Seven segment flashes when combined with other programs

Using Arduino Programming Questions
1

excuse me I want to ask,
I'm working on a bank queue system project based on Arduino Mega 2560, the components used are
an ultrasonic sensor as a queue number paper printer, seven-segment as a display viewer,
df player and speaker as service caller,

long story short, after the program, is put together then the seven-segment flashes...
the question is, how to prevent the seven-segment flicker from happening when it is combined with other programs? here is the program

#include "PString.h"
#include "Adafruit_Thermal.h"
#include "SoftwareSerial.h"
#define TX_PIN 15  // Pin 11 Arduino ke RX Printer
#define RX_PIN 14  // Pin 10 Arduino ke TX Printe
SoftwareSerial mySerial(RX_PIN, TX_PIN); 
Adafruit_Thermal printer(&mySerial);  

int hitung_teller = 0;
int hitung_CS = 0;

int trig_teller = 13; // membuat varibel trig di set ke-pin 11 
int echo_teller = 44; // membuat variabel echo di set ke-pin 12 
long durasi_teller, jarak_teller; // membuat variabel durasi dan jarak 

int trig_CS = 45;
int echo_CS = 46;
long durasi_CS, jarak_CS;

const int buttonPin = A4;
long lastDebounceTime = 0;
long debounceDelay = 50;
int buttonState = 0;
int lastButtonState = LOW;

//=================seven segmen=====================//
long lastButton = 0;
long delayAntiBouncing = 50;
byte panggilTeller, panggilCS;
byte seven_seg_digits[10][7] {
 {0, 0, 0, 0, 0, 0, 1},
 {1, 0, 0, 1, 1, 1, 1},
 {0, 0, 1, 0, 0, 1, 0},
 {0, 0, 0, 0, 1, 1, 0},
 {1, 0, 0, 1, 1, 0, 0},
 {0, 1, 0, 0, 1, 0, 0},
 {0, 1, 0, 0, 0, 0, 0},
 {0, 0, 0, 1, 1, 1, 1},
 {0, 0, 0, 0, 0, 0, 0},
 {0, 0, 0, 0, 1, 0, 0},
};

//================SPEAKER====================//
#include <miniMP3.h>

#define belas 12 //belas.mp3
#define puluh 13 //puluh.mp3
#define seratus 14 //seratus.mp3
#define ratus 15 //ratus.mp3
#define seribu 16 //seribu.mp3
#define ribu 17 //ribu.mp3

#define nomorantrian 170 //nomor antrian.mp3
#define teller 190
#define customers 191
  uint32_t NomorPanggilTeller = 0;
  uint16_t NomorPanggilCS2 = 0;
  

//===================SETUP===============//
void setup(){
 
 pinMode(trig_teller, OUTPUT); // set pin trig menjadi OUTPUT
 pinMode(echo_teller, INPUT); // set pin echo menjadi INPUT 
 pinMode(trig_CS, OUTPUT);
 pinMode(echo_CS, INPUT);
 pinMode(buttonPin, INPUT_PULLUP);
 Serial.begin(9600);
 mySerial.begin(9600); // digunakan untuk komunikasi Serial dengan komputer 
 printer.begin();
 mp3_set_serial (Serial1, 17);
 mp3_set_volume(30);
for(char i=2; i<13; i++){
pinMode(i,OUTPUT);
}
pinMode(A0,INPUT); //buttonTeller
pinMode(A2,INPUT); //buttonCS
pinMode(A4,INPUT); //buttonRiset
digitalWrite(A0,HIGH);
digitalWrite(A2,HIGH);
digitalWrite(A4,HIGH);
}

//====================program utama================//
void loop(){
  digitalWrite(trig_teller, LOW);
 delayMicroseconds(8); 
 digitalWrite(trig_teller, HIGH); 
 delayMicroseconds(8); 
 digitalWrite(trig_teller, LOW); 
 delayMicroseconds(8);
 durasi_teller= pulseIn(echo_teller, HIGH); // menerima suara ultrasonic 

 digitalWrite(trig_CS, LOW);
 delayMicroseconds(8); 
 digitalWrite(trig_CS, HIGH); 
 delayMicroseconds(8); 
 digitalWrite(trig_CS, LOW); 
 delayMicroseconds(8);
 durasi_CS= pulseIn(echo_CS, HIGH); // menerima suara ultrasonic 
 
 jarak_teller= (durasi_teller/2) / 29.1; // mengubah durasi menjadi jarak (cm) 
 jarak_CS = (durasi_CS/2) / 29.1; // mengubah durasi menjadi jarak (cm)
 Serial.println(jarak_teller); // menampilkan jarak pada Serial Monitor 
 Serial.println(jarak_CS); // menampilkan jarak pada Serial Monitor 

 if (jarak_teller <= 6) {
   printer.wake();
   printer.setDefault();
   hitung_teller += 1;
   char buffer[40];
   PString str(buffer, sizeof(buffer));
   if (hitung_teller < 10)
   {
     str.print(0);
     if (hitung_teller > 10)
     {
       str.print(1);
     }
   }
  
   str.print(hitung_teller);

   printer.boldOn();
   printer.setSize('L');
   printer.println("Nomor Antrian");
   printer.justify('C');
   printer.setSize('M');
   printer.println(str);
   printer.setSize('M');
   printer.println("Teller");
   printer.feed(3);
   printer.sleep(); 
 }

