Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO, an L293D motor driver shield, multiple motors with reducers, HC-SR04 ultrasonic sensors, and a power source consisting of two 18650 Li-ion batteries. The circuit is designed to control the motors and read distance measurements from the ultrasonic sensors.

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

L293D Motor Driver Shield

• Description: A motor driver shield capable of driving four DC motors or two stepper motors.
• Pins: 5v, GND, A0, A1, A2, A3, A4, A5, M+, M2, M1, M3, M4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, gnd, Aref, ser1, Servo2, +, -, 9v

Motor with Reducer

• Description: A DC motor with a gear reducer.
• Pins: 3 - 6 VCC, GND

HC-SR04 Ultrasonic Sensor

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

18650 Li-ion Battery x 2

• Description: A power source consisting of two 18650 Li-ion batteries.
• Pins: +, -

Wiring Details

Arduino UNO

• Connected to L293D Motor Driver Shield:
  • 5V to 5V
  • GND to GND

L293D Motor Driver Shield

• Connected to HC-SR04 Ultrasonic Sensor (Instance 1):

  • 5V to VCC
  • GND to GND
  • A0 to TRIG
  • A1 to ECHO

• Connected to HC-SR04 Ultrasonic Sensor (Instance 2):

  • 5V to VCC
  • GND to GND
  • A2 to TRIG
  • A3 to ECHO

• Connected to 18650 Li-ion Battery x 2:

  • M+ to +
  • GND to -

• Connected to Motor with Reducer (Instance 1):

  • M1 to 3 - 6 VCC
  • M1 to GND

• Connected to Motor with Reducer (Instance 2):

  • M2 to 3 - 6 VCC
  • M2 to GND

• Connected to Motor with Reducer (Instance 3):

  • M3 to 3 - 6 VCC
  • M3 to GND

• Connected to Motor with Reducer (Instance 4):

  • M4 to 3 - 6 VCC
  • M4 to GND

HC-SR04 Ultrasonic Sensor (Instance 1)

• Connected to L293D Motor Driver Shield:
  • VCC to 5V
  • GND to GND
  • TRIG to A0
  • ECHO to A1

HC-SR04 Ultrasonic Sensor (Instance 2)

• Connected to L293D Motor Driver Shield:
  • VCC to 5V
  • GND to GND
  • TRIG to A2
  • ECHO to A3

18650 Li-ion Battery x 2

• Connected to L293D Motor Driver Shield:
  • • to M+
  • • to GND

Motor with Reducer (Instance 1)

• Connected to L293D Motor Driver Shield:
  • 3 - 6 VCC to M1
  • GND to M1

Motor with Reducer (Instance 2)

• Connected to L293D Motor Driver Shield:
  • 3 - 6 VCC to M2
  • GND to M2

Motor with Reducer (Instance 3)

• Connected to L293D Motor Driver Shield:
  • 3 - 6 VCC to M3
  • GND to M3

Motor with Reducer (Instance 4)

• Connected to L293D Motor Driver Shield:
  • 3 - 6 VCC to M4
  • GND to M4

Documented Code

Arduino UNO Code

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

}

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

}

This code is a basic template for the Arduino UNO, with setup and loop functions defined but not yet implemented.