Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, an L298N DC motor driver, multiple DC motors, a 12V 7Ah battery, a rocker switch, 775 motors, a 12V single-channel relay, a Tower Pro SG90 servo, and an HC-SR04 ultrasonic sensor. The circuit is designed to control various motors and sensors using the Arduino UNO.

Component List

1. 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

2. L298N DC Motor Driver

   • Description: A dual H-Bridge motor driver module.
   • 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

3. DC Motor

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

4. 12V 7Ah Battery

   • Description: A rechargeable 12V battery.
   • Pins: 12v +, 12v -

5. Rocker Switch

   • Description: A simple on/off switch.
   • Pins: 1, 2

6. 775 Motor

   • Description: A high-torque DC motor.
   • Pins: positive, negative

7. 12V Single Channel Relay

   • Description: A relay module for switching high-power devices.
   • Pins: NC, COM, NO, IN, GND, VCC

8. Tower Pro SG90 Servo

   • Description: A micro servo motor.
   • Pins: Signal, +5V, GND

9. HC-SR04 Ultrasonic Sensor

   • Description: An ultrasonic distance sensor.
   • Pins: VCC, TRIG, ECHO, GND

Wiring Details

Arduino UNO

• 5V connected to VCC of HC-SR04 Ultrasonic Sensor
• GND connected to GND of Tower Pro SG90 servo, GND of HC-SR04 Ultrasonic Sensor, GND of L298N DC motor driver, GND of 12V SINGLE CHANNEL RELAY, and 12v - of 12V 7Ah Battery
• Vin connected to +5V of Tower Pro SG90 servo, 5V of L298N DC motor driver, and VCC of 12V SINGLE CHANNEL RELAY
• D11 connected to ENA of L298N DC motor driver
• D10 connected to ECHO of HC-SR04 Ultrasonic Sensor
• D9 connected to TRIG of HC-SR04 Ultrasonic Sensor
• D8 connected to ENB of L298N DC motor driver
• D7 connected to IN of 12V SINGLE CHANNEL RELAY
• D6 connected to Signal of Tower Pro SG90 servo
• D5 connected to IN4 of L298N DC motor driver
• D4 connected to IN3 of L298N DC motor driver
• D3 connected to IN2 of L298N DC motor driver
• D2 connected to IN1 of L298N DC motor driver

L298N DC Motor Driver

• GND connected to GND of Arduino UNO, GND of 12V SINGLE CHANNEL RELAY, and 12v - of 12V 7Ah Battery
• 5V connected to Vin of Arduino UNO, +5V of Tower Pro SG90 servo, and VCC of 12V SINGLE CHANNEL RELAY
• 12V connected to 2 of Rocker Switch
• OUT1 connected to pin 2 of DC Motor, positive of 775 motor, and pin 2 of another DC Motor
• OUT2 connected to pin 1 of DC Motor, negative of 775 motor, and pin 1 of another DC Motor
• OUT3 connected to pin 1 of another DC Motor, negative of another 775 motor, and pin 1 of another DC Motor
• OUT4 connected to pin 2 of another DC Motor, positive of another 775 motor, and pin 2 of another DC Motor

12V 7Ah Battery

• 12v - connected to GND of Arduino UNO, GND of L298N DC motor driver, and GND of 12V SINGLE CHANNEL RELAY
• 12v + connected to 1 of Rocker Switch

Rocker Switch

• 1 connected to 12v + of 12V 7Ah Battery
• 2 connected to 12V of L298N DC motor driver

775 Motor

• positive connected to pin 2 of DC Motor and OUT1 of L298N DC motor driver
• negative connected to pin 1 of DC Motor and OUT2 of L298N DC motor driver

12V Single Channel Relay

• GND connected to GND of Arduino UNO, GND of L298N DC motor driver, and 12v - of 12V 7Ah Battery
• VCC connected to Vin of Arduino UNO, +5V of Tower Pro SG90 servo, and 5V of L298N DC motor driver
• IN connected to D7 of Arduino UNO

Tower Pro SG90 Servo

• GND connected to GND of Arduino UNO
• +5V connected to Vin of Arduino UNO, 5V of L298N DC motor driver, and VCC of 12V SINGLE CHANNEL RELAY
• Signal connected to D6 of Arduino UNO

HC-SR04 Ultrasonic Sensor

• VCC connected to 5V of Arduino UNO
• GND connected to GND of Arduino UNO
• TRIG connected to D9 of Arduino UNO
• ECHO connected to D10 of Arduino UNO

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:

}

Documentation (documentation.txt)

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