Circuit Documentation

Summary

This circuit is designed to control two DC motors and three LEDs using an Arduino UNO. The circuit also includes three Hall sensors to detect magnetic fields and control the motors and LEDs accordingly. The L293D motor driver is used to drive the motors, and resistors are used to limit the current through the LEDs and Hall sensors. A 9V battery powers the circuit.

Component List

1. L293D Motor Driver

   • Description: Motor driver IC used to control the direction and speed of two DC motors.
   • Pins: enable 1, input 1, output 1, gnd, output 2, input 2, vs, vss, input 4, output 4, output 3, input 3, enable 2

2. Arduino UNO

   • Description: Microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

3. DC Motor

   • Description: Standard DC motor.
   • Pins: pin 1, pin 2

4. 9V Battery

   • Description: Power source for the circuit.
   • Pins: -, +

5. LED: Two Pin (red)

   • Description: Red LED.
   • Pins: cathode, anode

6. Resistor

   • Description: Resistor with a resistance of 200 Ohms.
   • Pins: pin1, pin2

7. Hall Sensor

   • Description: Sensor used to detect magnetic fields.
   • Pins: -, +, S

Wiring Details

L293D Motor Driver

• gnd connected to:

  • Resistor pin1
  • Hall Sensor +
  • 9V Battery -
  • Arduino UNO GND

• vss connected to:

  • Arduino UNO 5V

• vs connected to:

  • 9V Battery +

• enable 1 connected to:

  • Arduino UNO D10

• input 1 connected to:

  • Arduino UNO D5

• output 1 connected to:

  • DC Motor pin 1

• output 2 connected to:

  • DC Motor pin 2

• input 2 connected to:

  • Arduino UNO D6

• input 4 connected to:

  • Arduino UNO D7

• output 4 connected to:

  • DC Motor pin 1

• output 3 connected to:

  • DC Motor pin 2

• input 3 connected to:

  • Arduino UNO D8

• enable 2 connected to:

  • Arduino UNO D11

Arduino UNO

• GND connected to:

  • L293D Motor Driver gnd

• 5V connected to:

  • L293D Motor Driver vss

• D3 connected to:

  • LED anode

• D2 connected to:

  • LED anode

• D12 connected to:

  • LED anode

• A0 connected to:

  • Hall Sensor S
  • Resistor pin1

• A1 connected to:

  • Hall Sensor S
  • Resistor pin1

• A2 connected to:

  • Hall Sensor S
  • Resistor pin1

• D10 connected to:

  • L293D Motor Driver enable 1

• D5 connected to:

  • L293D Motor Driver input 1

• D6 connected to:

  • L293D Motor Driver input 2

• D7 connected to:

  • L293D Motor Driver input 4

• D8 connected to:

  • L293D Motor Driver input 3

• D11 connected to:

  • L293D Motor Driver enable 2

DC Motor

• pin 1 connected to:

  • L293D Motor Driver output 1
  • L293D Motor Driver output 4

• pin 2 connected to:

  • L293D Motor Driver output 2
  • L293D Motor Driver output 3

9V Battery

• - connected to:

  • L293D Motor Driver gnd

• + connected to:

  • L293D Motor Driver vs

LED: Two Pin (red)

• anode connected to:

  • Arduino UNO D3
  • Arduino UNO D2
  • Arduino UNO D12

• cathode connected to:

  • Resistor pin2

Resistor

• pin1 connected to:

  • Hall Sensor +
  • Hall Sensor S
  • Arduino UNO A0
  • Arduino UNO A1
  • Arduino UNO A2

• pin2 connected to:

  • Hall Sensor -
  • LED cathode

Hall Sensor

• + connected to:

  • Resistor pin1

• - connected to:

  • Resistor pin2

• S connected to:

  • Resistor pin1
  • Arduino UNO A0
  • Arduino UNO A1
  • Arduino UNO A2

Documented Code

Arduino UNO Code

const int hallSensor1 = A0;
const int hallSensor2 = A1;
const int hallSensor3 = A2;
const int motor1Pin1 = 5;
const int motor1Pin2 = 6;
const int motor2Pin1 = 7;
const int motor2Pin2 = 8;
const int led1Pin = 3;
const int led2Pin = 2;
const int led3Pin = 12;

void setup() {
  pinMode(hallSensor1, INPUT);
  pinMode(hallSensor2, INPUT);
  pinMode(hallSensor3, INPUT);
  pinMode(motor1Pin1, OUTPUT);
  pinMode(motor1Pin2, OUTPUT);
  pinMode(motor2Pin1, OUTPUT);
  pinMode(motor2Pin2, OUTPUT);
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(led3Pin, OUTPUT);
}

void loop() {
  int sensor1Value = digitalRead(hallSensor1);
  int sensor2Value = digitalRead(hallSensor2);
  int sensor3Value = digitalRead(hallSensor3);

  digitalWrite(led1Pin, sensor1Value == HIGH ? HIGH : LOW);
  digitalWrite(led2Pin, sensor2Value == HIGH ? HIGH : LOW);
  digitalWrite(led3Pin, sensor3Value == HIGH ? HIGH : LOW);

  if (sensor1Value == HIGH) {
    digitalWrite(motor1Pin1, HIGH);
    digitalWrite(motor1Pin2, LOW);
  } else {
    digitalWrite(motor1Pin1, LOW);
    digitalWrite(motor1Pin2, LOW);
  }

  if (sensor2Value == HIGH) {
    digitalWrite(motor2Pin1, HIGH);
    digitalWrite(motor2Pin2, LOW);
  } else {
    digitalWrite(motor2Pin1, LOW);
    digitalWrite(motor2Pin2, LOW);
  }

  if (sensor3Value == HIGH) {
    digitalWrite(motor1Pin1, LOW);
    digitalWrite(motor1Pin2, HIGH);
  }
}

DC Motor Code

void setup() {
  // put your setup code here, to run once:
}

void loop() {
  // put your main code here, to run repeatedly:
}

This documentation provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and documented code.