The document contains code for an Arduino project that receives infrared signals from a remote control, decodes the signals, and uses the values to build a customer number by illuminating individual pins in sequence and reading additional signals on each pin. It defines constants, variables, and functions for setup, looping through the pins to read codes and append them to the customer number string, and printing output to the serial monitor.

1. #include <IRremote.h>
int RECV_PIN = 19;
const int timer = 600; // timing 800 milis
String custNo; //customer number to be decoded
const int digitalStart=11;
const int thisPin2=2;
const int thisPin3=3;
const int thisPin4=4;
const int thisPin5=5;
const int thisPin6=6;
const int thisPin7=7;
const int thisPin8=8;
const int thisPin9=9;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup()
{
Serial.begin(9400);
// Serial.println(custNo);
irrecv.enableIRIn(); // Start the receiver
pinMode(digitalStart, INPUT);
pinMode(thisPin2, OUTPUT);
pinMode(thisPin3, OUTPUT);
pinMode(thisPin4, OUTPUT);
pinMode(thisPin5, OUTPUT);
pinMode(thisPin6, OUTPUT);
pinMode(thisPin7, OUTPUT);
pinMode(thisPin8, OUTPUT);
pinMode(thisPin9, OUTPUT);

2. }
void loop() {
digitalWrite(thisPin2, HIGH);
digitalWrite(thisPin3, HIGH);
digitalWrite(thisPin4, HIGH);
digitalWrite(thisPin5, HIGH);
digitalWrite(thisPin6, HIGH);
digitalWrite(thisPin7, HIGH);
digitalWrite(thisPin8, HIGH);
digitalWrite(thisPin9, HIGH);
int onValue=digitalRead(digitalStart);
if (onValue==HIGH){
delay(timer);
digitalWrite(thisPin2, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
custNo=("");
Serial.println(custNo);
switch (results.value) {
case 50344:
custNo=custNo + "070";
Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;
case 50236:
custNo=custNo + "071";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;

3. case 61492:
custNo=custNo + "072";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "073";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "074";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "075";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "076";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "077";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;

4. case 50300:
custNo=custNo + "078";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "079";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin2, HIGH);
delay(timer);
digitalWrite(thisPin3, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
switch (results.value) {
case 50344:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 50236:
custNo=custNo + "1";
Serial.print(custNo);

5. Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "5";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "6";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "7";
Serial.print(custNo);

6. Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin3, HIGH);
delay(timer);
digitalWrite(thisPin4, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
switch (results.value) {
case 50344:
custNo=custNo + "0";
Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;

7. case 50236:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "5";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "6";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;

8. case 50364:
custNo=custNo + "7";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin4, HIGH);
delay(timer);
digitalWrite(thisPin5, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
switch (results.value) {
case 50344:
custNo=custNo + "0";

9. Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;
case 50236:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "5";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "6";

10. Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "7";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin5, HIGH);
delay(timer);
digitalWrite(thisPin6, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);

11. switch (results.value) {
case 50344:
custNo=custNo + "0";
Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;
case 50236:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "5";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);

12. break;
case 50428:
custNo=custNo + "6";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "7";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin6, HIGH);
delay(timer);
digitalWrite(thisPin7, LOW);
delay(timer);

13. if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
switch (results.value) {
case 50344:
custNo=custNo + "0";
Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;
case 50236:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "5";

14. Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "6";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "7";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin7, HIGH);

15. delay(timer);
digitalWrite(thisPin8, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
switch (results.value) {
case 50344:
custNo=custNo + "0";
Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;
case 50236:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:
custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);

16. break;
case 50376:
custNo=custNo + "5";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "6";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "7";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:
Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}

17. digitalWrite(thisPin8, HIGH);
delay(timer);
digitalWrite(thisPin9, LOW);
delay(timer);
if (irrecv.decode(&results)) {
long int decCode = results.value;
Serial.println(decCode);
switch (results.value) {
case 50344:
custNo=custNo + "0";
Serial.print(custNo);
Serial.println("ttZERO");
delay(400);
break;
case 50236:
custNo=custNo + "1";
Serial.print(custNo);
Serial.println("ttONE");
delay(400);
break;
case 61492:
custNo=custNo + "2";
Serial.print(custNo);
Serial.println("ttTWO");
delay(400);
break;
case 50252:
custNo=custNo + "3";
Serial.print(custNo);
Serial.println("ttTHREE");
delay(400);
break;
case 49232:

18. custNo=custNo + "4";
Serial.print(custNo);
Serial.println("ttFOUR");
delay(400);
break;
case 50376:
custNo=custNo + "5";
Serial.print(custNo);
Serial.println("ttFIVE");
delay(400);
break;
case 50428:
custNo=custNo + "6";
Serial.print(custNo);
Serial.println("ttSIX");
delay(400);
break;
case 50364:
custNo=custNo + "7";
Serial.print(custNo);
Serial.println("ttSEVEN");
delay(400);
break;
case 50300:
custNo=custNo + "8";
Serial.print(custNo);
Serial.println("ttEIGHT");
delay(400);
break;
case 50372:
custNo=custNo + "9";
Serial.print(custNo);
Serial.println("ttNINE");
delay(400);
break;
default:

19. Serial.println("Waiting ...");
}
irrecv.resume(); // Receive the next value
}
digitalWrite(thisPin9, HIGH);
delay(timer);
//custNo=("07");
//Serial.println();
}
else {
digitalWrite(thisPin2, HIGH);
digitalWrite(thisPin3, HIGH);
digitalWrite(thisPin4, HIGH);
digitalWrite(thisPin5, HIGH);
digitalWrite(thisPin6, HIGH);
digitalWrite(thisPin7, HIGH);
digitalWrite(thisPin8, HIGH);
digitalWrite(thisPin9, HIGH);
}
}
Standard deviation of $594, 90% confidence level, and a margin
of error $137 what is the sample size