Hello, can someone please help.
I have a keypad and an lcd 20 x 4, I want to store 3 key presses in an array "factoryPresses[2]", I dont understand why when I press the last digit (third one) the counter changes to that keypress and the array stores a weird value. Here is my code and images! Thanks!
#include <Servo.h>
#include <Keypad.h>
#include <Wire.h>
#include <LiquidCrystal.h>
Servo servo1;
//rs, en, d4, d5, d6, d7
LiquidCrystal lcd(A0, A1, A2, A3, A4, A5); //pins in the arduino
const int ledOpen = A9;
const int ledClosed = A8;
int pos = 0;
int openDoor = false;
int i = 0;
long factoryPass[2];
int cont = 0;
const byte ROWS = 4;
const byte COLS = 4;
char hexaKeys[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {13, 12, 11, 10}; //row pins in the arduino
byte colPins[COLS] = {9, 8, 7, 6}; //col pins in the arduino
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
void setup() {
servo1.attach(5); //attach to pin 5
lcd.begin(20,4); // initialize lcd 20 x 4
Serial.begin(9600);
}
void loop() {
//factory reset pass = 123
char customKey = customKeypad.getKey();
lcd.setCursor(0,0); // cursor column 0, line 0
lcd.print("Factory Reset Key: ");
if ( i < 3){
if (customKey){
factoryPass[i] = customKey - '0'; //converts key press (char) to int
Serial.println(customKey);
Serial.print(",");
Serial.print(factoryPass[i]);
lcd.setCursor(i,1);
lcd.print(customKey);
Serial.print("counter: ");
Serial.print(i);
i++;
}
//if( i == 2){
// int cont = 1;
// }
}
//if(cont == 1){ //prints array 1 time
// Serial.print("here");
//cont++;
//for (int j=0; j <= 2; j++){
//Serial.print(factoryPass[j]);
//}
}
