I very new to this but I'm wanting to switch an led on with a tilt switch and then have it turn off either by a timer or by switching the tilt switch again. I got the tilt switch working and then tried to hack the blink without delay code into my sketch, but I've had no luck so far.
Here is the sketch
/* Blink without Delay
Turns on and off a light emitting diode(LED) connected to a digital
pin, without using the delay() function. This means that other code
can run at the same time without being interrupted by the LED code.
* LED attached from pin 13 to ground.
* Note: on most Arduinos, there is already an LED on the board
that's attached to pin 13, so no hardware is needed for this example.
by David A. Mellis
modified 8 Feb 2010
by Paul Stoffregen
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay
// constants won't change. Used here to
// set pin numbers:
const int ledPin = 13; // the number of the LED pin
// Variables will change:
int ledState = LOW; // ledState used to set the LED
long previousMillis = 0; // will store last time LED was updated
// the follow variables is a long because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long interval = 10000; // interval at which to blink (milliseconds)
int switchPin = 8;
boolean lastButton = LOW;
boolean currentButton = LOW;
boolean ledOn = false;
boolean debounce(boolean last)
boolean current = digitalRead(switchPin);
if (last != current)
current = digitalRead(switchPin);
currentButton = debounce(lastButton);
if (lastButton == HIGH && currentButton == LOW)
ledOn = !ledOn;
lastButton = currentButton;
// here is where you'd put code that needs to be running all the time.
// check to see if it's time to blink the LED; that is, if the
// difference between the current time and last time you blinked
// the LED is bigger than the interval at which you want to
// blink the LED.
unsigned long currentMillis = millis();
if(currentMillis - previousMillis > interval)
// save the last time you blinked the LED
previousMillis = currentMillis;
// set the LED with the ledState of the variable:
Any help on this matter would be gratefully recieved
long interval set to 10000 for debuging only i'm up this figure when sketch is working