Drawing Bot - Explaining the Code

My team and I created to help break down the code

Supplies

Tools from kit;

· 1 Arduino Uno

· 1 Small Breadboard

· 1 Motor Driver

· 1 Button

· 1 Medium Cardboard Box

· 1 Marker

· 1 Large Sheet of Paper

· 2 Hobby Gearmotors

· 2 Wheels

· 15 Jumper Wires

· 1 Battery Pack

· 4 AA Batteries

Link to all of the tools : SparkFun Inventor's Kit for Arduino Uno - v4.1 - KIT-15631 - SparkFun Electronics

Code Step 1 and Writing Setup 1

First step name what the project will be

// Drawing Bot propjet

We than create an integer value for the button and assign it a value of 2 on the Arduino Board

Int button =2;

Int buttonval;

Void set up ()

{

// set up button

pinMode (button, INPUT_PULLUP);

// helps detect when button is pushed

serial.begin(9600);

}

Code Step 2 and Writing Setup 2

int AIN1 = 13;

int AIN2 = 12;

int PWMA = 11;

// These lines declare variables named AIN1, AIN2, and PWMA, assigning them values 13, 12, and 11 respectively. These values represent the pin numbers on the Arduino board that are connected to control the first motor.

// In the void set up

{

// Set up Motors

pinMode(AIN1, OUTPUT);

// This line configures pin AIN1 (which is connected to the first motor) as an output, indicating that it will be used to send signals to control the motor.

pinMode(AIN2, OUTPUT);

// Similarly, this line configures pin AIN2 (another pin for the first motor) as an output.

pinMode(PWMA, OUTPUT);

// This line configures pin PWMA (the PWM pin for controlling the speed of the first motor) as an output

// Set up Button

pinMode(button, INPUT_PULLUP);

//This line configures the button pin as an input with a pull-up resistor enabled. It means that when the button is not pressed, the pin will be in a HIGH state, and when the button is pressed, the pin will be in a LOW state.

Serial.begin(9600);

// This line initializes serial communication with the computer at a baud rate of 9600 bits per second. This allows us to send data from the Arduino to the computer for debugging or other purposes.

}

Code Loop Setup 1

void loop() //* will run as long as the board is on

{

// Create on/off code

// This part of the code checks the button state. If the button Is pressed, some action will take place. If the button Is not pressed it will wait briefly and then check the state again.

buttonval = digitalRead(button); //*Reads the digital state of button

if (buttonval == LOW){ //Button Pressed

else {

//Button not pressed

delay(100);

//Wait and check again

}

Code Loop Setup 2

void loop()

{

// Create on/off code

// This checks if the button is pressed or not and stores that information in a variable called buttonval

buttonval = digitalRead(button);

if (buttonval == LOW){ //Button Pressed

delay(3000); //Delay for three seconds for safety

// Both Forwards for 2.5 seconds, This sends a signal to the motor to spin in one direction.

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW); // This sends another signal to the motor to spin in the same direction.

analogWrite(PWMA, 191); // This controls the speed of the motor. A higher number means faster speed.

// Backwards for 3 seconds

digitalWrite(AIN1, LOW); // This sends a signal to the motor to spin in the opposite direction.

digitalWrite(AIN2, HIGH); // This sends a signal to the motor to spin in the opposite direction.

analogWrite(PWMA, 191); // This controls the speed of the motor

else {

//Button not pressed the motors AIN1 and AINS are set low

digitalWrite(AIN1, LOW); // This sends a signal to the motor to stop spinning.

digitalWrite(AIN2, LOW); // This sends a signal to the motor to stop spinning.

analogWrite(PWMA, 0); // This stops the motor completely by setting its speed to 0.

Loop Step 3 Part 1

void loop()

{

// Create on/off code

buttonval = digitalRead(button);

if (buttonval == LOW){ //Button Pressed

delay(3000); //Delay for three seconds for safety

//Both Forwards for 2.5 seconds

// The first motor (AIN1 and AIN2) moves forward.

