void setup() { pinMode(7, INPUT_PULLUP); pinMode(6, INPUT_PULLUP); pinMode(5, INPUT_PULLUP); } void loop() { int val = digitalRead(7); int val2 = digitalRead(6); int val3 = digitalRead(5); if (val == LOW) { analogWrite(3, 255); delay(1000); } if (val2 == LOW) { analogWrite(3, 159); delay(1000); } if (val3 == LOW) { analogWrite(3, 64); delay(1000); } }