Hello, I trying to make time relay with arduino and small module display (each number with 7 modules, 2 numbers ).I using delay (1 sec) and each time it make ~ 7700 loops to make 1 min , but each time it time can be from 55 sec to 1 min and 5 sec . Is here any ways to decreased this mismatch of time, 1-2 sec is not problem, but 10 
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Sorry for my bad English.
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I am new in the programing and my code is very very bad, sory 
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#include <EEPROM.h>
const int buttonPin1 = 9;
const int buttonPin2 = 11;
const int buttonPin3 = 12;
int buttonState1 = 0;
int buttonState2 = 0;
int buttonState3 = 0;
bool T = false;
bool T1 = false;
bool T3 = false;
bool T4 = false;
bool T5 = false;
bool plus = true;
bool minus = true;
int analogPin1 = 6;
int val1 = 0;
int analogPin2 = 7;
int val2 = 0;
const int ledPin2 = 2;
const int ledPin3 = 3;
const int ledPin4 = 4;
const int ledPin5 = 5;
const int ledPin6 = 6;
const int ledPin7 = 7;
const int ledPin8 = 8;
const int ledPin9 = 10;
const int ledPin13 = 13;
const int ledPin14 = 14;
const int ledPin15 = 15;
const int ledPin16 = 16;
const int ledPin17 = 17;
const int ledPin18 = 18;
const int ledPin19 = 19;
int save = 0;
int save1 = 0;
int save2 = 0;
bool SAVE = false ;
int n = 0;
int m = 0;
int b = 0;
int s = 0;
int d = 10;
int g = 0;
void setup() {
Serial.begin(9600);
pinMode(buttonPin1, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin3, INPUT);
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
pinMode(ledPin4, OUTPUT);
pinMode(ledPin5, OUTPUT);
pinMode(ledPin6, OUTPUT);
pinMode(ledPin7, OUTPUT);
pinMode(ledPin8, OUTPUT);
pinMode(ledPin9, OUTPUT);
pinMode(ledPin13, OUTPUT);
pinMode(ledPin14, OUTPUT);
pinMode(ledPin15, OUTPUT);
pinMode(ledPin16, OUTPUT);
pinMode(ledPin17, OUTPUT);
pinMode(ledPin18, OUTPUT);
pinMode(ledPin19, OUTPUT);
}
void loop() {
val1 = analogRead(analogPin1);
Serial.println(val1);
val2 = analogRead(analogPin2);
Serial.println(val2);
buttonState3 = digitalRead(buttonPin3);
//SAVESAVESAVESAVESAVEASAVEAS
if (buttonState2 == HIGH)
{T4 = true;}
else
{T4 = false;}
if (buttonState3 == HIGH)
{
SAVE = true;
save = EEPROM[ 0 ];
if (T5 == false)
{save1 = save;}
}
else
{
if(T5 == true)
{T5 == false;
EEPROM[ 0 ] = save1;
}
SAVE = false;
}
if (buttonState3 == HIGH && buttonState2 == HIGH)
{
n = EEPROM[ 0 ];
T = false;
}
if (SAVE == false)
{
if (minus == true)
{
if (val1 > 820)
{minus = false;
if (n > 0 )
{n--;}
}
}
if (val1 < 200)
{minus = true;}
if (plus == true)
{
if (val2 > 820)
{plus = false;
if (n < 99)
{n++;
}
}
}
if (val2 < 200)
{plus = true;}
}
else
{
if (minus == true)
{
if (val1 > 820)
{minus = false;
g = EEPROM[ 0 ];
if (g > 0 )
{T5 = true;
save1--;
}
}
}
if (val1 < 200)
{minus = true;}
if (plus == true)
{
if (val2 > 820)
{plus = false;
g = EEPROM[ 0 ];
if (g < 99)
{save1++;
T5= true;}
}
}
if (val2 < 200)
{plus = true;}
}
buttonState1 = digitalRead(buttonPin1);
buttonState2 = digitalRead(buttonPin2);
digitalWrite(ledPin2, LOW);
digitalWrite(ledPin3, LOW);
digitalWrite(ledPin4, LOW);
digitalWrite(ledPin5, LOW);
digitalWrite(ledPin6, LOW);
digitalWrite(ledPin7, LOW);
digitalWrite(ledPin8, LOW);
digitalWrite(ledPin9, LOW);
digitalWrite(ledPin14, LOW);
digitalWrite(ledPin15, LOW);
digitalWrite(ledPin16, LOW);
digitalWrite(ledPin17, LOW);
digitalWrite(ledPin18, LOW);
digitalWrite(ledPin19, LOW);
if (SAVE == false)
{
m = n/10;
b = n-m*10;
}
else
{ save2 = save1;
m =save2 /10;
b = save2-m*10;
}
if (T == false )
{d = 10;
}
if (d >= 30)
{d = 0;}
if (d <5)
{}
else{
if (b == 0 )
{
digitalWrite(ledPin7, HIGH);
digitalWrite(ledPin15, HIGH);
digitalWrite(ledPin14, HIGH);
digitalWrite(ledPin16, HIGH);
digitalWrite(ledPin6, HIGH);
digitalWrite(ledPin8, HIGH);
}
else if (b == 1)
{
digitalWrite(ledPin6, HIGH);
