Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes a Raspberry Pi 4B, multiple DC motors, an L298N DC motor driver, an HC-SR04 Ultrasonic Sensor, an OV2640 Camera Module, a Servo, and a Lipo Battery. The circuit is designed to control the motors and sensors using the Raspberry Pi, which acts as the central processing unit.

Component List

1. Raspberry Pi 4B

   • Description: A powerful single-board computer used for various applications.
   • Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN

2. DC Motor

   • Description: A motor that runs on direct current (DC) electricity.
   • Pins: pin 1, pin 2

3. 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

4. HC-SR04 Ultrasonic Sensor

   • Description: A sensor used to measure distance using ultrasonic waves.
   • Pins: VCC, TRIG, ECHO, GND

5. OV2640 Camera Module

   • Description: A camera module used for capturing images and videos.
   • Pins: 3.3V, GND, SIOC, SIOD, VSync, HRef, PCLK, XCLK, D9, D8, D7, D6, D5, D4, D3, D2, RET, PWDN

6. Servo

   • Description: A motor that allows precise control of angular position.
   • Pins: GND, VCC, PWM

7. Lipo Battery

   • Description: A rechargeable lithium polymer battery.
   • Pins: VCC, GND

Wiring Details

Raspberry Pi 4B

• 3V3 connected to 3.3V of OV2640 Camera Module
• 5V connected to:
  • ENA of L298N DC Motor Driver
  • ENB of L298N DC Motor Driver
  • VCC of HC-SR04 Ultrasonic Sensor
  • VCC of Servo
• GPIO2 connected to ECHO of HC-SR04 Ultrasonic Sensor
• GPIO3 connected to TRIG of HC-SR04 Ultrasonic Sensor
• GPIO14 connected to IN3 of L298N DC Motor Driver
• GND connected to:
  • GND of OV2640 Camera Module
  • GND of HC-SR04 Ultrasonic Sensor
  • GND of Servo
• GPIO17 connected to IN1 of L298N DC Motor Driver
• GPIO27 connected to IN1 of L298N DC Motor Driver
• GPIO22 connected to PWM of Servo
• GPIO23 connected to IN2 of L298N DC Motor Driver
• GPIO24 connected to IN4 of L298N DC Motor Driver
• GPIO10 connected to VSync of OV2640 Camera Module
• GPIO9 connected to SIOD of OV2640 Camera Module
• GPIO11 connected to PCLK of OV2640 Camera Module
• GPIO5 connected to D6 of OV2640 Camera Module
• GPIO13 connected to IN4 of L298N DC Motor Driver
• GPIO19 connected to IN3 of L298N DC Motor Driver
• GPIO16 connected to IN2 of L298N DC Motor Driver
• ID_SC connected to D9 of OV2640 Camera Module

DC Motor

• pin 1 connected to OUT1 of L298N DC Motor Driver
• pin 2 connected to OUT2 of L298N DC Motor Driver

L298N DC Motor Driver

• OUT1 connected to pin 1 of DC Motor
• OUT2 connected to pin 2 of DC Motor
• OUT3 connected to pin 1 of another DC Motor
• OUT4 connected to pin 2 of another DC Motor
• 12V connected to VCC of Lipo Battery
• GND connected to GND of Lipo Battery

HC-SR04 Ultrasonic Sensor

• VCC connected to 5V of Raspberry Pi 4B
• TRIG connected to GPIO3 of Raspberry Pi 4B
• ECHO connected to GPIO2 of Raspberry Pi 4B
• GND connected to GND of Raspberry Pi 4B

OV2640 Camera Module

• 3.3V connected to 3V3 of Raspberry Pi 4B
• GND connected to GND of Raspberry Pi 4B
• VSync connected to GPIO10 of Raspberry Pi 4B
• SIOD connected to GPIO9 of Raspberry Pi 4B
• PCLK connected to GPIO11 of Raspberry Pi 4B
• D6 connected to GPIO5 of Raspberry Pi 4B
• D9 connected to ID_SC of Raspberry Pi 4B

Servo

• GND connected to GND of Raspberry Pi 4B
• VCC connected to 5V of Raspberry Pi 4B
• PWM connected to GPIO22 of Raspberry Pi 4B

Lipo Battery

• VCC connected to 12V of L298N DC Motor Driver
• GND connected to GND of L298N DC Motor Driver

Code

No code is 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 section. Each component is described, and the wiring details are provided to ensure proper connections.