diff --git a/OpenMQTTGateway.ino b/OpenMQTTGateway.ino
index da3aa1e..c93d561 100644
--- a/OpenMQTTGateway.ino
+++ b/OpenMQTTGateway.ino
@@ -183,7 +183,9 @@ void setup()
   #ifdef ZgatewayRFM69
     setupRFM69();
   #endif
-
+  #ifdef ZsensorHCSR501
+    setupHCSR501();
+  #endif
 }
 
 #ifdef ESP8266
@@ -247,6 +249,9 @@ void loop()
     #ifdef ZsensorDHT
       MeasureTempAndHum(); //Addon to measure the temperature with a DHT
     #endif
+    #ifdef ZsensorHCSR501
+      MeasureHCSR501();
+    #endif
     #ifdef ZsensorADC
       MeasureADC(); //Addon to measure the analog value of analog pin
     #endif
diff --git a/User_config.h b/User_config.h
index 5032792..04da5b9 100644
--- a/User_config.h
+++ b/User_config.h
@@ -74,6 +74,8 @@ const byte subnet[] = { 255, 255, 255, 0 }; //ip adress
   #include "config_IR.h"
   #define ZgatewayBT
   #include "config_BT.h"
+  #define ZsensorHCSR501
+  #include "config_HCSR501.h"
   #define ZsensorADC
   #include "config_ADC.h"
   #define ZsensorBH1750
@@ -100,6 +102,8 @@ const byte subnet[] = { 255, 255, 255, 0 }; //ip adress
   //#include "config_BH1750.h"
   //#define ZsensorBME280
   //#include "config_BME280.h"
+  //#define ZsensorHCSR501
+  //#include "config_HCSR501.h"
   //#define ZsensorADC
   //#include "config_ADC.h"
   //#define ZgatewayRFM69 not tested
diff --git a/ZsensorHCSR501.ino b/ZsensorHCSR501.ino
new file mode 100644
index 0000000..53815c7
--- /dev/null
+++ b/ZsensorHCSR501.ino
@@ -0,0 +1,59 @@
+/*  
+  OpenMQTTGateway Addon  - ESP8266 or Arduino program for home automation 
+
+   Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal  and a MQTT broker 
+   Send and receiving command by MQTT
+ 
+    HC SR-501 reading Addon
+  
+    Copyright: (c)Florian ROBERT
+    
+    Contributors:
+    - 1technophile
+  
+    This file is part of OpenMQTTGateway.
+    
+    OpenMQTTGateway is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenMQTTGateway is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifdef ZsensorHCSR501
+
+void setupHCSR501() {
+  pinMode(HCSR501_PIN, INPUT);     // declare HC SR-501 pin as input
+}
+
+void MeasureHCSR501(){
+  if (millis() > TimeBeforeStartHCSR501) {//let time to init the PIR sensor
+  static int pirState = LOW;
+  int PresenceValue = digitalRead(HCSR501_PIN);
+  #ifdef ESP8266
+    yield();
+  #endif
+  if (PresenceValue == HIGH) { 
+    if (pirState == LOW) {
+     // turned on
+     client.publish(subjectHCSR501toMQTT,"true");
+      trc(F("HC SR501 Motion detected"));
+      pirState = HIGH;
+    }
+    } else {
+      if (pirState == HIGH){
+        // turned off
+        client.publish(subjectHCSR501toMQTT,"false");
+        trc(F("HC SR501 Motion ended"));
+        pirState = LOW;
+      }
+    }
+  }
+}
+#endif
diff --git a/config_HCSR501.h b/config_HCSR501.h
new file mode 100644
index 0000000..140c7e8
--- /dev/null
+++ b/config_HCSR501.h
@@ -0,0 +1,38 @@
+/*  
+  OpenMQTTGateway  - ESP8266 or Arduino program for home automation 
+
+   Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal  and a MQTT broker 
+   Send and receiving command by MQTT
+ 
+   This files enables to set your parameter for the HC SR-501 sensor
+  
+    Copyright: (c)Florian ROBERT
+  
+    This file is part of OpenMQTTGateway.
+    
+    OpenMQTTGateway is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenMQTTGateway is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*----------------------------USER PARAMETERS-----------------------------*/
+/*-------------DEFINE YOUR MQTT PARAMETERS BELOW----------------*/
+#define subjectHCSR501toMQTT   "home/HCSR501toMQTT"
+#define TimeBeforeStartHCSR501 60000 //define the time necessary for HC SR501 init
+
+/*-------------------PIN DEFINITIONS----------------------*/
+#ifdef ESP8266
+  #define HCSR501_PIN D5
+#else
+  #define HCSR501_PIN D7
+#endif
+