Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with various sensors, motors, and a WiFi module. The circuit is designed to control motors, read sensor data, and communicate wirelessly. Key components include IR sensors, a motor driver, a rocker switch, an ultrasonic sensor, a servo motor, and a WiFi module.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

IR Sensor

• Description: Infrared sensor for obstacle detection.
• Pins: out, gnd, vcc

Motor (Yellow Gear Motor)

• Description: Hobby motor with a gearbox.
• Pins: vcc, GND

L298N DC Motor Driver

• Description: Dual H-Bridge 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

Rocker Switch

• Description: A simple on/off switch.
• Pins: output, input

HC-SR04 Ultrasonic Sensor

• Description: Ultrasonic distance sensor.
• Pins: VCC, TRIG, ECHO, GND

18650 Li-ion Battery x 2

• Description: Rechargeable lithium-ion batteries.
• Pins: +, -

Micro Servo 9G

• Description: Small servo motor.
• Pins: GND, +5V, PWM

WiFi Module ESP8266-01

• Description: WiFi module for wireless communication.
• Pins: RX, GPIO0, GPIO2, GND, +3V3, Reset, CH-PD Chip power down, TX

Wiring Details

Arduino UNO

• GND: Connected to GND of L298N DC motor driver, both IR sensors, HC-SR04 Ultrasonic Sensor, Micro servo 9G, and 18650 Li-ion Battery.
• 3.3V: Connected to +3V3 and CH-PD Chip power down of WiFi module ESP8266-01.
• 5V: Connected to vcc of both IR sensors, VCC of HC-SR04 Ultrasonic Sensor, and +5V of Micro servo 9G.
• Vin: Connected to 12V of L298N DC motor driver and output of rocker switch.
• A0: Connected to out of the first IR sensor.
• A1: Connected to out of the second IR sensor.
• A2: Connected to ECHO of HC-SR04 Ultrasonic Sensor.
• A3: Connected to TRIG of HC-SR04 Ultrasonic Sensor.
• A5: Connected to PWM of Micro servo 9G.
• D10: Connected to ENA of L298N DC motor driver.
• D9: Connected to IN1 of L298N DC motor driver.
• D8: Connected to IN2 of L298N DC motor driver.
• D7: Connected to IN3 of L298N DC motor driver.
• D6: Connected to IN4 of L298N DC motor driver.
• D5: Connected to ENB of L298N DC motor driver.
• D1: Connected to RX of WiFi module ESP8266-01.
• D0: Connected to TX of WiFi module ESP8266-01.

IR Sensor (First)

• out: Connected to A0 of Arduino UNO.
• gnd: Connected to GND of Arduino UNO.
• vcc: Connected to 5V of Arduino UNO.

IR Sensor (Second)

• out: Connected to A1 of Arduino UNO.
• gnd: Connected to GND of Arduino UNO.
• vcc: Connected to 5V of Arduino UNO.

Motor (Yellow Gear Motor)

• vcc: Connected to OUT2 and OUT3 of L298N DC motor driver.
• GND: Connected to OUT1 and OUT4 of L298N DC motor driver.

L298N DC Motor Driver

• GND: Connected to GND of Arduino UNO.
• 12V: Connected to Vin of Arduino UNO and output of rocker switch.
• ENA: Connected to D10 of Arduino UNO.
• IN1: Connected to D9 of Arduino UNO.
• IN2: Connected to D8 of Arduino UNO.
• IN3: Connected to D7 of Arduino UNO.
• IN4: Connected to D6 of Arduino UNO.
• ENB: Connected to D5 of Arduino UNO.
• OUT1: Connected to GND of both motors.
• OUT2: Connected to vcc of both motors.
• OUT3: Connected to vcc of both motors.
• OUT4: Connected to GND of both motors.

Rocker Switch

• input: Connected to + of 18650 Li-ion Battery.
• output: Connected to 12V of L298N DC motor driver and Vin of Arduino UNO.

HC-SR04 Ultrasonic Sensor

• VCC: Connected to 5V of Arduino UNO.
• TRIG: Connected to A3 of Arduino UNO.
• ECHO: Connected to A2 of Arduino UNO.
• GND: Connected to GND of Arduino UNO.

18650 Li-ion Battery x 2

• +: Connected to input of rocker switch.
• -: Connected to GND of Arduino UNO.

Micro Servo 9G

• GND: Connected to GND of Arduino UNO.
• +5V: Connected to 5V of Arduino UNO.
• PWM: Connected to A5 of Arduino UNO.

WiFi Module ESP8266-01

• RX: Connected to D1 of Arduino UNO.
• TX: Connected to D0 of Arduino UNO.
• GND: Connected to GND of Arduino UNO.
• +3V3: Connected to 3.3V of Arduino UNO.
• CH-PD Chip power down: Connected to 3.3V of Arduino UNO.

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Documentation (documentation.txt)

This documentation provides a comprehensive overview of the circuit, including a detailed component list, wiring details, and the code used in the Arduino UNO microcontroller.