Arduino Projects: Difference between revisions
→Running Lights with Speed Control
Line 987:
=Running Lights with Speed Control=
http://arduino.stackexchange.com/questions/19605/running-light-without-delay-and-a-potentiometer
// Sketch re: http://arduino.stackexchange.com/questions/19605/running-light-without-delay-and-a-potentiometer
// Set constants for pins with LEDs
enum { led1 = 13, led2 = 12, led3 = 11, led4 = 10, led5 = 9, led6 = 8, led7 = 7, led8 = 6, led9 = 5, led10 = 4};
// Make an array with the LED pin numbers
byte ledPins[] = { led1, led2, led3, led4, led5, led6, led7, led8, led9, led10 };
// # of entries in ledPins:
enum { numLeds = sizeof(ledPins) / sizeof ledPins[0]};
//count to track which LEDs are HIGH and which are LOW
int count = numLeds-1; // Will roll over to 0
// To store last time LED was updated
unsigned long previousMillis = 0;
void setup() {
// initialize digital pin outputs
for (byte i=0; i<numLeds; ++i)
pinMode(ledPins[i], OUTPUT);
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}
// loop() runs over and over again forever:
void loop() {
unsigned long currentMillis = millis();
// read input on analog pin 0:
int deli = analogRead(A0);
float voltage = deli * (5.0 / 1023.0);
// Print out the value and corresponding voltage you read:
// Serial.println("Value: %d and Voltage: %f", pause, voltage);
Serial.print("Value: ");
Serial.println(deli);
Serial.print("Volts: ");
Serial.println(voltage);
if (currentMillis - previousMillis >= deli) {
// Save the last time we blinked the LED
previousMillis = currentMillis;
// Turn off current LED, turn on next one
digitalWrite(ledPins[count], LOW);
count = (count+1) % numLeds;
digitalWrite(ledPins[count], HIGH);
}
}
= LED Matrix Clock =
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