Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed to control a set of gearmotors using an L298N DC motor driver, an ESP32 microcontroller, and various other components including a GPS module, a metal detector, and a rocker switch. The circuit is powered by a 12V battery and includes connections for both power and signal lines.

Component List

1. Gearmotor DC Wheels Right

   • Pins: PIN1, PIN2
   • Description: DC motor for the right wheels of the vehicle.

2. Gearmotor DC Wheels Left

   • Pins: PIN1, PIN2
   • Description: DC motor for the left wheels of the vehicle.

3. L298N DC Motor Driver

   • 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
   • Description: Motor driver to control the gearmotors.

4. GPS NEO 6M

   • Pins: VCC, RX, TX, GND
   • Description: GPS module for location tracking.

5. Battery 12V

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

6. Rocker Switch

   • Pins: 1, 2
   • Description: Switch to control the power supply.

7. Metal Detector

   • Pins: VCC, GND, D
   • Description: Metal detection sensor.

8. ESP32 CAM

   • Pins: 5V, GND, GPIO12, GPIO13, GPIO15, GPIO14, GPIO2, GPIO4, 3.3V, GPIO16, GPIO0, 3.3V / 5V / P_OUT, GPIO3 / RX, GPIO1 / TX
   • Description: Camera module with ESP32 microcontroller.

9. ESP32 (30 pin)

   • 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
   • Description: Main microcontroller for the circuit.

Wiring Details

Gearmotor DC Wheels Right

• PIN1 connected to L298N DC Motor Driver OUT3
• PIN2 connected to L298N DC Motor Driver OUT4

Gearmotor DC Wheels Left

• PIN1 connected to L298N DC Motor Driver OUT4
• PIN2 connected to L298N DC Motor Driver OUT3

L298N DC Motor Driver

• ENB connected to ESP32 (30 pin) D33
• IN4 connected to ESP32 (30 pin) D25
• IN3 connected to ESP32 (30 pin) D26
• IN2 connected to ESP32 (30 pin) D27
• IN1 connected to ESP32 (30 pin) D14
• ENA connected to ESP32 (30 pin) D12
• GND connected to Battery 12V -, ESP32 (30 pin) GND, ESP32 CAM GND
• 5V connected to ESP32 (30 pin) Vin, ESP32 CAM 5V
• 12V connected to Rocker Switch 2
• OUT3 connected to Gearmotor DC Wheels Right PIN1, Gearmotor DC Wheels Left PIN2
• OUT4 connected to Gearmotor DC Wheels Right PIN2, Gearmotor DC Wheels Left PIN1
• OUT2 connected to Gearmotor DC Wheels Left PIN2, Gearmotor DC Wheels Right PIN1
• OUT1 connected to Gearmotor DC Wheels Left PIN1, Gearmotor DC Wheels Right PIN2

GPS NEO 6M

• RX connected to ESP32 (30 pin) TX2
• TX connected to ESP32 (30 pin) RX2
• GND connected to ESP32 (30 pin) GND, Metal Detector GND
• VCC connected to ESP32 (30 pin) 3V3

Battery 12V

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

Rocker Switch

• 1 connected to Battery 12V +
• 2 connected to L298N DC Motor Driver 12V

Metal Detector

• D connected to ESP32 (30 pin) D13
• GND connected to ESP32 (30 pin) GND, GPS NEO 6M GND
• VCC connected to ESP32 (30 pin) 3V3

ESP32 CAM

• GND connected to L298N DC Motor Driver GND
• 5V connected to L298N DC Motor Driver 5V

ESP32 (30 pin)

• D33 connected to L298N DC Motor Driver ENB
• D25 connected to L298N DC Motor Driver IN4
• D26 connected to L298N DC Motor Driver IN3
• D27 connected to L298N DC Motor Driver IN2
• D14 connected to L298N DC Motor Driver IN1
• D12 connected to L298N DC Motor Driver ENA
• D13 connected to Metal Detector D
• GND connected to Battery 12V -, L298N DC Motor Driver GND, ESP32 CAM GND
• Vin connected to L298N DC Motor Driver 5V
• TX2 connected to GPS NEO 6M RX
• RX2 connected to GPS NEO 6M TX
• 3V3 connected to Metal Detector VCC, GPS NEO 6M VCC

Code

No code provided for this circuit.

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This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. Each section is designed to offer clear and concise information to facilitate understanding and replication of the circuit.