Hi i am making a countdown timer and ther is for some reason space when i start to put a new time in after last time ended
here is the code
#include <LiquidCrystal.h>
#include <Keypad.h>
const byte ROWS = 4; // Four rows
const byte COLS = 4; // Three columns
long int set1;
long int set2;
long int set3;
long int set4;
long int j;
String hours;
String minutes;
String seconds;
// Define the Keymap
char keys[ROWS][COLS] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte rowPins[ROWS] = { 6, 7, 8, 9 };// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins
byte colPins[COLS] = { 10, 11, 12, 13 };// Connect keypad COL0, COL1 and COL2 to t
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
LiquidCrystal lcd(A0, A1, 5, 4, 3, 2); // Creates an LC object. Parameters: (rs, enable, d4, d5, d6, d7)
int t1, t2, t3, t4, t5, t6;
int r1, r2, r3;
boolean feed = true; // condition for alarm
char key;
String r[8];
void setFeedingTime()
{
feed = true;
int i=0;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Set feeding Time");
lcd.clear();
lcd.print("HH:MM:SS");
lcd.setCursor(0,1);
while(1){
key = kpd.getKey();
char j;
if(key!=NO_KEY){
lcd.setCursor(j,1);
lcd.print(key);
r[i] = key-48;
i++;
j++;
if (j==2 || j == 5)
{
lcd.print(":"); j++;
}
delay(500);
}
if (key == 'D')
{key=0; break; }
}
lcd.clear();
}
void setup()
{
lcd.begin(16,2);
Serial.begin(9600);
pinMode(A0, OUTPUT);
pinMode(A1, OUTPUT);
pinMode(A3, INPUT);
pinMode(A4, OUTPUT);
}
void loop()
{
lcd.setCursor(0,0);
lcd.print("Arduino Timer");
//Serial.println(A3);
if (digitalRead(A3)==1) //
{
lcd.clear();
setFeedingTime();
for(int i = 0; i < 6; i++) // this for loop is used to get the value of the feeding time and print it serially
{
Serial.print(r[i]);
Serial.println();
}
hours = String (r[0]) + String (r[1]) ; //combining two separate int values of r[0] and r[1] into one string and save it to "hours"
minutes = String (r[2]) + String (r[3]) ; //combining two separate int values of r[2] and r[3] into one string and save it to "minutes"
seconds = String (r[4]) + String (r[5]) ; //combining two separate int values of r[4] and r[5] into one string and save it to "seconds"
set1 = (hours.toInt()*3600); //converting hours into seconds
set2 = (minutes.toInt() * 60); //converting minutes into seconds
set3 = seconds.toInt();
set4 = (hours.toInt() * 3600)+ (minutes.toInt() * 60) + seconds.toInt(); //adding set1, set2 and set3 together in set4
Serial.print("set4");
Serial.print(set4);
Serial.println();
lcd.setCursor(0,0);
lcd.print("Countdown begins");
delay(1000);
lcd.clear();
for(long int j = set4; j >= 0; j--) // this for loopis used to decrease the total time in seconds
{
Serial.println(j);
lcd.setCursor(0,0);
lcd.print("HH:MM:SS");
long int HH = j / 3600; // converting the remaining time into remaining hours
lcd.setCursor(0,1);
Serial.println(HH);
if (HH < 10) { lcd.print('0'); }
lcd.print(HH);
lcd.print(":");
long int MM = (j - (HH*3600))/60 ; //converting the remaining time into remaining minutes
lcd.setCursor(3,1);
Serial.println(MM);
if (MM < 10) { lcd.print('0'); }
lcd.print(MM);
lcd.print(":");
long int SS = j - ((HH*3600)+(MM*60)); //converting the remaining time into remaining seconds
lcd.setCursor(6,1);
Serial.println(SS);
if (SS < 10) { lcd.print('0'); }
lcd.print(SS);
delay(1000);
if (digitalRead(A3)==1){break;}
if (j == 0)
{
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Timer Stop");
lcd.setCursor(2,1);
lcd.print("-Ring-Ring-");
for(int k =0; k<= 1; k++) //this for loop is used for the buzzer to beep 100 time as the timer reaches zero
{
digitalWrite(A4,HIGH);
delay(300);
digitalWrite(A4,LOW);
delay(300);
if (digitalRead(A3)==1){break;}
lcd.clear();
}
}
}
}
}
Verwende dieses Symbol um Code zu posten
[sterretje edit]
made image visible
[sterretje end]
