Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 CAM microcontroller, an L298N DC motor driver, a 12V battery, a rocker switch, a buck converter, multiple micro servos, and hobby gearmotors. The circuit is designed to control various motors and servos using the ESP32 CAM, with power regulation provided by a buck converter and a rocker switch for power control.

Component List

1. ESP32 CAM

   • Description: A microcontroller with integrated Wi-Fi and Bluetooth, used for controlling the circuit.
   • Pins: 5V, GND, GPIO12, GPIO13, GPIO15, GPIO14, GPIO2, GPIO4, 3.3V, GPIO16, GPIO0, 3.3V / 5V / P_OUT, GPIO3 / RX, GPIO1 / TX

2. L298N DC Motor Driver

   • Description: A dual H-bridge motor driver that allows control of the speed and direction 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. Battery 12V

   • Description: A 12V battery used to power the circuit.
   • Pins: +, -

4. Rocker Switch (SPST)

   • Description: A single-pole single-throw switch used to control the power supply to the circuit.
   • Pins: 1, 2

5. Buck Converter

   • Description: A DC-DC converter used to step down the voltage from 12V to 5V.
   • Pins: IN+, IN-, OUT+, OUT-

6. Micro Servo 9G

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

7. Hobby Gearmotor with 48:1 Gearbox

   • Description: A DC motor with a 48:1 gearbox for increased torque.
   • Pins: pin 1, pin 2

Wiring Details

ESP32 CAM

• 5V connected to OUT+ of the Buck Converter
• GND connected to OUT- of the Buck Converter
• GPIO12 connected to IN1 of the L298N DC Motor Driver
• GPIO13 connected to IN2 of the L298N DC Motor Driver
• GPIO15 connected to PWM of the Micro Servo 9G
• GPIO14 connected to PWM of the Micro Servo 9G
• GPIO2 connected to ENA and ENB of the L298N DC Motor Driver
• GPIO16 connected to PWM of the Micro Servo 9G
• GPIO3 / RX connected to IN4 of the L298N DC Motor Driver
• GPIO1 / TX connected to IN3 of the L298N DC Motor Driver

L298N DC Motor Driver

• IN1 connected to GPIO12 of the ESP32 CAM
• IN2 connected to GPIO13 of the ESP32 CAM
• IN3 connected to GPIO1 / TX of the ESP32 CAM
• IN4 connected to GPIO3 / RX of the ESP32 CAM
• ENA and ENB connected to GPIO2 of the ESP32 CAM
• OUT1 connected to pin 2 of two Hobby Gearmotors
• OUT2 connected to pin 1 of two Hobby Gearmotors
• OUT3 connected to pin 1 of two Hobby Gearmotors
• OUT4 connected to pin 2 of two Hobby Gearmotors
• 12V connected to IN+ of the Buck Converter and pin 2 of the Rocker Switch
• GND connected to GND of three Micro Servos and - of the Battery
• 5V connected to +5V of three Micro Servos

Battery 12V

• + connected to pin 1 of the Rocker Switch
• - connected to GND of the L298N DC Motor Driver

Rocker Switch (SPST)

• 1 connected to + of the Battery
• 2 connected to 12V of the L298N DC Motor Driver and IN+ of the Buck Converter

Buck Converter

• IN+ connected to pin 2 of the Rocker Switch and 12V of the L298N DC Motor Driver
• IN- connected to GND of the L298N DC Motor Driver and - of the Battery
• OUT+ connected to 5V of the ESP32 CAM
• OUT- connected to GND of the ESP32 CAM

Micro Servo 9G

• GND of three Micro Servos connected to GND of the L298N DC Motor Driver
• +5V of three Micro Servos connected to 5V of the L298N DC Motor Driver
• PWM of one Micro Servo connected to GPIO15 of the ESP32 CAM
• PWM of another Micro Servo connected to GPIO14 of the ESP32 CAM
• PWM of another Micro Servo connected to GPIO16 of the ESP32 CAM

Hobby Gearmotor with 48:1 Gearbox

• pin 1 of two Hobby Gearmotors connected to OUT2 of the L298N DC Motor Driver
• pin 2 of two Hobby Gearmotors connected to OUT1 of the L298N DC Motor Driver
• pin 1 of two Hobby Gearmotors connected to OUT3 of the L298N DC Motor Driver
• pin 2 of two Hobby Gearmotors connected to OUT4 of the L298N DC Motor Driver

Code

No code is provided for this circuit.