Circuit Documentation

Summary of the Circuit

This circuit is designed to control a DC motor using an Arduino UNO microcontroller and an L298N DC motor driver. The speed of the motor is adjustable via a rotary potentiometer. A pushbutton is included to provide input to the Arduino, and a resistor is used for pull-down on the pushbutton. The motor driver is powered by a battery case. The circuit's functionality is controlled by embedded code running on the Arduino UNO.

Component List

L298N DC Motor Driver

• Description: A motor driver module capable of driving two DC motors.
• Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

DC Motor

• Description: A standard DC motor.
• Pins: pin 1, pin 2

My Battery Case

• Description: A battery case to provide power to the circuit.
• Pins: +, -

Rotary Potentiometer

• Description: A variable resistor with a knob used to provide analog input.
• Pins: leg1, wiper, leg2
• Properties: Resistance: 10,000 Ohms

Arduino UNO

• Description: A 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

Pushbutton

• Description: A simple pushbutton switch.
• Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

Resistor

• Description: A passive two-terminal electrical component that implements electrical resistance.
• Pins: pin1, pin2
• Properties: Resistance: 200 Ohms

Wiring Details

L298N DC Motor Driver

• ENA connected to Arduino UNO D10
• IN1 connected to Arduino UNO D9
• IN2 connected to Arduino UNO D8
• OUT1 connected to DC Motor pin 2
• OUT2 connected to DC Motor pin 1
• 12V connected to My Battery Case +
• GND connected to My Battery Case -

DC Motor

• pin 1 connected to L298N DC Motor Driver OUT2
• pin 2 connected to L298N DC Motor Driver OUT1

My Battery Case

• • connected to L298N DC Motor Driver 12V
• • connected to L298N DC Motor Driver GND

Rotary Potentiometer

• leg1 connected to Arduino UNO 5V
• wiper connected to Arduino UNO A5
• leg2 connected to Pushbutton Pin 4 (out)

Arduino UNO

• D3 connected to Resistor pin2
• GND connected to Pushbutton Pin 4 (out)
• 5V connected to Rotary Potentiometer leg1
• A5 connected to Rotary Potentiometer wiper
• D10 connected to L298N DC Motor Driver ENA
• D9 connected to L298N DC Motor Driver IN1
• D8 connected to L298N DC Motor Driver IN2

Pushbutton

• Pin 2 (in) connected to Resistor pin2
• Pin 4 (out) connected to Rotary Potentiometer leg2

Resistor

• pin1 connected to Rotary Potentiometer leg1
• pin2 connected to Pushbutton Pin 2 (in) and Arduino UNO D3

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Additional Notes (documentation.txt)

No additional code documentation was provided.