Circuit Documentation

Summary

This circuit is designed around the Arduino Mega 2560 microcontroller and includes a variety of sensors and modules to perform various functions. The circuit features ultrasonic sensors (HC-SR04) for distance measurement, a Bluetooth module (HC-06) for wireless communication, an accelerometer (AITrip ADXL335 GY-61) for motion detection, an IR obstacle sensor (Sensor FC-51 IR), and a motor driver (L298N) to control DC motors. The circuit is powered by a 9V battery and is capable of driving two DC Mini Metal Gear Motors. The Arduino Mega 2560 is the central processing unit that reads sensor data, controls the motors, and communicates with external devices via Bluetooth.

Component List

Arduino Mega 2560

• Microcontroller board based on the ATmega2560
• Provides a large number of IO pins, including digital, analog, and PWM capable pins
• Used as the main controller for the circuit

Battery 9V

• Provides power to the circuit
• Used to supply the motor driver and indirectly powers other components through the Arduino Mega 2560

HC-SR04 Ultrasonic Sensor

• Ultrasonic distance measuring module
• Uses sonar to determine the distance to an object
• Multiple instances are used for multi-directional distance sensing

L298N DC Motor Driver

• Dual H-bridge motor driver
• Capable of driving two DC motors with direction and speed control

DC Mini Metal Gear Motor

• Small DC motor with a gearbox for increased torque
• Two instances are used for driving a vehicle or robotic platform

HC-06 Bluetooth Module

• Wireless serial communication module
• Allows for Bluetooth connectivity with other devices

Sensor FC-51 IR

• Infrared obstacle avoidance sensor
• Detects the presence of an object within a certain range

AITrip ADXL335 GY-61

• Analog 3-axis accelerometer
• Measures acceleration in three dimensions

Wiring Details

Arduino Mega 2560

• 3V3 connected to HC-06 VCC
• 5V connected to AITrip ADXL335 GY-61 VCC, L298N 5V, Sensor FC-51 IR VCC, and all HC-SR04 VCC pins
• GND connected to HC-06 GND, AITrip ADXL335 GY-61 GND, Sensor FC-51 IR GND, and all HC-SR04 GND pins
• A0 connected to AITrip ADXL335 GY-61 X-Out
• A1 connected to AITrip ADXL335 GY-61 Y-Out
• A2 connected to AITrip ADXL335 GY-61 Z-Out
• D15/RX3 connected to HC-06 TXD
• D14/TX3 connected to HC-06 RXD
• D9 PWM connected to L298N ENA
• D10 PWM connected to L298N ENB
• D52 connected to L298N IN2
• D50 connected to L298N IN4
• D32 connected to HC-SR04 TRIG (Instance 1)
• D30 connected to HC-SR04 TRIG (Instance 2)
• D28 connected to HC-SR04 TRIG (Instance 3)
• D22 connected to Sensor FC-51 IR OUT
• D53 connected to L298N IN1
• D51 connected to L298N IN3
• D33 connected to HC-SR04 ECHO (Instance 1)
• D31 connected to HC-SR04 ECHO (Instance 2)
• D29 connected to HC-SR04 ECHO (Instance 3)

Battery 9V

• VCC connected to L298N 12V
• GND connected to L298N GND

L298N DC Motor Driver

• OUT1 connected to DC Mini Metal Gear Motor IN2 (Instance 1)
• OUT2 connected to DC Mini Metal Gear Motor IN1 (Instance 1)
• OUT3 connected to DC Mini Metal Gear Motor IN2 (Instance 2)
• OUT4 connected to DC Mini Metal Gear Motor IN1 (Instance 2)

Documented Code

Arduino Mega 2560 Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Notes

• The provided code is a template and does not contain any functional code specific to the circuit's operation.
• The user is expected to write the setup and loop functions to initialize the components and define the circuit's behavior during operation.