/********************************************************************************** * TITLE: WiFi (SinricPro) + IR + Manual Switch (latched) control 4 Relays using Arduino EEPROM * Click on the following links to learn more. * YouTube Video: https://youtu.be/YpddzFyWMHA * Related Blog : https://iotcircuithub.com/arduino-iot-project-with-google-assistant-alexa/ * by Tech StudyCell * * Download the libraries * IRremote 3.5.2 Library: https://github.com/Arduino-IRremote/Arduino-IRremote * Arduino-timer 2.3.1 Library: https://github.com/contrem/arduino-timer **********************************************************************************/ #include #include #include #include auto timer = timer_create_default(); // create a timer with default settings SoftwareSerial mySerial(2, 3); // RX, TX D2, D3 // define the GPIO connected with Relays and switches #define RelayPin1 4 //D4 #define RelayPin2 5 //D5 #define RelayPin3 6 //D6 #define RelayPin4 7 //D7 #define SwitchPin1 10 //D10 #define SwitchPin2 11 //D11 #define SwitchPin3 12 //D12 #define SwitchPin4 13 //D13 #define IR_RECV_PIN A0 //A0 #define WIFI_LED A3 //A3 //Update the HEX code of IR Remote 0x #define IR_Button_1 0x80BF49B6 #define IR_Button_2 0x80BFC936 #define IR_Button_3 0x80BF33CC #define IR_Button_4 0x80BF718E #define IR_All_Off 0x80BF3BC4 #define IR_All_On 0x80BFF10E IRrecv irrecv(IR_RECV_PIN); decode_results results; // Switch State bool SwitchState_1 = LOW; bool SwitchState_2 = LOW; bool SwitchState_3 = LOW; bool SwitchState_4 = LOW; String bt_data; // variable for storing bluetooth data String pinStatus = "0000"; void relayOnOff(int relay){ switch(relay){ case 1: digitalWrite(RelayPin1, !digitalRead(RelayPin1)); // change state for relay-1 EEPROM.update(0,digitalRead(RelayPin1)); delay(100); break; case 2: digitalWrite(RelayPin2, !digitalRead(RelayPin2)); // change state for relay-2 EEPROM.update(1,digitalRead(RelayPin2)); delay(100); break; case 3: digitalWrite(RelayPin3, !digitalRead(RelayPin3)); // change state for relay-3 EEPROM.update(2,digitalRead(RelayPin3)); delay(100); break; case 4: digitalWrite(RelayPin4, !digitalRead(RelayPin4)); // change state for relay-4 EEPROM.update(3,digitalRead(RelayPin4)); delay(100); break; default : break; } } void eepromState() { digitalWrite(RelayPin1, EEPROM.read(0)); delay(200); digitalWrite(RelayPin2, EEPROM.read(1)); delay(200); digitalWrite(RelayPin3, EEPROM.read(2)); delay(200); digitalWrite(RelayPin4, EEPROM.read(3)); delay(200); } void wifi_control() { if(mySerial.available()) { bt_data = mySerial.readString(); Serial.println(bt_data); if(bt_data == "A1") { digitalWrite(RelayPin1, LOW); EEPROM.update(0,LOW); } // if 'A1' received Turn on Relay1 if(bt_data == "A0") { digitalWrite(RelayPin1, HIGH); EEPROM.update(0,HIGH); } // if 'A0' received Turn off Relay1 if(bt_data == "B1") { digitalWrite(RelayPin2, LOW); EEPROM.update(1,LOW); } // if 'B1' received Turn on Relay2 if(bt_data == "B0") { digitalWrite(RelayPin2, HIGH); EEPROM.update(1,HIGH); } // if 'B0' received Turn off Relay2 if(bt_data == "C1") { digitalWrite(RelayPin3, LOW); EEPROM.update(2,LOW); } // if 'C1' received Turn on Relay3 if(bt_data == "C0") { digitalWrite(RelayPin3, HIGH); EEPROM.update(2,HIGH); } // if 'C0' received Turn off Relay3 if(bt_data == "D1") { digitalWrite(RelayPin4, LOW); EEPROM.update(3,LOW); } // if 'D1' received Turn on Relay4 if(bt_data == "D0") { digitalWrite(RelayPin4, HIGH); EEPROM.update(3,HIGH); } // if 'D0' received Turn off Relay4 if(bt_data == "W1") { digitalWrite(WIFI_LED, HIGH); } // if 'W1' Turn on WiFi LED if(bt_data == "W0") { digitalWrite(WIFI_LED, LOW); } // if 'W0' Turn off WiFi LED delay(20); } } void ir_remote(){ if (irrecv.decode(&results)) { switch(results.value){ case IR_Button_1: relayOnOff(1); break; case IR_Button_2: relayOnOff(2); break; case IR_Button_3: relayOnOff(3); break; case IR_Button_4: relayOnOff(4); break; case IR_All_Off: all_Switch_OFF(); break; case IR_All_On: all_Switch_ON(); break; default : break; } //Serial.println(results.value, HEX); irrecv.resume(); } } void all_Switch_ON(){ digitalWrite(RelayPin1, LOW); EEPROM.update(0,LOW); delay(100); digitalWrite(RelayPin2, LOW); EEPROM.update(1,LOW); delay(100); digitalWrite(RelayPin3, LOW); EEPROM.update(2,LOW); delay(100); digitalWrite(RelayPin4, LOW); EEPROM.update(3,LOW); delay(100); } void all_Switch_OFF(){ digitalWrite(RelayPin1, HIGH); EEPROM.update(0,HIGH); delay(100); digitalWrite(RelayPin2, HIGH); EEPROM.update(1,HIGH); delay(100); digitalWrite(RelayPin3, HIGH); EEPROM.update(2,HIGH); delay(100); digitalWrite(RelayPin4, HIGH); EEPROM.update(3,HIGH); delay(100); } void manual_control() { if (digitalRead(SwitchPin1) == LOW && SwitchState_1 == LOW) { digitalWrite(RelayPin1, LOW); EEPROM.update(0,LOW); SwitchState_1 = HIGH; } if (digitalRead(SwitchPin1) == HIGH && SwitchState_1 == HIGH) { digitalWrite(RelayPin1, HIGH); EEPROM.update(0,HIGH); SwitchState_1 = LOW; } if (digitalRead(SwitchPin2) == LOW && SwitchState_2 == LOW) { digitalWrite(RelayPin2, LOW); EEPROM.update(1,LOW); SwitchState_2 = HIGH; } if (digitalRead(SwitchPin2) == HIGH && SwitchState_2 == HIGH) { digitalWrite(RelayPin2, HIGH); EEPROM.update(1,HIGH); SwitchState_2 = LOW; } if (digitalRead(SwitchPin3) == LOW && SwitchState_3 == LOW) { digitalWrite(RelayPin3, LOW); EEPROM.update(2,LOW); SwitchState_3 = HIGH; } if (digitalRead(SwitchPin3) == HIGH && SwitchState_3 == HIGH) { digitalWrite(RelayPin3, HIGH); EEPROM.update(2,HIGH); SwitchState_3 = LOW; } if (digitalRead(SwitchPin4) == LOW && SwitchState_4 == LOW) { digitalWrite(RelayPin4, LOW); EEPROM.update(3,LOW); SwitchState_4 = HIGH; } if (digitalRead(SwitchPin4) == HIGH && SwitchState_4 == HIGH) { digitalWrite(RelayPin4, HIGH); EEPROM.update(3,HIGH); SwitchState_4 = LOW; } } void sendStatus(){ pinStatus = String(!digitalRead(RelayPin1)) + String(!digitalRead(RelayPin2)) + String(!digitalRead(RelayPin3)) + String(!digitalRead(RelayPin4)); mySerial.print(pinStatus); } void setup() { Serial.begin(9600); mySerial.begin(9600); irrecv.enableIRIn(); // Start the receiver pinMode(RelayPin1, OUTPUT); pinMode(RelayPin2, OUTPUT); pinMode(RelayPin3, OUTPUT); pinMode(RelayPin4, OUTPUT); pinMode(WIFI_LED, 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, HIGH); digitalWrite(RelayPin2, HIGH); digitalWrite(RelayPin3, HIGH); digitalWrite(RelayPin4, HIGH); digitalWrite(WIFI_LED, LOW); delay(500); eepromState(); // call the toggle_led function every 2000 millis (2 seconds) timer.every(2000, sendStatus); } void loop() { ir_remote(); wifi_control(); manual_control(); timer.tick(); // tick the timer }