Both motors move at a medium speed (PWM value of 191).

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

// The second motor (BIN1 and BIN2) also moves forward.

digitalWrite(BIN1, LOW);

digitalWrite(BIN2, HIGH);

analogWrite(PWMB, 191);

delay(2500);

//Turning for 1 second

// The first motor continues moving forward

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

// The second motor now moves backward, causing the robot to turn

digitalWrite(BIN1, HIGH);

digitalWrite(BIN2, LOW);

analogWrite(PWMB, 191);

delay(1000);

// Forward for 4 seconds, Both motors move forward again

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

digitalWrite(BIN1, LOW);

digitalWrite(BIN2, HIGH);

analogWrite(PWMB, 191);

delay(4000);

//Turning for 2 seconds

// The first motor keeps moving forward

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

// The second motor moves backward again to make the robot turn more.

digitalWrite(BIN1, HIGH);

digitalWrite(BIN2, LOW);

analogWrite(PWMB, 191);

delay(2000);

// Backwards for 3 seconds

// The first motor now moves backward.

The second motor still moves backward

digitalWrite(AIN1, LOW);

digitalWrite(AIN2, HIGH);

analogWrite(PWMA, 191);

Loop Step 3 Part 2

else {

//Button not pressed we stop the motors

digitalWrite(AIN1, LOW);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 0);

delay(100);

//Wait and check again This pauses the program for 0.1 seconds (100 milliseconds).

}

Loop Final Part 1

void loop()

{

// Create on/off code

buttonval = digitalRead(button);

if (buttonval == LOW){ //Button Pressed

delay(3000); //Delay for three seconds for safety

//Both Forwards for 2.5 seconds

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

digitalWrite(BIN1, LOW);

digitalWrite(BIN2, HIGH);

analogWrite(PWMB, 191);

delay(2500);

//Turning for 1 second

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

digitalWrite(BIN1, HIGH);

digitalWrite(BIN2, LOW);

analogWrite(PWMB, 191);

delay(1000);

// Forward for 4 seconds

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

Code Loop Final Part 2

digitalWrite(BIN1, LOW);

digitalWrite(BIN2, HIGH);

analogWrite(PWMB, 191);

delay(4000);

//Turning for 2 seconds

digitalWrite(AIN1, HIGH);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 191);

digitalWrite(BIN1, HIGH);

digitalWrite(BIN2, LOW);

analogWrite(PWMB, 191);

delay(2000);

// Backwards for 3 seconds

digitalWrite(AIN1, LOW);

digitalWrite(AIN2, HIGH);

analogWrite(PWMA, 191);

digitalWrite(BIN1, HIGH);

digitalWrite(BIN2, LOW);

analogWrite(PWMB, 191);

delay(3000);

}

Code Loop Final Part 3

else {

//Button not pressed

digitalWrite(AIN1, LOW);

digitalWrite(AIN2, LOW);

analogWrite(PWMA, 0);

digitalWrite(BIN1, LOW);

digitalWrite(BIN2, LOW);

analogWrite(PWMB, 0);

delay(100);

//Wait and check again

}

Final Code Set Up

int AIN1 = 13;

int AIN2 = 12;

int PWMA = 11;

int BIN1 = 8;

int BIN2 = 9;

int PWMB = 10;

//We than create an integer value for the button and assign it a value of 2

int button = 2;

int buttonval;

void setup()

{

// Set up Motors

pinMode(AIN1, OUTPUT);

pinMode(AIN2, OUTPUT);

pinMode(PWMA, OUTPUT);

pinMode(BIN1, OUTPUT);

pinMode(BIN2, OUTPUT);

pinMode(PWMB, OUTPUT);

// Set up Button

// Helps detect when button is pushed

pinMode(button, INPUT_PULLUP);

Serial.begin(9600);

}