Evening All,
I'm just getting started with my Arduino nano, and I'm trying to get through the basics to begin with.
I have a set of VW buttons which have a built in LED, they illuminate when a positive is connected.
I have connected the GND (29) to VW-GND (9), and then when I connect +5V (27) to VW-LED Illumination (11). The buttons light up, great!
However, to get me started, I thought.... let me see if I can get the LED to blink, so I'll need to loop OFF/ON signals through Digital? outputs, so I choose GND (29)>VW-GND(9) and D6 (12)>VW-Illumination(11), and ran the below code. But nothing happens, the LED doesn't light up at all.
// constants won't change. Used here to set a pin number:
const int ledPin = 12;// the number of the LED pin
// Variables will change:
int ledState = LOW; // ledState used to set the LED
// Generally, you should use "unsigned long" for variables that hold time
// The value will quickly become too large for an int to store
unsigned long previousMillis = 0; // will store last time LED was updated
// constants won't change:
const long interval = 1000; // interval at which to blink (milliseconds)
void setup() {
// set the digital pin as output:
pinMode(ledPin, OUTPUT);
}
void loop() {
// 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;
// if the LED is off turn it on and vice-versa:
if (ledState == LOW) {
ledState = HIGH;
} else {
ledState = LOW;
}
// set the LED with the ledState of the variable:
digitalWrite(ledPin, ledState);
}
}
