โครงงานประตูรหัส
โครงงานประตูรหัส
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/*
* Created by ArduinoGetStarted.com
*
* This example code is in the public domain
*
* Tutorial page: https://arduinogetstarted.com/tutorials/arduino-keypad-solenoid-lock
*/
#include <Keypad.h>
#define RELAY_PIN A0 // the Arduino pin that controls solenoid lock via relay
#define ROW_NUM 4 // four rows
#define COLUMN_NUM 3 // three columns
char keys[ROW_NUM][COLUMN_NUM] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
byte pin_rows[ROW_NUM] = {9, 8, 7, 6}; //connect to the row pinouts of the keypad
byte pin_column[COLUMN_NUM] = {5, 4, 3}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );
const String password_1 = "1234"; // change your password here
const String password_2 = "56789"; // change your password here
const String password_3 = "901234"; // change your password here
String input_password;
void setup() {
Serial.begin(115200);
input_password.reserve(32); // maximum password size is 32, change if needed
pinMode(RELAY_PIN, OUTPUT); // initialize pin as an output.
digitalWrite(RELAY_PIN, HIGH); // lock the solenoid lock
}
void loop() {
char key = keypad.getKey();
if (key) {
Serial.println(key);
if (key == '*') {
input_password = ""; // reset the input password
} else if (key == '#') {
if (input_password == password_1 || input_password == password_2 || input_password == password_3) {
Serial.println("The password is correct => unlock");
digitalWrite(RELAY_PIN, LOW);
delay(5000);
digitalWrite(RELAY_PIN, HIGH);
} else {
Serial.println("The password is incorrect, try again");
}
input_password = ""; // reset the input password
} else {
input_password += key; // append new character to input password string
}
}
}
#include <Keypad.h>
#define RELAY_PIN A0 // the Arduino pin that controls solenoid lock via relay
#define ROW_NUM 4 // four rows
#define COLUMN_NUM 4 // four columns
char keys[ROW_NUM][COLUMN_NUM] = {
{'1','2','3','A'},
{'4','5','6','B'},
{'7','8','9','C'},
{'*','0','#','D'}
};
byte pin_rows[ROW_NUM] = {9, 8, 7, 6}; // connect to the row pinouts of the keypad
byte pin_column[COLUMN_NUM] = {5, 4, 3, 2}; // connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM );
const String password_1 = "1234"; // change your password here
const String password_2 = "56789"; // change your password here
const String password_3 = "901234"; // change your password here
String input_password;
unsigned long unlockStartTime = 0;
const unsigned long unlockDuration = 3000; // 3 seconds
void setup() {
Serial.begin(9600);
input_password.reserve(32); // maximum password size is 32, change if needed
pinMode(RELAY_PIN, OUTPUT); // initialize pin as an output.
digitalWrite(RELAY_PIN, HIGH); // lock the solenoid lock
}
void loop() {
char key = keypad.getKey();
if (key) {
Serial.println(key);
if (key == '*') {
input_password = ""; // reset the input password
} else if (key == '#') {
if (input_password == password_1 || input_password == password_2 || input_password == password_3) {
Serial.println("The password is correct => unlock");
digitalWrite(RELAY_PIN, LOW);
unlockStartTime = millis(); // record the start time of the unlock process
} else {
Serial.println("The password is incorrect, try again");
}
input_password = ""; // reset the input password
} else {
input_password += key; // append new character to input password string
}
}
// Check if it's time to lock again
if (millis() - unlockStartTime >= unlockDuration) {
digitalWrite(RELAY_PIN, HIGH); // lock the solenoid lock
}
}
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