Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed to interface various components including an Arduino UNO, HX711 Weighing Sensor Module, L298N DC motor driver, motors with wheels, a VS1838B IR Receiver, a red LED, a resistor, a battery pack (2x 18650), and an Arduino Sensor Shield v5.0. The circuit is designed to receive IR signals, drive motors, and measure weight using a load cell. The Arduino UNO, equipped with a sensor shield, serves as the central processing unit, controlling the motor driver, reading sensor data, and managing power distribution.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• Digital I/O pins, analog input pins, power pins, and communication interfaces

HX711 Weighing Sensor Module

• Precision 24-bit analog-to-digital converter (ADC) for weight scales
• Designed to interface with a load cell

L298N DC Motor Driver

• Dual H-bridge motor driver capable of driving a pair of DC motors or a stepper motor
• Provides the ability to drive motors with forward, reverse, and stop controls

Motors and Wheels

• DC motors coupled with wheels for mobility
• Requires power and ground connections for operation

VS1838B IR Receiver

• Infrared receiver module for remote control applications
• Outputs a signal when it detects IR light at its operating frequency

LED: Two Pin (red)

• Standard red LED for indication purposes
• Requires a current-limiting resistor to prevent damage

Resistor

• Fixed resistor with a resistance of 220 Ohms
• Used to limit current to the LED

2x 18650 Battery Pack

• Power source consisting of two 18650 lithium-ion batteries
• Provides power to the circuit

Arduino Sensor Shield v5.0

• Expansion board for Arduino UNO
• Facilitates easy connections to various sensors and modules

Wiring Details

Arduino UNO

• Connected to the Arduino Sensor Shield v5.0

HX711 Weighing Sensor Module

• VCC connected to A0-VCC on the Arduino Sensor Shield v5.0
• CK/TX connected to A0-SIG on the Arduino Sensor Shield v5.0
• DO/RX connected to A1-SIG on the Arduino Sensor Shield v5.0
• GND connected to A0-GND on the Arduino Sensor Shield v5.0

L298N DC Motor Driver

• 12V connected to the VCC of the 2x 18650 battery pack and VCC on the Arduino Sensor Shield v5.0
• GND connected to the GND of the 2x 18650 battery pack and GND on the Arduino Sensor Shield v5.0
• IN1 to IN4 connected to 8-S, 9-S, 10-S, and 11-S respectively on the Arduino Sensor Shield v5.0
• ENA and ENB connected to 5-S and 6-S on the Arduino Sensor Shield v5.0
• OUT1 to OUT4 connected to the respective vcc and GND pins of the motors and wheels

Motors and Wheels

• Two sets of vcc and GND connected to OUT1/OUT2 and OUT3/OUT4 on the L298N DC motor driver

VS1838B IR Receiver

• OUT connected to 2-S on the Arduino Sensor Shield v5.0
• GND connected to 2-G on the Arduino Sensor Shield v5.0
• VCC connected to 2-V on the Arduino Sensor Shield v5.0

LED: Two Pin (red)

• cathode connected to 13-G on the Arduino Sensor Shield v5.0
• anode connected to one end of the resistor

Resistor

• One end connected to the anode of the LED
• The other end connected to 13-S on the Arduino Sensor Shield v5.0

Load Cell - Red/white/black/green

• A- and A+ connected to the corresponding A- and A+ on the HX711 Weighing Sensor Module
• E- and E+ connected to the corresponding E- and E+ on the HX711 Weighing Sensor Module

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:

}

Additional Notes

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