Hello Forum,
This is my first post.I have an Arduino Uno. I am trying to built and run "Spaceship Interface". I have error message reading " Board at COM1 is not available.
I copied this sketch from the examples-starter kit.
I may have something wrong with my wiring of the breadboard.
/*
Arduino Starter Kit example
Project 2 - Spaceship Interface
This sketch is written to accompany Project 2 in the Arduino Starter Kit
Parts required:
- one green LED
- two red LEDs
- pushbutton
- 10 kilohm resistor
- three 220 ohm resistors
created 13 Sep 2012
by Scott Fitzgerald
http://www.arduino.cc/starterKit
This example code is part of the public domain.
*/
// Create a global variable to hold the state of the switch. This variable is
// persistent throughout the program. Whenever you refer to switchState, you’re
// talking about the number it holds
int switchstate = 0;
void setup() {
// declare the LED pins as outputs
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
// declare the switch pin as an input
pinMode(2, INPUT);
}
void loop() {
// read the value of the switch
// digitalRead() checks to see if there is voltage on the pin or not
switchstate = digitalRead(2);
// if the button is not pressed turn on the green LED and off the red LEDs
if (switchstate == LOW) {
digitalWrite(3, HIGH); // turn the green LED on pin 3 on
digitalWrite(4, LOW); // turn the red LED on pin 4 off
digitalWrite(5, LOW); // turn the red LED on pin 5 off
}
// this else is part of the above if() statement.
// if the switch is not LOW (the button is pressed) turn off the green LED and
// blink alternatively the red LEDs
else {
digitalWrite(3, LOW); // turn the green LED on pin 3 off
digitalWrite(4, LOW); // turn the red LED on pin 4 off
digitalWrite(5, HIGH); // turn the red LED on pin 5 on
// wait for a quarter second before changing the light
delay(250);
digitalWrite(4, HIGH); // turn the red LED on pin 4 on
digitalWrite(5, LOW); // turn the red LED on pin 5 off
// wait for a quarter second before changing the light
delay(250);
}
}
Thanks,
DougV
New user