Stap 4: Arduino Sketch
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// Basically the code hear and save the knock and compare it to any other knock to open the door #include <OneSheeld.h> int pin1 = 9; int pin2 = 10; int pin3 = 11; int pin4 = 12; int led4 = 13; int counter = 0; int sec = 0; int hear[20] = {}; int saved[20] = {}; int flagc = 0; int flags = 0; int flagf = 0; int i = 0; int ii = 0; void setup() { OneSheeld.begin(); pinMode(pin1,OUTPUT); pinMode(pin2,OUTPUT); pinMode(pin3,OUTPUT); pinMode(pin4,OUTPUT); pinMode(led4,OUTPUT); } void loop() { if (Keypad.isRowPressed(0) && Keypad.isColumnPressed(3)) { set(); } else if (Keypad.isRowPressed(1) && Keypad.isColumnPressed(3)) { record(); } else if (Keypad.isRowPressed(2) && Keypad.isColumnPressed(3)) { check(); } else { flagf = 0; digitalWrite(pin1,LOW); digitalWrite(pin2,LOW); digitalWrite(pin3,LOW); digitalWrite(pin4,LOW); digitalWrite(led4,LOW); } } void clc () { counter = 0; for (int i=0; i<=20;i++) { hear[i] = 0; saved[i] = 0; } i = 0; ii = 0; digitalWrite(led4,LOW); } void set() { if (flagf == 0) { clc(); } if(Mic.getValue() > 80 && flags == 0) { digitalWrite(led4,HIGH); saved[ii] = millis() - sec; sec= millis(); ii++; flags = 1; } if (Mic.getValue() < 80) { digitalWrite(led4,LOW); flags = 0; } flagf = 1; } void record () { if(Mic.getValue() > 80 && flagc == 0) { digitalWrite(led4,HIGH); hear[i] = millis() - sec; sec= millis(); i++; flagc = 1; } if (Mic.getValue() < 80) { digitalWrite(led4,LOW); flagc = 0; } } void check () { if (i == ii) { for (int j=1;j<=i;j++) { int x = hear[j]; int y =saved[j]; if (x+400 >= y && x-400 <=y ) { counter++; } } if (counter == i) { digitalWrite(pin1,HIGH); digitalWrite(pin2,HIGH); digitalWrite(pin3,HIGH); digitalWrite(pin4,HIGH); } } counter = 0; for (int i=0; i<=20;i++) { hear[i] = 0; } i = 0; }
