//program by https://www.diyusthad.com
//https://wwww.youtube.com/c/diyusthad
#define pSw 2 //pattern switch pin
#define enter 3 //enter switch pin
#define redLED 5 //red led pin
#define greenLED 6 //green led pin
#define lock 12 //transistor pin
int pattern[4] = {NULL, NULL, NULL, NULL};
int pcode[4] = {1, 2, 2, 1}; //Enter your code 1 for short press and 2 for long press
double presstime = 0, releasetime = 0; //for saving press and release time
double timediff; //for storing time diffrence
bool flag1 = 1, flag2 = 0; //flag values
bool enterSwStatus; //for storing enter switch status
bool patternSwStatus; // for storing patern switch status
void setup() {
pinMode(pSw, INPUT);
pinMode(enter, INPUT);
pinMode(redLED, OUTPUT);
pinMode(greenLED, OUTPUT);
pinMode(lock, OUTPUT); digitalWrite(lock, LOW);
Serial.begin(115200);
digitalWrite(redLED, LOW);
delay(100);
digitalWrite(redLED, HIGH);
digitalWrite(greenLED, LOW);
delay(100);
digitalWrite(greenLED, HIGH);
}
void loop() {
if (digitalRead(pSw) == 1 && flag2 == 0)
{
presstime = millis();
flag1 = 0;
flag2 = 1;
delay(10);
}
if (digitalRead(pSw) == 0 && flag1 == 0)
{
releasetime = millis();
flag1 = 1;
delay(10);
timediff = releasetime - presstime;
if (timediff <= 250)
{
Serial.println("short");
digitalWrite(redLED, LOW);
delay(10);
digitalWrite(redLED, HIGH);
flag2 = 0;
flag1 = 1;
while (true)
{
if (pattern[0] == 0)
{
pattern[0] = 1;
break;
}
if (pattern[1] == 0)
{
pattern[1] = 1;
break;
}
if (pattern[2] == 0)
{
pattern[2] = 1;
break;
}
if (pattern[3] == 0)
{
pattern[3] = 1;
break;
}
break;
}
}
else if (timediff >= 250)
{
Serial.println("long");
digitalWrite(redLED, LOW);
delay(10);
digitalWrite(redLED, HIGH);
flag2 = 0;
flag1 = 1;
while (true)
{
if (pattern[0] == 0)
{
pattern[0] = 2;
break;
}
if (pattern[1] == 0)
{
pattern[1] = 2;
break;
}
if (pattern[2] == 0)
{
pattern[2] = 2;
break;
}
if (pattern[3] == 0)
{
pattern[3] = 2;
break;
}
break;
}
}
patternSwStatus = 1;
}
if (digitalRead(enter) > 0 && enterSwStatus == 0)
{
enterSwStatus = 1;
for (int i = 0; i < 4; i++)
{
Serial.print(pattern[i]);
}
Serial.println("");
if (unlock() == false)
{
Serial.println("wrong");
digitalWrite(redLED, LOW);
delay(200);
digitalWrite(redLED, HIGH);
}
else
{
Serial.println("access granted");
digitalWrite(greenLED, LOW);
digitalWrite(lock, HIGH);
delay(10000);
digitalWrite(greenLED, HIGH);
digitalWrite(lock, LOW);
}
patternSwStatus = 0;
pattern[0] = NULL;
pattern[1] = NULL;
pattern[2] = NULL;
pattern[3] = NULL;
}
if (digitalRead(enter) == 0)
enterSwStatus = 0;
}
int unlock()
{
if (pcode[0] != pattern [0])
return false;
else if (pcode[1] != pattern [1])
return false;
else if (pcode[2] != pattern [2])
return false;
else if (pcode[3] != pattern [3])
return false;
else
return true;
}
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