PIR Motion Alarm system + ESP8266 WiFi module was implemented using FRDM-k64f. PIR sensor will detect motion around its environment and then will send update information to Thingspeak.com website through wifi connection. The main components used in this project: Parallax PIR sensor, LED, ESP8266 WiFi module, 3.0 to 28VDC Voltage range Piezo buzzer.

Dependencies:   ESP8266 mbed

Files at this revision

API Documentation at this revision

Comitter:
mokhanaf
Date:
Thu May 14 17:09:07 2015 +0000
Commit message:
Pir+Wifi

Changed in this revision

ESP8266.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ESP8266.lib	Thu May 14 17:09:07 2015 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/quevedo/code/ESP8266/#77388e8f0697
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 14 17:09:07 2015 +0000
@@ -0,0 +1,116 @@
+
+// PIR Motion Sensor Alarm + ESP8622 WiFi Module + FRDM-k64f
+//PIR sensor can detect change on its surrounding by measuring the change of infra red
+// Then will send high=1 to the FRDM-k64f to flash the LED, Run the Buzzer,
+//Send information through UART serial Port to Tera Term and display how many motion been
+//detected,also will send information to Thingspeak IoT website using WiFi connection 
+
+
+
+#include "mbed.h"
+#include "ESP8266.h"
+#define APIKEY 7X2TD78DKY4459M0
+
+Serial pc(USBTX,USBRX);
+DigitalOut Buzzer(D10); // output
+PwmOut LED(D13); // flashing the led
+DigitalIn inputPin(D2); // pir senor input
+DigitalOut redled(LED1);
+ESP8266 wifi(PTC17, PTC16, 115200); // baud rate for wifi
+char snd[255],rcv[1000];
+
+#define IP "184.106.153.149" // thingspeak.com IP Address
+
+int val = 0; // value to holed the high/low info from pir from pin D2
+int cnt = 0; // counter for motion
+//String thingtweetAPIKey = "TTEVLP931ODJ5GMT";
+
+/************ WiFi INTIALIZATION *********/
+
+void wifi_initialize(void);
+void wifi_send(void);
+
+int main () {
+    
+pc.baud(115200);   
+pc.printf("SET mode to AP\r\n");
+wifi.SetMode(1);    // set ESP mode to 1
+wifi.RcvReply(rcv, 1000);    //receive a response from ESP
+pc.printf("%s",rcv);    //Print the response onscreen
+pc.printf("Conneting to AP\r\n");
+wifi.Join("Network", "Password");     // Your wifi username & Password 
+wifi.RcvReply(rcv, 1000);    //receive a response from ESP
+pc.printf("%s", rcv);    //Print the response onscreen
+wait(8);     //waits for response from ESP
+pc.printf("Getting IP\r\n");    //get IP addresss from the connected AP
+wifi.GetIP(rcv);    //receive an IP address from the AP
+pc.printf("%s", rcv);
+
+    
+ wait(5); // Delay 5 sec to give the pir time to get snapshut of the surrounding
+
+ pc.printf("Initializing WiFi\r\n");
+ //wifi_initialize();
+    while (1) {
+       
+   val = inputPin.read();
+   
+   if (val==0) {   
+    cnt++;
+   pc.printf(" The Sensor is ON And I Detected = %i Till NOW\r\n",cnt);
+   pc.printf("PLEASE STAY AWAY\r\n");
+    pc.printf("Sending WiFi information");
+    wifi_send();
+    redled=1; // when the motion detected turn of the on board red led
+    LED.period(2.0f); // 2 seconds period
+    wait(2.0f);
+    LED.pulsewidth(.02);    // 2 mseconds pulse (on)
+    redled=1;
+    Buzzer = 1;
+   wait(1.5f);
+          }
+    else {
+         
+    pc.printf(" The Sensor is OFF \r\n");
+        LED = 0;
+         Buzzer =0;
+        redled=0; // turn the on board red led on
+          wait(1.5f);
+         }
+        }
+    }
+
+void wifi_send(void){
+   
+  //WIFI updates the Status to Thingspeak servers//
+  strcpy(snd,"AT+CIPMUX=1");//Setting WiFi into MultiChannel mode
+  wifi.SendCMD(snd);
+  pc.printf(snd);
+  wait(2.0);
+  wifi.RcvReply(rcv, 1000);
+  pc.printf("%s", rcv);
+  wait(2);
+  sprintf(snd,"AT+CIPSTART=4,\"TCP\",\"%s\",80",IP); //Initiate connection with THINGSPEAK server 
+  pc.printf(snd);
+  wait(3.0);
+  wifi.RcvReply(rcv, 1000);
+  pc.printf("%s", rcv);
+  wait(2);
+  strcpy(snd,"AT+CIPSEND=4,47");    //Send Number of open connections,Characters to send 
+  wifi.SendCMD(snd);
+  pc.printf(snd);
+  wait(2.0);
+  wifi.RcvReply(rcv, 1000);
+  pc.printf("%s", rcv);
+  wait(2);    
+  sprintf(snd,"GET /update?key=7X2TD78DKY4459M0&field1=%2.2f\r\n",1.0); //Post values to thingspeak
+  pc.printf("%s",snd);
+  wifi.SendCMD(snd);
+  wait(3.0f);
+  wifi.RcvReply(rcv, 1000);
+  pc.printf("%s", rcv);
+  wifi.SendCMD("AT+CIPCLOSE"); //Close the connection to server
+  wifi.RcvReply(rcv, 1000);
+  pc.printf("%s", rcv);
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu May 14 17:09:07 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/8ab26030e058
\ No newline at end of file