/* to use: enter key aray and make sure that the userentered has the same number of zeros

Transcription

1 to use: enter key aray and make sure that the userentered has the same number of zeros ex: int Keyarray[] = {1,2,3,4; int userentered[] = {0,0,0,0; ex2: int Keyarray[] = {1,2,3,4,1,2,3; int userentered[] = {0,0,0,0,0,0,0; states 0 - locks door.. key does not need to be entered 1 - for key 2 - for key 3 - for key 4 - for key 5 - clear whatever was entered It would be easy to add another user entered state for added security. 5 is new - for key 7 clear whatever was entered pin 13 led 1 blink means it took a reading 3 blinks means passkey entered was cleared //servo stuff #include <Servo.h> Servo myservo; // create servo object to control a servo // a maximum of eight servo objects can be created int pos = 0; // variable to store the servo position //end servo stuff double ArrayTest[] = {0,0,0,0,0,0,0,0; int Keyarray[] = {1,2,3,4,1,2; int userentered[] = {0,0,0,0,0,0; int dooropen = 10; int doorlocked = 170; int userindex = 0; double pingcurrentcm = 0;//temp const int pingpin = 7; void setup() { Serial.begin(115200); pinmode(13, OUTPUT); myservo.write(doorlocked); delay(2000); void loop() { pingcurrentcm = DistanceMeasurePing(pingPin); storevalue(pingcurrentcm); double average = averagearray(); double standdev = standarddeviation(); //arrayoutput(); Serial.print("New Distance added to array:"); Serial.println(pingCurrentCm,7);

2 Serial.print("array average:"); Serial.println(average,7); Serial.print("Standard Deviaion:"); Serial.println(standDev,7); // arrayoutput2(); //EnteredValue converts distance to 1-6. where 5 is clear data, 6 is nothing inputted int EnteredValue = getvalue(average,standdev); Serial.print("EnteredValue:"); Serial.println(EnteredValue); if (EnteredValue == 5){ clearenteredkey(); if (EnteredValue == 0){ myservo.write(doorlocked); delay(2000); if( EnteredValue!= 6 && EnteredValue!= 5){ Serial.println("going into buildkey"); buildkey(enteredvalue); comparekeys(); delay(100); void buildkey(int EnteredValue){ //unserindex will also be used, but it's a global var and doesn't need to be passed //blinkled( Timedelay, numoftimes) userentered[userindex] = EnteredValue; userindex++; void comparekeys(){ int keyindex = (sizeof Keyarray/sizeof(int)); //find the number of entries in array int matchcount = 0; for(int i = 0; i <= (keyindex-1); i++){//since for loop.. if( userentered[i]!= Keyarray[i]){ Serial.println("keys do not match!\n"); else{ matchcount++; //end for if(matchcount == keyindex){ Serial.println("!!!!!!KEYS MATCH!!!!!!! \n"); //this is where you do the action when the keys match! blinkled(50,10); myservo.write(dooropen); delay(3000);

3 clearenteredkey(); //end compare void clearenteredkey(){ //clear data... Serial.println("clearing data...userindex = 0"); int arrayindex = (sizeof userentered/sizeof(int)); //find the number of entries in array for(int i = 0; i <= (arrayindex-1); i++){//since for loop.. userentered[i]= 0; userindex = 0; void arrayoutput2(){ //delete this. and arrayoutput() int arrayindex = (sizeof userentered/sizeof(int)); //find the number of entries in array Serial.print("array size:"); Serial.println(arrayIndex); for(int ii = 0; ii <= (arrayindex-1); ii++){//since for loop.. Serial.print("value for:"); Serial.print(ii); Serial.print(" array value:"); Serial.println(userEntered[ii]); // int getvalue(double average,double standdev){ //if the standard deviation or distance is too high, exit the method. if(standdev > 1 average > 60){ return 6; Serial.println("DATA ENTERED!!"); //blink the LED to show a data point was taken //it would be better to use a piezo speaker or something blinkled(200, 1); //wait a bit to let user go to next spot. delay(1000); //now convert the distance into a single int value if(average < 10){ //0 state Serial.println("!0 state!"); return 0; if(average > 10 && average < 20){ //1 state Serial.println("!1 state!"); return 1; if(average > 20 && average < 30){ //2 state Serial.println("!2 state!"); return 2; if(average > 30 && average < 40){

4 //3 state Serial.println("!3 state!"); return 3; if(average > 40 && average < 50){ //3 state Serial.println("!4 state!"); return 4; if(average > 50 ){ //CLEAR user entered data Serial.println("!5-CLEAR DATA!"); blinkled(100, 3); return 5; //6th state just means nothing is returned. this really shouldn't be needed... return 6; void blinkled(int Timedelay, int numoftimes){ for(int i = 0; i < numoftimes; i++){ digitalwrite(13, HIGH); delay(timedelay); digitalwrite(13, LOW); delay(timedelay); void arrayoutput(){ Serial.print("array size:"); Serial.println(arrayIndex); for(int i = 0; i <= (arrayindex-1); i++){//since for loop.. Serial.print("value for:"); Serial.print(i); Serial.print(" array value:"); Serial.println(ArrayTest[i],7); // void storevalue(double newvalue){ //shifts all the values down and the value sent goes into the 0'th element. last element deleted for(int i = (arrayindex-1); i >= 0 ; i--){ //-1 since for loop.. ArrayTest[i] = ArrayTest[i-1]; ArrayTest[0] = newvalue; double averagearray(){ double sum = 0;

5 for(int i = 0; i <= (arrayindex-1); i++){ //-1 since for loop.. sum += ArrayTest[i]; return (sum/arrayindex); double standarddeviation(){ double sumxsquared = 0; double sumx = 0; //sum up the individual squared values for(int i = 0; i <= (arrayindex-1); i++){ //-1 since for loop.. sumxsquared += pow(arraytest[i],2); //sum up the values then square sumx for(int i = 0; i <= (arrayindex-1); i++){ //-1 since for loop.. sumx += ArrayTest[i]; sumx = pow(sumx,2); return (sumxsquared - sumx/((double)arrayindex))/((double)arrayindex - 1.); double DistanceMeasurePing(int pingpin){ //if not enough time has passed for ping sensor, then just return whatever was last read if((pinguptimecheck + pingdelay) > millis()){ return PingCurrent; PingUpTimeCheck = millis(); // establish variables for duration of the ping, // and the distance result in inches and centimeters: double duration, cm; // The PING))) is triggered by a HIGH pulse of 2 or more microseconds. // Give a short LOW pulse beforehand to ensure a clean HIGH pulse: pinmode(pingpin, OUTPUT); digitalwrite(pingpin, LOW); delaymicroseconds(2); digitalwrite(pingpin, HIGH); delaymicroseconds(5); digitalwrite(pingpin, LOW); // The same pin is used to read the signal from the PING))): a HIGH // pulse whose duration is the time (in microseconds) from the sending // of the ping to the reception of its echo off of an object. pinmode(pingpin, INPUT); duration = pulsein(pingpin, HIGH); // The speed of sound is 340 m/s or 29 microseconds per centimeter. // The ping travels out and back, so to find the distance of the // object we take half of the distance travelled. return duration / 29. / 2.;