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Union/Union.ino

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+#include <Keypad.h>
+float peso; //Numero Random
+
+const int EchoPin = 48;
+const int TriggerPin = 50;
+const int ROW_NUM = 4; //four rows
+const int COLUMN_NUM = 3; //three columns
+int cm = 0;
+
+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 = "1034916004"; // change your password here
+String input_password;
+String input_password1;
+
+void setup(){
+  Serial.begin(9600);
+  input_password.reserve(32); // maximum input characters is 33, change if needed
+  pinMode(TriggerPin, OUTPUT);
+   pinMode(EchoPin, INPUT);
+
+  randomSeed(analogRead(0)); // numeros random para los pesos
+  pinMode(0, INPUT);
+}
+
+void loop(){
+  //Serial.println("Ingrese teclas");
+   while(true){
+    char key = keypad.getKey();
+
+  if (key){
+    //Serial.println(key);
+
+    if(key == '*') {
+      input_password = ""; // clear input password
+    } else if(key == '#') {
+      break;
+    } else {
+      input_password += key; // append new character to input password string
+    }
+  }
+ }
+ //Serial.println("Acá estamos con sensor");
+ for(int i = 0; i < 1; i++){
+   cm = ping(TriggerPin, EchoPin);
+   //Serial.print("Distancia: ");
+   //Serial.println(cm);
+   delay(100);
+  }
+  peso = random(9, 46);
+  while(true){
+    char key = keypad.getKey();
+
+  if (key){
+    //Serial.println(key);
+
+    if(key == '*') {
+      input_password1 = ""; // clear input password
+    } else if(key == '#') {
+      break;
+    } else {
+      input_password1 += key; // append new character to input password string
+    }
+  }
+ }
+  Serial.println(String(input_password) + "|" + String(cm) + "|" + String(peso) + "|" + String(input_password1));
+}
+
+int ping(int TriggerPin, int EchoPin) {
+   long duration, distanceCm;
+
+   digitalWrite(TriggerPin, LOW);  //para generar un pulso limpio ponemos a LOW 4us
+   delayMicroseconds(4);
+   digitalWrite(TriggerPin, HIGH);  //generamos Trigger (disparo) de 10us
+   delayMicroseconds(10);
+   digitalWrite(TriggerPin, LOW);
+
+   duration = pulseIn(EchoPin, HIGH);  //medimos el tiempo entre pulsos, en microsegundos
+
+   distanceCm = duration * 10 / 292/ 2;   //convertimos a distancia, en cm
+   return distanceCm;
+}