Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, various sensors, motors, a motor driver, a WiFi module, and a power supply. The circuit is designed to interface with multiple sensors and actuators, enabling a range of functionalities.

Component List

1. 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

2. IR Sensor

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

3. Motor (Yellow Gear Motor)

   • Description: Hobby motor with gear reduction.
   • Pins: vcc, GND

4. 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

5. Rocker Switch

   • Description: On/Off switch.
   • Pins: output, input

6. HC-SR04 Ultrasonic Sensor

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

7. 18650 Li-ion Battery x 2

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

8. Micro Servo 9G

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

9. 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

• 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
• GND connected to gnd of both IR Sensors, GND of HC-SR04 Ultrasonic Sensor, GND of Micro Servo 9G, GND of WiFi Module ESP8266-01, and GND of L298N DC Motor Driver
• Vin connected to output of Rocker Switch
• A0 connected to out of IR Sensor
• A1 connected to out of 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

• gnd connected to - of 18650 Li-ion Battery x 2
• vcc connected to 5V of Arduino UNO
• out connected to A0 of Arduino UNO

IR Sensor

• gnd connected to - of 18650 Li-ion Battery x 2
• vcc connected to 5V of Arduino UNO
• out connected to A1 of Arduino UNO

Motor (Yellow Gear Motor)

• vcc connected to OUT2 of L298N DC Motor Driver
• GND connected to OUT1 of L298N DC Motor Driver

Motor (Yellow Gear Motor)

• vcc connected to OUT3 of L298N DC Motor Driver
• GND connected to OUT4 of L298N DC Motor Driver

L298N DC Motor Driver

• 12V connected to output of Rocker Switch
• GND connected to - of 18650 Li-ion Battery x 2
• OUT1 connected to GND of Motor (Yellow Gear Motor)
• OUT2 connected to vcc of Motor (Yellow Gear Motor)
• OUT3 connected to vcc of Motor (Yellow Gear Motor)
• OUT4 connected to GND of Motor (Yellow Gear Motor)
• 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

Rocker Switch

• input connected to + of 18650 Li-ion Battery x 2
• output connected to Vin of Arduino UNO and 12V of L298N DC Motor Driver

HC-SR04 Ultrasonic Sensor

• GND connected to - of 18650 Li-ion Battery x 2
• VCC connected to 5V of Arduino UNO
• TRIG connected to A3 of Arduino UNO
• ECHO connected to A2 of Arduino UNO

18650 Li-ion Battery x 2

• + connected to input of Rocker Switch
• - connected to gnd of both IR Sensors, GND of HC-SR04 Ultrasonic Sensor, GND of Micro Servo 9G, GND of L298N DC Motor Driver, and GND of Arduino UNO

Micro Servo 9G

• GND connected to - of 18650 Li-ion Battery x 2
• +5V connected to 5V of Arduino UNO
• PWM connected to A5 of Arduino UNO

WiFi Module ESP8266-01

• 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
• RX connected to D1 of Arduino UNO
• TX connected to D0 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 document provides a comprehensive overview of the circuit, including a detailed component list, wiring details, and the code used in the Arduino UNO microcontroller.