LAMP1,2,3 are the light going to control. L1 controlled by PIR sensor that attached to ESP32, L2 and L3 can control via MQTT massage which pass by node-red dashboard, Node-red dash board can be access using any portable device such as phone, Tab etc.
#include <WiFi.h>
#include <PubSubClient.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
// Change the credentials below, so your ESP32 connects to your router
const char* ssid = "Dialog 4G";
const char* password = "YJNHQ102RD8";
// Change the variable to your Raspberry Pi IP address, so it connects to your MQTT broker
const char* mqtt_server = "192.168.0.105";
// Initializes the espClient. You should change the espClient name if you have multiple ESPs running in your home automation system
WiFiClient espClient;
PubSubClient client(espClient);
#define timeSeconds 10 // dealy for PIR motion
const int lamp2 = 17; // lamp2 - LED - GPIO 17 on ESP32 board
const int lamp3 = 5 ; // Lamp3 - LED - GPIO 5 on ESP32 board
const int lamp1 = 14; // lamp1==PIR out // Set GPIOs for lamp1 and PIR Motion Sensor
const int mqttInterrupt = 12; // Interrupt GPIO for PIR mtion sensor trigger input
const int mqttInterruptL2= 13; // interrrupt GPIO for Lamp2
const int mqttInterruptL3= 27; // interrrupt GPIO for Lamp2
boolean toggle =false;
boolean toggle1=false;
// Timer: Auxiliary variables
unsigned long now_delay = millis();
unsigned long lastTrigger = 0;
boolean startTimer = false;
// Checks if motion was detected, sets LED HIGH and starts a timer
void IRAM_ATTR detectsMovement() {
Serial.println("MOTION DETECTED!!!");
digitalWrite(lamp1, HIGH);
startTimer = true;
lastTrigger = millis();
}
void IRAM_ATTR lamp2interrupt() {
toggle=!toggle;
Serial.println("Lamp2 interrupt");
digitalWrite(lamp2, toggle );
}
void IRAM_ATTR lamp3interrupt() {
toggle1=!toggle1;
Serial.println("Lamp3 interrupt");
digitalWrite(lamp3, toggle1 );
}
// Don't change the function below. This functions connects your ESP8266 to your router
void setup_wifi() {
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("WiFi connected - ESP IP address: ");
Serial.println(WiFi.localIP());
}
void callback(String topic, byte* message, unsigned int length) {
Serial.print("Message arrived on topic: ");
Serial.print(topic);
Serial.print(". Message: ");
String messageTemp;
for (int i = 0; i < length; i++) {
Serial.print((char)message[i]);
messageTemp += (char)message[i];
}
Serial.println();
// Feel free to add more if statements to control more GPIOs with MQTT
if(topic=="room/lamp3"){
Serial.print("Changing Room lamp3 to ");
if(messageTemp == "on"){
digitalWrite(lamp3, HIGH);
Serial.print("On");
}
else if(messageTemp == "off"){
digitalWrite(lamp3, LOW);
Serial.print("Off");
}
}
Serial.println();
// If a message is received on the topic room/lamp2, you check if the message is either on or off. Turns the lamp GPIO according to the message
if(topic=="room/lamp2"){
Serial.print("Changing Room lamp2 to ");
if(messageTemp == "on"){
digitalWrite(lamp2, HIGH);
Serial.print("On");
}
else if(messageTemp == "off"){
digitalWrite(lamp2, LOW);
Serial.print("Off");
}
}
Serial.println();
if(topic=="room/pir"){
Serial.print("PIR DETECTED ");
if(messageTemp == "on"){
digitalWrite(lamp1, HIGH);
Serial.print("PIR On");
}
else if(messageTemp == "off"){
digitalWrite(lamp1, LOW);
Serial.print("PIR Off");
}
}
Serial.println();
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Attempt to connect
/*
YOU MIGHT NEED TO CHANGE THIS LINE, IF YOU'RE HAVING PROBLEMS WITH MQTT MULTIPLE CONNECTIONS
To change the ESP device ID, you will have to give a new name to the ESP8266.
Here's how it looks:
if (client.connect("ESP8266Client")) {
You can do it like this:
if (client.connect("ESP1_Office")) {
Then, for the other ESP:
if (client.connect("ESP2_Garage")) {
That should solve your MQTT multiple connections problem
*/
if (client.connect("ESP8266Client")) {
Serial.println("connected");
// Subscribe or resubscribe to a topic
// You can subscribe to more topics (to control more LEDs in this example)
client.subscribe("room/pir");
client.subscribe("room/lamp2");
client.subscribe("room/lamp3");
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void setup() {
Serial.begin(115200);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
// Serial port for debugging purposes
Serial.begin(115200);
// PIR Motion Sensor mode INPUT_PULLUP
pinMode(mqttInterrupt, INPUT_PULLUP);
pinMode(mqttInterruptL2, INPUT_PULLUP);
pinMode(mqttInterruptL3, INPUT_PULLUP);
// Set mqttInterrupt pin as interrupt, assign interrupt function and set RISING mode
attachInterrupt(digitalPinToInterrupt(mqttInterrupt), detectsMovement, RISING);
attachInterrupt(digitalPinToInterrupt(mqttInterruptL2), lamp2interrupt, RISING);
attachInterrupt(digitalPinToInterrupt(mqttInterruptL3), lamp3interrupt, RISING);
// Set lamps to LOW
pinMode(lamp1, OUTPUT);
digitalWrite(lamp1, LOW);
pinMode(lamp2, OUTPUT);
digitalWrite(lamp2, LOW);
pinMode(lamp3, OUTPUT);
digitalWrite(lamp3, LOW);
}
void loop() {
if (!client.connected()) {
reconnect();
}
if(!client.loop())
client.connect("ESP8266Client");
// now = millis();
// return;
Serial.println("im busy .");
delay(500);
// Current time
now_delay = millis();
// Turn off the lamp1 after the number of seconds defined in the timeSeconds variable
if(startTimer && (now_delay - lastTrigger > (timeSeconds*1000))) {
Serial.println("Motion stopped...");
digitalWrite(lamp1, LOW);
startTimer = false;
}
}
