10, How do you read values from the Arduino on the computer screen? (2pts) a. th

Question

10, How do you read values from the Arduino on the computer screen? (2pts) a. the View' button b. the Serial Monitor buion c. the 'Upload' button d you cannot read values from the Anduino on the screen 11. The code below compares the declared valse of integer "x' against 50 and informs the u whether it is equal or not. Identify the error in the following code and describe the possible (4pts) Int × 25; If (x se) Serial.printin("The value is se) Serial.print1n("The value is not sem) Else 12 write-if' statement to display message only if the value stores m the ? variable is between 10 and 20 (not including the values). 4pts) 13. Completely describe the purpose of the folowing statement (4pts) Int input map(analogRead(Ae), e, 1823, e, 255)

Explanation / Answer

10) The serial monitor helps you in reading values of the program in Arduino. You have to initialize serial monitor with set of commands and declare.

Ans: b

11)

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}

void loop() {
// put your main code here, to run repeatedly:
Int x=25;
If(x=50)
Serial.println("The value is 50");
Else
Serial.println("The value is not 50");
}

The errors are 'Int', 'If', 'Else'.

Since Arduino is case sensitive, it throws error for these instructions

error: 'Int' was not declared in this scope

error: 'If' was not declared in this scope

error: 'Else' was not declared in this scope

To eliminate these errors write the following code:

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}

void loop() {
// put your main code here, to run repeatedly:
int x=25;
if(x=50)
Serial.println("The value is 50");
else
Serial.println("The value is not 50");
}

12)

void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}

void loop() {
// put your main code here, to run repeatedly:
int z=Serial.read();
if(z>10 && z<20)
Serial.println("The value is in 10 to 20 range");
}

13)

int input= map(analogRead(A0),0,1023,0,255)

Map function re-maps a number from one range to another. i.e A low value from one range will be mapped to another low range and high value from one range will be mapped to another high range.

syntax:

datatype map(long x, long Low_in, long High_in, long Low_out, long High_out)

analogRead(A0) reads data from Anaolog pin 0 from Arduino board

0 which is Low_in will be mapped to 0 in Low_out

1023 which is High_in will be mapped to 255 in High_out.

So after map function the range changes from 0 to 1023 to 0 t0 255.

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