ultrasonic
wirng diagram code Uno byte ledPin[] = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13}; // Create array for LED pins int ledDelay; // delay between changes int direction = 1; int currentLED = 0; unsigned long changeTime; int potPin = 2; // select the input pin for the potentiometer void setup() { for (int x=0; x<10; x++) { // set all pins to output pinMode(ledPin[x], OUTPUT); } changeTime = millis(); } void loop() { ledDelay = analogRead(potPin); // read the value from the pot if ((millis() - changeTime) > ledDelay) { // if it has been ledDelay ms since last change changeLED(); changeTime = millis(); } } void changeLED() { for (int x=0; x<10; x++) { // turn off all LED's digitalWrite(ledPin[x], LOW); } digitalWrite(ledPin[currentLED], HIGH); // turn on the current LED currentLED += direction; // increment by the direction value // change direction if we reach the end if (currentLED == 9) {direction = -1;} if (currentLED == 0) {direction = 1;} } ultrasonic with lcd