>
#define SDI 7
#define SCLK 6
#define LOAD 5
#define DIGITS 2
// create shift register object (number of shift registers, data pin, clock pin, latch pin)
ShiftRegister74HC595 sr (DIGITS, SDI, SCLK, LOAD);
int value,digit1,digit2,digit3,digit4;
uint8_t digits[] = {B11000000, //0
B11111001, //1
B10100100, //2
B10110000, //3
B10011001, //4
B10010010, //5
B10000010, //6
B11111000, //7
B10000000, //8
B10010000 //9
};
void setup() {
}
void loop() {
showNumber(18);
delay(2000);//
for(int i=0; i<=99; i++)
{
showNumber(i);
delay(100);
}
delay(2000);
for(int i=99; i >=0; i--)
{
showNumber(i);
delay(50);
}
delay(2000);
}// loop
/*
* @brief shows number on the Seven Segment Display
* @param "num" is integer
* @return returns none
* Usage to show 18: showNumber(18);
* Written by Ahmad Shamshiri on Sep 17, 2019.
* in Ajax, Ontario, Canada
* www.Robojax.com
*/
void showNumber(int num)
{
digit2=num % 10 ;
digit1=(num / 10) % 10 ;
//Send them to 7 segment displays
uint8_t numberToPrint[]= {digits[digit2],digits[digit1]};
sr.setAll(numberToPrint);
}
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