Hello Friends,
I am working with Arduino Uno. I am writing codes for counter with push buttons. I am using 16X2 lcd. In ascending order, whenever it writes greater than 10, it shows ," B= 10. (B is a variable). but when I run for descending order it counts like…
B= 10 (for 10)
B= 19 (for 09)
B= 18 (for 08) and so on.
The problem is, it shows some parts of previous values. I need to remove this error
I am adding my program…
Plz help me out…
Digital_Pulse_timer_2.ino (2.15 KB)
First, learn how to post your code using the code tags with the # button above the smiley faces. More people will look at it than if they have to download a .ino file.
// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
const int Assend = 6;
const int Desend = 7;
const int Next = 8;
const int Go = 9;
const int Up = 0;
const int S = 0;
int A = 0;
int B = 0;
void setup() {
pinMode(Assend,INPUT);
pinMode(Desend,INPUT);
//*************** set up the LCD's number of columns and rows:***************************
lcd.begin(16, 2);
lcd.setCursor(3, 0);
lcd.print("RTA FURNACE");
delay(2000);
// clear screen
lcd.clear();
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
lcd.setCursor(0, 0);
// print the number of seconds since reset:
// Set temperature in Degree Celcius
lcd.print("Set Temperature");
lcd.setCursor(0, 1);
lcd.print("Ts = ");
lcd.setCursor(6, 1);
//***************************************************
Serial.begin(9600);
}
void loop() {
int Up= digitalRead(Assend);
int Down= digitalRead(Desend);
lcd.setCursor(6, 1);
// For Temperature SET
if(Up == HIGH) {
Upcount();
}
else {
if(Down == HIGH) {
Downcount();
}
}
}
void Upcount() {
++B;
if(B > 9) {
lcd.setCursor(5, 1);
}
lcd.print(B);
//Serial.println(B);
delay(500);
}
void Downcount() {
--B;
if(B < 10) {
lcd.setCursor(4, 1);
}
lcd.print(B);
//Serial.println(B);
delay(500);
}
You are a little off in your cursor positioning. Change the Downcount function to
void Downcount() {
--B;
if(B < 10) {
lcd.setCursor(5, 1);
lcd.print(" ");
}
else
lcd.setCursor (5,1);
lcd.print(B);
//Serial.println(B);
delay(500);
}