//CODE CREATED BY "KJ ELECTRONICS" //VISIT MY YOUTUBE CHANNEL LINK "https://www.youtube.com/channel/UCZE35bOktFxu8dIadxuQPLg" //MY INSTRUCTABLES PAGE LINK "http://www.instructables.com/member/KJ%20ELECTRONICS/instructables/" int led1=13; int led2=12; char recieve; void setup() { Serial.begin(9600); pinMode(led1,OUTPUT); pinMode(led1,OUTPUT); } void loop() { if(Serial.available()>0) { recieve=Serial.read(); } { if(recieve=='a') { digitalWrite(led1,HIGH); } if(recieve=='b') { digitalWrite(led1,LOW); } if(recieve=='c') { digitalWrite(led2,HIGH); } if(recieve=='d') { digitalWrite(led2,LOW); } } }