Circuit Documentation

Summary

This circuit is designed to control four DC motors using two L298N DC motor drivers, which are interfaced with an ESP32 microcontroller. The motors can be independently controlled through the ESP32's GPIO pins, allowing for various operations such as changing the direction and speed of the motors. A 12V battery provides the power source for the motors and the motor drivers, while the ESP32 is powered by a 5V connection from the motor drivers. A rocker switch is used to control the power supply from the battery to the motor drivers.

Component List

ESP32 - 38 pins

• Microcontroller with WiFi and Bluetooth capabilities.
• It has a wide variety of GPIO pins for interfacing with other components.

L298N DC Motor Driver

• A motor driver module capable of driving up to two DC motors.
• It has pins for motor outputs, power supply, and control inputs from the microcontroller.

Rocker Switch

• A simple on/off switch that controls the connection between the battery and the motor drivers.

Battery 12V

• A 12V power source used to power the motor drivers and, indirectly, the DC motors.

DC Motor

• A standard DC motor with two connection pins for power and ground.

Comments

• Placeholder components that may represent annotations or notes within the circuit design.

Wiring Details

ESP32 - 38 pins

• G26 connected to L298N Driver (Motor Driver 1) IN4
• G27 connected to L298N Driver (Motor Driver 1) IN3
• G14 connected to L298N Driver (Motor Driver 1) IN2
• G12 connected to L298N Driver (Motor Driver 1) IN1
• 5V connected to both L298N Drivers 5V
• GND connected to both L298N Drivers GND and Battery -
• G19 connected to L298N Driver (Motor Driver 2) IN4
• G18 connected to L298N Driver (Motor Driver 2) IN3
• G17 connected to L298N Driver (Motor Driver 2) IN2
• G16 connected to L298N Driver (Motor Driver 2) IN1

L298N DC Motor Driver (Motor Driver 1)

• OUT1 and OUT2 connected to DC Motor 1
• OUT3 and OUT4 connected to DC Motor 2
• 12V connected to Rocker Switch output
• GND connected to ESP32 GND and Battery -

L298N DC Motor Driver (Motor Driver 2)

• OUT1 and OUT2 connected to DC Motor 3
• OUT3 and OUT4 connected to DC Motor 4
• 12V connected to Rocker Switch output
• GND connected to ESP32 GND and Battery -

Rocker Switch

• input connected to Battery +
• output connected to both L298N Drivers 12V

Battery 12V

• + connected to Rocker Switch input
• - connected to ESP32 GND and both L298N Drivers GND

DC Motors

• DC Motor 1 connected to L298N Driver (Motor Driver 1) OUT1 and OUT2
• DC Motor 2 connected to L298N Driver (Motor Driver 1) OUT3 and OUT4
• DC Motor 3 connected to L298N Driver (Motor Driver 2) OUT1 and OUT2
• DC Motor 4 connected to L298N Driver (Motor Driver 2) OUT3 and OUT4

Documented Code

No code has been provided for the ESP32 microcontroller. The code would typically include the initialization of the GPIO pins as outputs and the logic to control the direction and speed of the DC motors by sending signals to the L298N motor driver's input pins.