diff --git a/BigRoomMyS/platformio.ini b/BigRoomMyS/platformio.ini
index 5adbf43..b6d361d 100644
--- a/BigRoomMyS/platformio.ini
+++ b/BigRoomMyS/platformio.ini
@@ -16,4 +16,5 @@ monitor_speed = 115200
 lib_deps =
   MySensors @ ^2.3.2
   wifwaf/MH-Z19 @ ^1.5.3
-  enjoyneering/AHT10 @ ^1.1.0
\ No newline at end of file
+  enjoyneering/AHT10 @ ^1.1.0
+  featherfly/SoftwareSerial @ ^1.0
\ No newline at end of file
diff --git a/BigRoomMyS/src/main.cpp b/BigRoomMyS/src/main.cpp
index e4d18f8..1319b70 100644
--- a/BigRoomMyS/src/main.cpp
+++ b/BigRoomMyS/src/main.cpp
@@ -1,6 +1,7 @@
 #include <Arduino.h>
 #include <Wire.h>
 #include <AHT10.h>
+#include "MHZ19.h"                                                                                                 
 
 #define MY_DEBUG
 #define MY_RADIO_RF24
@@ -12,12 +13,25 @@
 #define MY_DEFAULT_TX_LED_PIN  (6)  // the PCB, on board LED
 
 #include <MySensors.h>
+#include <SoftwareSerial.h>                               //  Remove if using HardwareSerial or non-uno compatabile device    
 
-#define MOTION (8)
+#define RX_PIN 8
+#define TX_PIN 7
+#define BAUDRATE 9600
+
+#define MOTION (6)
+
+MHZ19 myMHZ19;
+SoftwareSerial mySerial(RX_PIN, TX_PIN);
+
+uint8_t periodMin;
+uint8_t periodMotion;
+uint8_t curDelay;
 
 void presentation();
 void sendDataI(MyMessage msg, uint32_t status);
 void sendDataF(MyMessage msg, float status);
+void sendDataB(MyMessage msg, bool status);
 
 MyMessage msgTemp(0, V_TEMP);
 MyMessage msgHum(1, V_HUM);
@@ -26,27 +40,85 @@ MyMessage msgCO2(3, V_VAR1);
 MyMessage msgLight(3, V_VAR2);
 MyMessage msgTimeWork(3, V_VAR3);
 MyMessage msgTimeMotion(3, V_VAR4);
+MyMessage msgPeriod(3, V_VAR5);
 
 void setup() {
   pinMode(MOTION, INPUT_PULLUP);
+  mySerial.begin(BAUDRATE);                               // Uno example: Begin Stream with MHZ19 baudrate  
+  myMHZ19.begin(mySerial);                                // *Important, Pass your Stream reference here
+  myMHZ19.autoCalibration(false);
+
+/*  char myVersion[4];          
+  myMHZ19.getVersion(myVersion);
+  Serial.print("\nFirmware Version: ");
+  for(byte i = 0; i < 4; i++)
+  {
+    Serial.print(myVersion[i]);
+    if(i == 1)
+      Serial.print(".");    
+  }
+
+  Serial.println("");
+  Serial.print("Range: ");
+  Serial.println(myMHZ19.getRange());   
+  Serial.print("Background CO2: ");
+  Serial.println(myMHZ19.getBackgroundCO2());
+  Serial.print("Temperature Cal: ");
+  Serial.println(myMHZ19.getTempAdjustment());
+  Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") :  Serial.println("OFF");*/
+  periodMin = loadState(0);
+  if(periodMin == 0) periodMin = 1;
+  periodMotion = loadState(1);
+  if(periodMotion == 0) periodMotion = 60;
 }
 
 void loop() {
   static uint32_t cRun = millis();
+  static uint8_t sec = 0;
+  static uint8_t minuts = 0;
   uint16_t LightLev = analogRead(A0);
-  if((cRun + 999) < millis()){
+  if((cRun + 1000) <= millis()){ //Once per second
     cRun = millis();
-    sendDataI(msgTimeWork, cRun);
+    sec++;
+    if(sec == 59){
+      minuts++;
+      sec = 0;
+    }
+    if(minuts == periodMin){
+      int CO2;                                        // Buffer for CO2
+      CO2 = myMHZ19.getCO2();                         // Request CO2 (as ppm)
+
+      if(myMHZ19.errorCode == RESULT_OK)              // RESULT_OK is an alis for 1. Either can be used to confirm the response was OK.
+      {
+          Serial.println(CO2);
+          sendDataI(msgCO2, CO2);
+          wait(50);
+      }
+      sendDataI(msgTimeWork, cRun);
+      minuts = 0;
+    }
   }
 }
 
 void presentation()
 {
-	sendSketchInfo("MidRoom", "1.0");
-	present(0, S_TEMP, "Temp");
-	present(1, S_HUM, "Humid");
-	present(2, S_MOTION, "Motion");
-	present(3, S_CUSTOM, "CO2_Light_Time");
+	sendSketchInfo(F("MidRoom"), F("1.0"));
+	present(0, S_TEMP, F("Temp"));
+	present(1, S_HUM, F("Humid"));
+	present(2, S_MOTION, F("Motion"));
+	present(3, S_CUSTOM, F("CO2_Light_Time"));
+}
+
+void receive(const MyMessage &message)
+{
+  if((message.sensor == 3) && (message.type == V_VAR4)){
+    periodMotion = message.getByte();
+    saveState(1, periodMotion);
+  }
+  if((message.sensor == 3) && (message.type == V_VAR5)){
+    periodMin = message.getByte();
+    saveState(0, periodMin);
+  }
 }
 
 void sendDataI(MyMessage msg, uint32_t val)
@@ -81,7 +153,7 @@ void sendDataF(MyMessage msg, float val)
   }
 }
 
-void sendDataI(MyMessage msg, bool val)
+void sendDataB(MyMessage msg, bool val)
 {
   bool send_data = false;
   uint8_t count = 0;