int inPin = 2; // the number of the input pin
int outPin = 13; // the number of the output pin
int LEDstate = HIGH; // the current state of the output pin
int reading; // the current reading from the input pin
int previous = LOW; // the previous reading from the input pin
// the follow variables are long's because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long time = 0; // the last time the output pin was toggled
long debounce = 50; // the debounce time, increase if the output flickers
void setup()
{
pinMode(inPin, INPUT);
digitalWrite(inPin, HIGH); // turn on the built in pull-up resistor
pinMode(outPin, OUTPUT);
}
void loop()
{
int switchstate;
reading = digitalRead(inPin);
// If the switch changed, due to bounce or pressing...
if (reading != previous) {
// reset the debouncing timer
time = millis();
}
if ((millis() - time) > debounce) {
// whatever the switch is at, its been there for a long time
// so lets settle on it!
switchstate = reading;
// Now invert the output on the pin13 LED
if (switchstate == HIGH)
LEDstate = LOW;
else
LEDstate = HIGH;
}
digitalWrite(outPin, LEDstate);
// Save the last reading so we keep a running tally
previous = reading;
}
I want to add a LED to it so that it would light up when tilted. Can someone tell me how to do that? Also, if I add it, do I have to change my programming?
hamithepenguin:
I want to add a LED to it so that it would light up when tilted. Can someone tell me how to do that? Also, if I add it, do I have to change my programming?
Is that a mercury or ball tilt switch?
If what you wanted is to light up the led when the switch is closed, then you don't even need an Arduino.
kenwood120s:
I think Grumpy_Mike thought you were asking "is it a mercury tilt switch or is it a ball tilt switch", not "is it a tilt switch of some kind".
Oh, I was just asking him whether it was a tilt switch.
Switch, Tilt Switch, Mercury Switch,,,,
It's a fricking switch. It has two states, open, or closed....
orientation of the switch and logic to determine present state, with relation to previous state, will indicate tilt, or no tilt.......
