4 Channel Relay Aurduino Home Automation Diagram And Code

Aurduino Code Copy This : int R1 = 9; int R2 = 10; int R3 = 11; int R4 = 12; char data = 0; void setup() { Serial.begin(9600); pinMode(R1, OUTPUT); pinMode(R2, OUTPUT); pinMode(R3, OUTPUT); pinMode(R4, OUTPUT); } void loop() { if (Serial.available()) { data = Serial.read(); Serial.print(data); } if(data == ‘0’){ digitalWrite(R1, 0); } if(data == ‘1’){ digitalWrite(R1, 1); } if(data == ‘2’){ digitalWrite(R2, 0); } if(data == ‘3’){ digitalWrite(R2, 1); } if(data == ‘4’){ digitalWrite(R3, 0); } if(data == ‘5’){ digitalWrite(R3, 1); } if(data == ‘6’){ digitalWrite(R4, 0); } if(data == ‘7’){ digitalWrite(R4, 1); } }