esp32 home automation in Telugu | ir remote, bluetooth, manual switches,eeprom esp32 home automation

 Home automation has become a common practice in many households, with the advent of the Internet of Things (IoT). The ability to control various home appliances such as lights, fans, and other devices has become easier and more accessible through the use of smart devices. The ESP32 is a popular microcontroller board that can be used for home automation. In this article, we will explore how the ESP32 can be used for home automation through the control of home appliances using IR remote, Bluetooth, manual switches, and EEPROM.

 get started with ESP32 home automation, you will need the following components:

quartaz components links :

• An ESP32 development board      buy-now

• A relay module         buy-now

• An IR receiver module   buynow

• wires    buy-now

• breadboard    buy-now

amazon links :

• An ESP32 development board      buy-now

• A relay module         buy-now

• An IR receiver module   buynow

• wires    buy-now

• breadboard    buy-now

 esp32  home automation circuit:

#include "BluetoothSerial.h" #include <Preferences.h> #include <IRremote.h> #include <AceButton.h> using namespace ace_button; BluetoothSerial SerialBT; Preferences pref; #if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED) #error Bluetooth is not enabled! Please run `make menuconfig` to and enable it #endif BluetoothSerial SerialBT; // define the GPIO connected with Relays and switches #define RelayPin1 23 //D23 #define RelayPin2 22 //D22 #define RelayPin3 21 //D21 #define RelayPin4 19 //D19 #define SwitchPin1 13 //D13 #define SwitchPin2 12 //D12 #define SwitchPin3 14 //D14 #define SwitchPin4 27 //D27 #define IR_Button_1 0xC00001 #define IR_Button_2 0xC00002 #define IR_Button_3 0xC00003 #define IR_Button_4 0xC00004 #define IR_All_On 0xC00005 #define IR_All_Off 0xC00006 #define IR_RECV_PIN 35 // D35 (IR receiver pin) IRrecv irrecv(IR_RECV_PIN); decode_results results; char bt_data; bool first_run = true; // Relay State bool toggleState_1 = LOW; //Define integer to remember the toggle state for relay 1 bool toggleState_2 = LOW; //Define integer to remember the toggle state for relay 2 bool toggleState_3 = LOW; //Define integer to remember the toggle state for relay 3 bool toggleState_4 = LOW; //Define integer to remember the toggle state for relay 4 ButtonConfig config1; AceButton button1(&config1); ButtonConfig config2; AceButton button2(&config2); ButtonConfig config3; AceButton button3(&config3); ButtonConfig config4; AceButton button4(&config4); void handleEvent1(AceButton*, uint8_t, uint8_t); void handleEvent2(AceButton*, uint8_t, uint8_t); void handleEvent3(AceButton*, uint8_t, uint8_t); void handleEvent4(AceButton*, uint8_t, uint8_t); // When App button is pushed - switch the state void Bluetooth_handle() { bt_data = SerialBT.read(); // Serial.println(bt_data); delay(20); switch (bt_data) { case 'A': digitalWrite(RelayPin1, LOW); toggleState_1 = 1; pref.putBool("Relay1", toggleState_1); break; // if 'A' received Turn on Relay1 case 'a': digitalWrite(RelayPin1, HIGH); toggleState_1 = 0; pref.putBool("Relay1", toggleState_1); break; // if 'a' received Turn off Relay1 case 'B': digitalWrite(RelayPin2, LOW); toggleState_2 = 1; pref.putBool("Relay2", toggleState_2); break; // if 'B' received Turn on Relay2 case 'b': digitalWrite(RelayPin2, HIGH); toggleState_2 = 0; pref.putBool("Relay2", toggleState_2); break; // if 'b' received Turn off Relay2 case 'C': digitalWrite(RelayPin3, LOW); toggleState_3 = 1; pref.putBool("Relay3", toggleState_3); break; // if 'C' received Turn on Relay3 case 'c': digitalWrite(RelayPin3, HIGH); toggleState_3 = 0; pref.putBool("Relay3", toggleState_3); break; // if 'c' received Turn off Relay3 case 'D': digitalWrite(RelayPin4, LOW); toggleState_4 = 1; pref.putBool("Relay4", toggleState_4); break; // if 'D' received Turn on Relay4 case 'd': digitalWrite(RelayPin4, HIGH); toggleState_4 = 0; pref.putBool("Relay4", toggleState_4); break; // if 'd' received Turn off Relay4 case 'Z': all_SwitchOn(); break; // if 'Z' received Turn on all Relays case 'z': all_SwitchOff(); break; // if 'z' received Turn off all Relays default: break; } } void ir_remote() { if (irrecv.decode(&results)) { switch (results.value) { case IR_Button_1: digitalWrite(RelayPin1, toggleState_1); toggleState_1 = !toggleState_1; pref.putBool("Relay1", toggleState_1); delay(100); break; case IR_Button_2: digitalWrite(RelayPin2, toggleState_2); toggleState_2 = !toggleState_2; pref.putBool("Relay2", toggleState_2); delay(100); break; case