Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed using an ESP32 microcontroller, multiple DC gearmotors, ultrasonic sensors, a micro servo, a 12V battery, and an L298N motor driver. The circuit is intended for a robotic application, where the ESP32 controls the motors and sensors to navigate and interact with its environment.

Component List

1. ESP32 (30 pin)

   • Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3

2. Gearmotor DC Wheels Right

   • Description: A DC motor with wheels for robotic movement.
   • Pins: PIN1, PIN2

3. Gearmotor DC Wheels Left

   • Description: A DC motor with wheels for robotic movement.
   • Pins: PIN1, PIN2

4. HC-SR04 Ultrasonic Sensor

   • Description: A sensor used for distance measurement.
   • Pins: VCC, TRIG, ECHO, GND

5. Micro Servo 9G

   • Description: A small servo motor for precise control.
   • Pins: GND, +5V, PWM

6. Battery 12V

   • Description: A 12V power source for the circuit.
   • Pins: +, -

7. L298N DC Motor Driver

   • Description: A motor driver used to control the 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

Wiring Details

ESP32 (30 pin)

• GND connected to:

  • HC-SR04 Ultrasonic Sensor (GND)
  • Battery 12V (-)
  • L298N DC Motor Driver (GND)
  • Micro Servo 9G (GND)

• Vin connected to:

  • HC-SR04 Ultrasonic Sensor (VCC)
  • L298N DC Motor Driver (5V)
  • Micro Servo 9G (+5V)

• D23 connected to:

  • L298N DC Motor Driver (ENA)

• D27 connected to:

  • L298N DC Motor Driver (IN1)

• D26 connected to:

  • L298N DC Motor Driver (IN2)

• D18 connected to:

  • L298N DC Motor Driver (IN3)

• D19 connected to:

  • L298N DC Motor Driver (IN4)

• D22 connected to:

  • L298N DC Motor Driver (ENB)

• D32 connected to:

  • HC-SR04 Ultrasonic Sensor (TRIG)

• D33 connected to:

  • HC-SR04 Ultrasonic Sensor (ECHO)

• D25 connected to:

  • Micro Servo 9G (PWM)

Gearmotor DC Wheels Right

• PIN1 connected to:

  • L298N DC Motor Driver (OUT1)
  • Gearmotor DC Wheels Left (PIN2)

• PIN2 connected to:

  • L298N DC Motor Driver (OUT2)
  • Gearmotor DC Wheels Left (PIN1)

Gearmotor DC Wheels Left

• PIN1 connected to:

  • L298N DC Motor Driver (OUT2)
  • Gearmotor DC Wheels Right (PIN2)

• PIN2 connected to:

  • L298N DC Motor Driver (OUT1)
  • Gearmotor DC Wheels Right (PIN1)

HC-SR04 Ultrasonic Sensor

• GND connected to:

  • ESP32 (GND)

• VCC connected to:

  • ESP32 (Vin)

• TRIG connected to:

  • ESP32 (D32)

• ECHO connected to:

  • ESP32 (D33)

Micro Servo 9G

• GND connected to:

  • ESP32 (GND)

• +5V connected to:

  • ESP32 (Vin)

• PWM connected to:

  • ESP32 (D25)

Battery 12V

• + connected to:

  • L298N DC Motor Driver (12V)

• - connected to:

  • ESP32 (GND)

L298N DC Motor Driver

• OUT1 connected to:

  • Gearmotor DC Wheels Right (PIN1)
  • Gearmotor DC Wheels Left (PIN2)

• OUT2 connected to:

  • Gearmotor DC Wheels Right (PIN2)
  • Gearmotor DC Wheels Left (PIN1)

• 12V connected to:

  • Battery 12V (+)

• GND connected to:

  • ESP32 (GND)

• 5V connected to:

  • ESP32 (Vin)

• OUT3 connected to:

  • Gearmotor DC Wheels Right (PIN2)
  • Gearmotor DC Wheels Left (PIN1)

• OUT4 connected to:

  • Gearmotor DC Wheels Right (PIN1)
  • Gearmotor DC Wheels Left (PIN2)

• ENA connected to:

  • ESP32 (D23)

• IN1 connected to:

  • ESP32 (D27)

• IN2 connected to:

  • ESP32 (D26)

• IN3 connected to:

  • ESP32 (D18)

• IN4 connected to:

  • ESP32 (D19)

• ENB connected to:

  • ESP32 (D22)

Code

No code provided.