int ledpin1 = 2; // here we declare all the output led pins and all the input analog pins int ledpin2 = 3; int ledpin3 = 4; int ledpin4 = 5; int ledpin5 = 6; int ledpin6 = 7; int analogpin1 = A0; int analogpin2 = A1; int analogpin3 = A2; int analogpin4 = A3; int analogpin5 = A4; int analogpin6 = A5; int threshold = 1021; // here is the threshold value void setup() { // put your setup code here, to run once: pinMode(ledpin1, OUTPUT); // here we set all the output pins to output and all the input pins to input mode pinMode(ledpin2, OUTPUT); pinMode(ledpin3, OUTPUT); pinMode(ledpin4, OUTPUT); pinMode(ledpin5, OUTPUT); pinMode(ledpin6, OUTPUT); pinMode(analogpin1, INPUT); pinMode(analogpin2, INPUT); pinMode(analogpin3, INPUT); pinMode(analogpin4, INPUT); pinMode(analogpin5, INPUT); pinMode(analogpin6, INPUT); } void loop() { // put your main code here, to run repeatedly: int analogvalue1 = analogRead(analogpin1); int analogvalue2 = analogRead(analogpin2); int analogvalue3 = analogRead(analogpin3); int analogvalue4 = analogRead(analogpin4); int analogvalue5 = analogRead(analogpin5); int analogvalue6 = analogRead(analogpin6); if(analogvalue1 > threshold){ digitalWrite(ledpin1, HIGH); digitalWrite(ledpin2, LOW); digitalWrite(ledpin3, LOW); digitalWrite(ledpin4, LOW); digitalWrite(ledpin5, LOW); digitalWrite(ledpin6, LOW); } if(analogvalue2 > threshold){ digitalWrite(ledpin2, HIGH); digitalWrite(ledpin1, LOW); digitalWrite(ledpin3, LOW); digitalWrite(ledpin4, LOW); digitalWrite(ledpin5, LOW); digitalWrite(ledpin6, LOW); } if(analogvalue3 > threshold){ digitalWrite(ledpin3, HIGH); digitalWrite(ledpin1, LOW); digitalWrite(ledpin2, LOW); digitalWrite(ledpin4, LOW); digitalWrite(ledpin5, LOW); digitalWrite(ledpin6, LOW); } if(analogvalue4 > threshold){ digitalWrite(ledpin4, HIGH); digitalWrite(ledpin1, LOW); digitalWrite(ledpin2, LOW); digitalWrite(ledpin3, LOW); digitalWrite(ledpin5, LOW); digitalWrite(ledpin6, LOW); } if(analogvalue5 > threshold){ digitalWrite(ledpin5, HIGH); digitalWrite(ledpin1, LOW); digitalWrite(ledpin2, LOW); digitalWrite(ledpin3, LOW); digitalWrite(ledpin4, LOW); digitalWrite(ledpin6, LOW); } if(analogvalue6 > threshold){ digitalWrite(ledpin6, HIGH); digitalWrite(ledpin1, LOW); digitalWrite(ledpin2, LOW); digitalWrite(ledpin3, LOW); digitalWrite(ledpin4, LOW); digitalWrite(ledpin5, LOW); } }