 else {
   printer.sleep();
 }

 if (jarak_CS < 6) {
   printer.wake();
   printer.setDefault();
   hitung_CS += 1;
   char buffer[40];
   PString str(buffer, sizeof(buffer));
   if (hitung_CS < 10)
   {
     str.print(0);
     if (hitung_CS > 10)
     {
       str.print(1);
     }
   }
 
   str.print(hitung_CS);

   printer.boldOn();
   printer.setSize('L');
   printer.println("Nomor Antrian");
   printer.justify('C');
   printer.setSize('M');
   printer.println(str);
   printer.setSize('M');
   printer.println("Customer service");
   printer.feed(3);
   printer.sleep(); 
 }

 else {
   printer.sleep();
 }

 if (!(digitalRead(buttonPin)))  {
   printer.wake();
   printer.setDefault();
   hitung_teller = 0;
   hitung_CS = 0;
   char buffer[40];
   PString str(buffer, sizeof(buffer));
   printer.justify('C');
   printer.setSize('M');
   printer.println(F("Printer direset"));
   hitung_teller = 0;
   hitung_CS = 0;
   printer.feed(3);
   printer.sleep();
 }

 else {
   printer.sleep();
 }
 
tampilSkor();
tombol();
}

void tampilSkor(){
digitalWrite(10,LOW); digitalWrite(9,HIGH);
digitalWrite(11,HIGH); digitalWrite(12,HIGH);
sevenSegWrite(panggilTeller / 10);
delay(5);
digitalWrite(10,HIGH); digitalWrite(9,LOW);
digitalWrite(11,HIGH); digitalWrite(12,HIGH);
sevenSegWrite(panggilTeller % 10);
delay(5);
digitalWrite(10,HIGH); digitalWrite(9,HIGH);
digitalWrite(11,LOW); digitalWrite(12,HIGH);
sevenSegWrite(panggilCS/ 10);
delay(5);
digitalWrite(10,HIGH); digitalWrite(9,HIGH);
digitalWrite(11,HIGH); digitalWrite(12,LOW);
sevenSegWrite(panggilCS % 10);
delay(5);
}

void sevenSegWrite(byte segment){
 byte pin = 2;
 for (byte segCount = 0; segCount < 7; ++segCount) {
 digitalWrite(pin, seven_seg_digits[segment][segCount]);
 ++pin;
 }
}

void tombol(){
//-----------------tombol Teller =================
if(digitalRead(A0)==0){
if(hitung_teller > panggilTeller){
if ((millis() - lastButton) > delayAntiBouncing ){
panggilTeller++;
mp3_play(nomorantrian);
suaraBilangan(panggilTeller);
 mp3_play(teller);
if(panggilTeller>=100)panggilTeller = 0;
}
lastButton = millis();
}
}

//-----------------tombol CS ====================
if(digitalRead(A2)==0){
if (hitung_CS > panggilCS){
if ((millis() - lastButton) > delayAntiBouncing){
panggilCS++;
mp3_play(nomorantrian);
      suaraBilangan(panggilCS);
      mp3_play(customers);
if(panggilCS>=100)panggilCS= 0;
}
lastButton = millis();
}
}

//---------------tombol RESET
if(digitalRead(A4)==0){
if ((millis() - lastButton) > delayAntiBouncing){
panggilTeller=0;
panggilCS=0;
}
lastButton = millis();
}
}

void suaraBilangan(uint32_t Bilangan)
{
 if (Bilangan < 12)
 {
   mp3_play(Bilangan);
 }
 else if (Bilangan < 20)
 {
   suaraBelasan(Bilangan);
 }
 else if (Bilangan < 100)
 {
   suaraPuluhan(Bilangan);
 }
}
void suaraBelasan(uint8_t Bilangan)
{
 mp3_play(Bilangan - 10);
 mp3_play(belas);
}
void suaraPuluhan(uint8_t Bilangan)
{
 uint8_t puluhan = Bilangan / 10;
 mp3_play(puluhan);
 mp3_play(puluh);

 uint8_t satuan = Bilangan % 10;
 if (satuan)
 {
   suaraBilangan(satuan);
 }
}
2

Maybe using a separate chip for 7-segment LED control like the MAX7219 (MAX7221).

3

It looks like you are using dynamic indication.
Then from the beginning of the loop() to the tampilSkor() call your indication does not work.
Use a 7-segment display with a chip (SparkFun 7-Segment Serial Display, TM1637 4-Digit 7-Segment Display) or a dedicated chip to drive a 7-segment display as recommended by @flashko.

5

what is the program for the seven segment? does anything need to be added to get rid of the blink.

6

Hi, @muhamadrivaldi

Can you please post a circuit diagram?

Because your code is directly controlling each segment, and the code does other things, it cannot update the display regualrly.
You need to have a 7seg display with its own driver that will keep your display alive while your code does other things.
Like in this tutorial;

Using modules like this,

f55fd02584d83c1e
f55fd02584d83c1e2000×2000 295 KB

Tom... :smiley: :+1: :coffee: :australia:

7

You don't hear the answers.
Explore your code.
You must understand every line in your code.
Then we will continue the conversation.

8

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