IR_Button_3: digitalWrite(RelayPin3, toggleState_3); toggleState_3 = !toggleState_3; pref.putBool("Relay3", toggleState_3); delay(100); break; case IR_Button_4: digitalWrite(RelayPin4, toggleState_4); toggleState_4 = !toggleState_4; pref.putBool("Relay4", toggleState_4); delay(100); break; case IR_All_Off: all_SwitchOff(); break; case IR_All_On: all_SwitchOn(); break; default: break; } //Serial.println(results.value, HEX); irrecv.resume(); } } void all_SwitchOn() { toggleState_1 = 1; digitalWrite(RelayPin1, LOW); pref.putBool("Relay1", toggleState_1); delay(100); toggleState_2 = 1; digitalWrite(RelayPin2, LOW); pref.putBool("Relay2", toggleState_2); delay(100); toggleState_3 = 1; digitalWrite(RelayPin3, LOW); pref.putBool("Relay3", toggleState_3); delay(100); toggleState_4 = 1; digitalWrite(RelayPin4, LOW); pref.putBool("Relay4", toggleState_4); delay(100); } void all_SwitchOff() { toggleState_1 = 0; digitalWrite(RelayPin1, HIGH); pref.putBool("Relay1", toggleState_1); delay(100); toggleState_2 = 0; digitalWrite(RelayPin2, HIGH); pref.putBool("Relay2", toggleState_2); delay(100); toggleState_3 = 0; digitalWrite(RelayPin3, HIGH); pref.putBool("Relay3", toggleState_3); delay(100); toggleState_4 = 0; digitalWrite(RelayPin4, HIGH); pref.putBool("Relay4", toggleState_4); delay(100); } void getRelayState() { //Serial.println("reading data from NVS"); toggleState_1 = pref.getBool("Relay1", 0); digitalWrite(RelayPin1, !toggleState_1); delay(200); toggleState_2 = pref.getBool("Relay2", 0); digitalWrite(RelayPin2, !toggleState_2); delay(200); toggleState_3 = pref.getBool("Relay3", 0); digitalWrite(RelayPin3, !toggleState_3); delay(200); toggleState_4 = pref.getBool("Relay4", 0); digitalWrite(RelayPin4, !toggleState_4); delay(200); } void setup() { Serial.begin(115200); btStart(); //Serial.println("Bluetooth On"); SerialBT.begin("ESP32_BT"); //Bluetooth device name Serial.println("The device started, now you can pair it with bluetooth!"); delay(5000); //Open namespace in read-write mode pinMode(RelayPin1, OUTPUT); pinMode(RelayPin2, OUTPUT); pinMode(RelayPin3, OUTPUT); pinMode(RelayPin4, OUTPUT); pinMode(SwitchPin1, INPUT_PULLUP); pinMode(SwitchPin2, INPUT_PULLUP); pinMode(SwitchPin3, INPUT_PULLUP); pinMode(SwitchPin4, INPUT_PULLUP); //During Starting all Relays should TURN OFF digitalWrite(RelayPin1, !toggleState_1); digitalWrite(RelayPin2, !toggleState_2); digitalWrite(RelayPin3, !toggleState_3); digitalWrite(RelayPin4, !toggleState_4); config1.setEventHandler(button1Handler); config2.setEventHandler(button2Handler); config3.setEventHandler(button3Handler); config4.setEventHandler(button4Handler); button1.init(SwitchPin1); button2.init(SwitchPin2); button3.init(SwitchPin3); button4.init(SwitchPin4); pref.begin("Relay_State", false); irrecv.enableIRIn(); // Enabling IR sensor getRelayState(); //fetch data from NVS Flash Memory delay(200); } void loop() { if (SerialBT.available()) { Bluetooth_handle(); } //Control Switches Manualy button1.check(); button2.check(); button3.check(); button4.check(); ir_remote(); //IR remote Control } void button1Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) { Serial.println("EVENT1"); switch (eventType) { case AceButton::kEventPressed: toggleState_1 = 1; digitalWrite(RelayPin1, LOW); pref.putBool("Relay1", toggleState_1); break; case AceButton::kEventReleased: toggleState_1 = 0; digitalWrite(RelayPin1, HIGH); pref.putBool("Relay1", toggleState_1); break; } } void button2Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) { Serial.println("EVENT2"); switch (eventType) { case AceButton::kEventPressed: toggleState_2 = 1; digitalWrite(RelayPin2, LOW); pref.putBool("Relay2", toggleState_2); break; case AceButton::kEventReleased: toggleState_2 = 0; digitalWrite(RelayPin2, HIGH); pref.putBool("Relay2", toggleState_2); break; } } void button3Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) { Serial.println("EVENT3"); switch (eventType) { case AceButton::kEventPressed: toggleState_3 = 1; digitalWrite(RelayPin3, LOW); pref.putBool("Relay3", toggleState_3); break; case AceButton::kEventReleased: toggleState_3 = 0; digitalWrite(RelayPin3, HIGH); pref.putBool("Relay3", toggleState_3); break; } } void button4Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) { Serial.println("EVENT4"); switch (eventType) { case AceButton::kEventPressed: toggleState_4 = 1; digitalWrite(RelayPin4, LOW); pref.putBool("Relay4", toggleState_4); break; case AceButton::kEventReleased: toggleState_4 = 0; digitalWrite(RelayPin4, HIGH); pref.putBool("Relay4", toggleState_4); break; } }