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4. What will the following Arduino code do? Please explain in a few words. (4 points) You may want to revisit the Arduino coding assignments from previous weeks for this question. In this setup, a motor is connected to an L298n board, and the board is connected to an Arduino by pin11 and pin 10. Thus , these two pins control the motor. A distance sensor (HCSR04) is also connected to Arduino. Its trigger is connected to pin 2, and echo is connected to pin 3. Here is the code: int motorPin1 = 11; int motorPin2 = 10; int trigger_pin = 2; int echo_pin = 3; long pulse_duration, distance_in_inches; void setup() { pinMode(motorPin1, OUTPUT); pinMode(motorPin2, OUTPUT); pinMode(trigger_pin, OUTPUT); pinMode(echo_pin, INPUT); Serial.begin(9600); } void loop() { // read the distance digitalWrite(trigger_pin, LOW); delayMicroseconds(2); digitalWrite(trigger_pin, HIGH); delayMicroseconds(10); digitalWrite(trigger_pin, LOW); pulse_duration = pulseIn(echo_pin, HIGH); distance_in_inches = pulse_duration / 147.82; Serial.println(distance_in_inches); delay(10); // do stuff if (distance_in_inches > 10) { digitalWrite(motorPin1, HIGH); digitalWrite(motorPin2, LOW); } else { if (distance_in_inches < 2) { digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, HIGH); } else { digitalWrite(motorPin1, LOW); digitalWrite(motorPin2, LOW); } } }

          4. What will the following Arduino code do? Please explain in a few words. (4 points)
You may want to revisit the Arduino coding assignments from previous weeks for this question. In this setup,
a motor is connected to an L298n board, and the board is connected to an Arduino by pin11 and pin 10. Thus ,
these two pins control the motor. A distance sensor (HCSR04) is also connected to Arduino. Its trigger is
connected to pin 2, and echo is connected to pin 3.

Here is the code:
int motorPin1 = 11;
int motorPin2 = 10;
int trigger_pin = 2;
int echo_pin = 3;
long pulse_duration, distance_in_inches;

void setup() {
pinMode(motorPin1, OUTPUT);
pinMode(motorPin2, OUTPUT);
pinMode(trigger_pin, OUTPUT);
pinMode(echo_pin, INPUT);
Serial.begin(9600);
}

void loop() {
// read the distance
digitalWrite(trigger_pin, LOW);
delayMicroseconds(2);
digitalWrite(trigger_pin, HIGH);
delayMicroseconds(10);
digitalWrite(trigger_pin, LOW);
pulse_duration = pulseIn(echo_pin, HIGH);
distance_in_inches = pulse_duration / 147.82;

Serial.println(distance_in_inches);
delay(10);

// do stuff
if (distance_in_inches > 10) {
digitalWrite(motorPin1, HIGH);
digitalWrite(motorPin2, LOW);
} else {
if (distance_in_inches < 2) {
digitalWrite(motorPin1, LOW);
digitalWrite(motorPin2, HIGH);
} else {
digitalWrite(motorPin1, LOW);
digitalWrite(motorPin2, LOW);
}
}
}

4. What will the following Arduino code do? Please explain in a few words. (4 points)
You may want to revisit the Arduino coding assignments from previous weeks for this question. In this setup,
a motor is connected to an L298n board, and the board is connected to an Arduino by pin11 and pin 10. Thus ,
these two pins control the motor. A distance sensor (HCSR04) is also connected to Arduino. Its trigger is
connected to pin 2, and echo is connected to pin 3.

Here is the code:
int motorPin1 = 11;
int motorPin2 = 10;
int triggerpin = 2;
int echopin = 3;
long pulseduration, distanceininches;

void setup()
pinMode(motorPin1, OUTPUT);
pinMode(motorPin2, OUTPUT);
pinMode(triggerpin, OUTPUT);
pinMode(echopin, INPUT);
Serial.begin(9600);

void loop()
// read the distance
digitalWrite(triggerpin, LOW);
delayMicroseconds(2);
digitalWrite(triggerpin, HIGH);
delayMicroseconds(10);
digitalWrite(triggerpin, LOW);
pulseduration = pulseIn(echopin, HIGH);
distanceininches = pulseduration / 147.82;

Serial.println(distanceininches);
delay(10);

// do stuff
if (distanceininches > 10)
digitalWrite(motorPin1, HIGH);
digitalWrite(motorPin2, LOW);
else
if (distanceininches < 2)
digitalWrite(motorPin1, LOW);
digitalWrite(motorPin2, HIGH);
else
digitalWrite(motorPin1, LOW);
digitalWrite(motorPin2, LOW);

Added by Linda C.

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