Nielsen Robotics Arduino 1 LED

routines

100

What are the names of the 2 routines found in an Arduino Sketch?

void setup() and void loop()

200

Which routine comes first?

setup() is first and loop() is second

300

Which routine repeats itself over and over again?

void loop()

400

What is the last code written for the void loop() routine?

The ending bracket }

500

Why do we write // at the beginning of the arduino sketch?

// is a comment, we write them at the beginning to let the programmer know what the code should do.

pinMode and digitalWrite

100

In which routine is the pinMode() function?

void setup()

200

what does the number 6 do in this piece of code: pinMode(6,INPUT);

The code tells the arduino to use port 6, in this case for receiving input from the circuit.

300

What does LOW do in the following code: digitalWrite(7,LOW);

LOW turns the voltage off for pin 7

400

If I want to use three different ports on my arduino to make three lights go on and off, how many pinMode functions do I need?

Three

500

Which command turns on and off electricity to my circuit with the LED?

digitalWrite()

Debug

100

digitalwrite(6,HIGH);

digitalWrite - missing capital W

200

pinMode(6,OUTPUT)

missing semicolon ; at end of line

300

void loop() ;

routines do not have semicolons to end the line

400

/This program will make an LED blink

comments will have two slashes //

500

delay(200)

Missing semicolon ; to end line

Misc. Q's

100

What does 100 mean in the following code? delay(100);

stop running all code for 10 milliseconds.

200

Debug this line of code: digitalWrite(7,high);

digitalWrite(7,HIGH); HIGH should be in capitals

300

What function creates/initiates a connection with one of the pins on the arduino board?

pinMode()

400

Do you need the void loop() routine?

Yes, every sketch must have void loop() and the void setup().

500

With your team draw a diagram of the wiring for one LED, a bread board, a resistor and the arduino.

See team diagrams...

random()

100

What is the set of numbers that might be used with this statement? random(5)

1,2,3,4,5

200

What does the delay function do for the LED in the following code? digitalWrite(9,HIGH); delay(random(1000));

It pauses the program to leave the light on for 1000 milliseconds or 1 second.

300

Debug this code: delay(random(500);

delay(random(500)); missing second ending parenthesis

400

What is the solution set to the following code: random(100,500)

any number between 100 and 500

500

When can you use a random statement like this: digitalWrite(random(3,5),HIGH);

The random statement will chose between 3,4,5. These are the choices for the pins on the arduino board. If the arduino board has LED's attached to pins 3,4,5 then you can randomly want to turn one of the 3 LED's on.