digitalWrite(ledPin14, HIGH);
}
else if (b == 2)
{
digitalWrite(ledPin9, HIGH);
digitalWrite(ledPin15, HIGH);
digitalWrite(ledPin16, HIGH);
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin6, HIGH);
}
else if (b == 3)
{
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin14, HIGH);
digitalWrite(ledPin16, HIGH);
digitalWrite(ledPin9, HIGH);
digitalWrite(ledPin6, HIGH);
}
else if (b == 4)
{
digitalWrite(ledPin7, HIGH);
digitalWrite(ledPin9, HIGH);
digitalWrite(ledPin6, HIGH);
digitalWrite(ledPin14, HIGH);
}
else if (b == 5)
{
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin7, HIGH);
digitalWrite(ledPin9, HIGH);
digitalWrite(ledPin14, HIGH);
digitalWrite(ledPin16, HIGH);
}
else if (b == 6)
{
digitalWrite(ledPin9, HIGH);
digitalWrite(ledPin7, HIGH);
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin15, HIGH);
digitalWrite(ledPin14, HIGH);
digitalWrite(ledPin16, HIGH);
}
else if (b == 7)
{
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin6, HIGH);
digitalWrite(ledPin14, HIGH);
}
else if (b == 8)
{ digitalWrite(ledPin16, HIGH);
digitalWrite(ledPin15, HIGH);
digitalWrite(ledPin14, HIGH);
digitalWrite(ledPin9, HIGH);
digitalWrite(ledPin6, HIGH);
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin7, HIGH);
}
else if (b == 9)
{
digitalWrite(ledPin8, HIGH);
digitalWrite(ledPin7, HIGH);
digitalWrite(ledPin6, HIGH);
digitalWrite(ledPin14, HIGH);
digitalWrite(ledPin16, HIGH);
digitalWrite(ledPin9, HIGH);
}
if (m == 1)
{ digitalWrite(ledPin5, HIGH);
digitalWrite(ledPin19, HIGH);
}
else if (m == 2)
{
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin18, HIGH);
digitalWrite(ledPin17, HIGH);
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin5, HIGH);
}
else if (m == 3)
{
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin19, HIGH);
digitalWrite(ledPin17, HIGH);
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin5, HIGH);
}
else if (m == 4)
{
digitalWrite(ledPin4, HIGH);
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin5, HIGH);
digitalWrite(ledPin19, HIGH);
}
else if (m == 5)
{
digitalWrite(ledPin4, HIGH);
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin19, HIGH);
digitalWrite(ledPin17, HIGH);
}
else if (m == 6)
{
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin4, HIGH);
digitalWrite(ledPin18, HIGH);
digitalWrite(ledPin19, HIGH);
digitalWrite(ledPin17, HIGH);
}
else if (m == 7)
{
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin5, HIGH);
digitalWrite(ledPin19, HIGH);
}
else if (m == 8)
{ digitalWrite(ledPin17, HIGH);
digitalWrite(ledPin18, HIGH);
digitalWrite(ledPin19, HIGH);
digitalWrite(ledPin2, HIGH);
digitalWrite(ledPin5, HIGH);
digitalWrite(ledPin4, HIGH);
digitalWrite(ledPin3, HIGH);
}
else if (m == 9)
{
digitalWrite(ledPin4, HIGH);
digitalWrite(ledPin3, HIGH);
digitalWrite(ledPin5, HIGH);
digitalWrite(ledPin19, HIGH);
digitalWrite(ledPin17, HIGH);
digitalWrite(ledPin2, HIGH);
}
}
if (buttonState1 == LOW)
{
if (buttonState2 == HIGH && T == false && T1 == false && buttonState3 == LOW && T4 == false)
{
if (n != 0 )
{
T = true;
T1 = true;
}
}
if ( buttonState2 == HIGH && T3 == true && T1 == false)
{T = false;
T1 = true;}
if(buttonState2 == LOW)
{
T1 = false;
}
if (n == 0)
{
T = false;
}
if (T == true && n > 0)
{digitalWrite(ledPin13, HIGH);
T3 = true;
delay(1);
d++;
s++;
if(s >= 7320)
{
n--;
if (n == 0)
{T = false;
T1 = true;
}
s=0;
}
}
else {digitalWrite(ledPin13, LOW);
;
T3 = false;}
}
else
{
digitalWrite(ledPin13, LOW);
d = 10;
}
"very very bad, sory . "
No arguments there 8)
No comments, single letter variables, poor formatting and all that code and now you are having problems.
I would like to help, but I would have to be a mind reader.
Hopefully someone with lots of time can help you.
Show us a good schematic of your circuit. Show us a good image of your wiring.
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