Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes a Vietduino Uno USB-B microcontroller, an L298N DC motor driver, two DC motors, an HC-05 Bluetooth module, an ESP32 CAM, and a battery. The circuit is designed to control the DC motors via the motor driver, with additional functionalities provided by the Bluetooth module and the ESP32 CAM.

Component List

1. Vietduino Uno USB-B

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: AREF, GND, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 3V3, 5V, RESET, VIN, A0, A1, A2, A3, A4, A5

2. L298N DC Motor Driver

   • Description: A dual H-Bridge motor driver that allows control of 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

3. DC Motor (x2)

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

4. HC-05 Bluetooth Module

   • Description: A Bluetooth module used for wireless communication.
   • Pins: Key, VCC, GND, TXD, RXD, State

5. ESP32 CAM

   • Description: A camera module based on the ESP32 chip.
   • Pins: 5V, GND, GPIO12, GPIO13, GPIO15, GPIO14, GPIO2, GPIO4, 3.3V, GPIO16, GPIO0, 3.3V / 5V / P_OUT, GPIO3 / RX, GPIO1 / TX

6. Battery

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

Wiring Details

Vietduino Uno USB-B

• VIN is connected to 5V of the L298N DC motor driver, VCC of the HC-05 Bluetooth module, and 5V of the ESP32 CAM.
• GND is connected to GND of the L298N DC motor driver, GND of the ESP32 CAM, and GND of the HC-05 Bluetooth module.
• Pin 7 is connected to IN2 of the L298N DC motor driver.
• Pin 6 is connected to IN1 of the L298N DC motor driver.
• Pin 5 is connected to IN3 of the L298N DC motor driver.
• Pin 4 is connected to IN4 of the L298N DC motor driver.
• Pin 3 is connected to RXD of the HC-05 Bluetooth module.
• Pin 2 is connected to TXD of the HC-05 Bluetooth module.
• Pin 1 is connected to GPIO1 / TX of the ESP32 CAM.
• Pin 0 is connected to GPIO3 / RX of the ESP32 CAM.

L298N DC Motor Driver

• 5V is connected to VIN of the Vietduino Uno USB-B, VCC of the HC-05 Bluetooth module, and 5V of the ESP32 CAM.
• GND is connected to GND of the Vietduino Uno USB-B, GND of the ESP32 CAM, and GND of the battery.
• IN2 is connected to Pin 7 of the Vietduino Uno USB-B.
• IN1 is connected to Pin 6 of the Vietduino Uno USB-B.
• IN3 is connected to Pin 5 of the Vietduino Uno USB-B.
• IN4 is connected to Pin 4 of the Vietduino Uno USB-B.
• OUT1 is connected to pin 2 of the first DC motor.
• OUT2 is connected to pin 1 of the first DC motor.
• OUT3 is connected to pin 2 of the second DC motor.
• OUT4 is connected to pin 1 of the second DC motor.
• 12V is connected to + of the battery.

DC Motor (1)

• pin 2 is connected to OUT1 of the L298N DC motor driver.
• pin 1 is connected to OUT2 of the L298N DC motor driver.

DC Motor (2)

• pin 2 is connected to OUT3 of the L298N DC motor driver.
• pin 1 is connected to OUT4 of the L298N DC motor driver.

HC-05 Bluetooth Module

• VCC is connected to 5V of the L298N DC motor driver.
• GND is connected to GND of the Vietduino Uno USB-B.
• RXD is connected to Pin 3 of the Vietduino Uno USB-B.
• TXD is connected to Pin 2 of the Vietduino Uno USB-B.

ESP32 CAM

• 5V is connected to 5V of the L298N DC motor driver.
• GND is connected to GND of the Vietduino Uno USB-B.
• GPIO1 / TX is connected to Pin 1 of the Vietduino Uno USB-B.
• GPIO3 / RX is connected to Pin 0 of the Vietduino Uno USB-B.

Battery

• - is connected to GND of the L298N DC motor driver.
• + is connected to 12V of the L298N DC motor driver.

Code

No code is provided for this circuit.