Second try: 2×5 LED Matrix Arduino controlled

tobi — Tue, 28 Apr 2009 10:14:04 +0000

This time a more sophisticated example. I started to develop an LED Matrix controller and editor in Processing (like every does his first steps on arduino, I think).
By now, you can create a sequence by selecting the LEDs to light up and move over to the next frame. Finished, run it on the Arduino and control the speed – a nice and quick ~~toy~~ way to create any light patterns you can think of easily.

Click here to view the embedded video.

More examples and source code soon to come…

My first Arduion test: 10 LEDs running light

tobi — Fri, 24 Apr 2009 19:05:19 +0000

Check this out:

Click here to view the embedded video.

That my first proper Arduino test, controlling a 10 LED running light. I attached a small button via interrupt as well to start & stop the light. More to come soon, stay tuned!

Here the (very,very ugly) source code:

int ledPin = 3;      // First LED connected to digital pin 13
volatile int stop = LOW;

void setup()
{
  Serial.begin(38400);
  for( int i = 0; i < 10; i++) {
     pinMode(ledPin + i, OUTPUT);
  }
   attachInterrupt(0, stopit, RISING);    //Button attached to Pin 2
}

int i = 0;
void loop()
{
    for( i = 0; i < 7 && !stop; i++) {
      blink(ledPin + i);
    }
    for( i; i >= 1 && !stop; i--) {
      blink(ledPin + i);
    }
    for( i = 0; i < 10 && !stop; i++) {
      blink(ledPin + i);
    }
    for( i; i >= 3 && !stop; i--) {
      blink(ledPin + i);
    }
    for( i; i < 10 && !stop; i++) {
      blink(ledPin + i);
    }
    for( i = 9; i >= 1 && !stop; i--) {
      blink(ledPin + i);
    }
}

void stopit()
{
  delayMicroseconds(1000);
  stop = !stop;
}

void blink( int pin ) {
      digitalWrite(pin, HIGH);
      delay(120 - abs( pin - 8 ) * 20);
      digitalWrite(pin, LOW);
}

uRaNGaTaNG » light

Second try: 2×5 LED Matrix Arduino controlled

My first Arduion test: 10 LEDs running light