Circuit Documentation

Summary

This circuit incorporates a variety of components including LEDs, a Bluetooth module, DC motors, motor drivers, batteries, an Arduino UNO microcontroller, and a toggle switch. The circuit is designed to control DC motors via the L298N motor drivers, which are interfaced with the Arduino UNO. The HC-05 Bluetooth module allows for wireless communication, potentially for remote control purposes. Power is supplied by Polymer Lithium Ion batteries and a Lipo battery, with a toggle switch included for power control. The LEDs serve as indicators, and their operation is linked to the 3.3V output from the Arduino UNO.

Component List

• Toggle Switch: A switch to control the power flow to the circuit.
• HC-05 Bluetooth Module: A wireless communication module for Bluetooth connectivity.
• LED (blue): Two blue LEDs used as indicators.
• DC Motor: Three motors that are the actuators in the circuit.
• Polymer Lithium Ion Battery - Generic: Two batteries to provide power to the circuit.
• Lipo Battery: An additional power source for the circuit.
• Arduino UNO: The microcontroller used for controlling the logic of the circuit.
• L298N DC Motor Driver: Two motor driver modules to control the speed and direction of the DC motors.

Wiring Details

Toggle Switch

• L1: Connected to the Vin pin of the Arduino UNO.
• COM: Connected to the VCC of the Lipo Battery.

HC-05 Bluetooth Module

• Key: Not connected.
• VCC: Connected to the 5V output from the Arduino UNO.
• TXD: Connected to the D0 pin of the Arduino UNO.
• RXD: Connected to the D1 pin of the Arduino UNO.
• State: Not connected.
• GND: Connected to the GND pin of the Arduino UNO.

LED: Two Pin (blue)

• Cathode: Connected to the 3.3V pin of the Arduino UNO.
• Anode: Connected to the GND through the L298N DC motor driver.

DC Motor

• Pin 1 & Pin 2: Each motor is connected to an OUT1/OUT2 or OUT3/OUT4 pair on the L298N DC motor drivers.

Polymer Lithium Ion Battery - Generic

• GND: Connected to the GND of the circuit.
• VCC: One battery's VCC is connected to the 12V input of the L298N DC motor drivers, and the other is connected to the GND of another battery.

Lipo Battery

• GND: Connected to the GND pin of the Arduino UNO.
• VCC: Connected to the COM pin of the Toggle Switch.

Arduino UNO

• Vin: Connected to the L1 pin of the Toggle Switch.
• 3.3V: Connected to the cathodes of the blue LEDs.
• 5V: Connected to the VCC of the HC-05 Bluetooth Module and the 5V inputs of the L298N DC motor drivers.
• GND: Common ground for the circuit, connected to various components.
• Digital Pins (D0-D13): Connected to the HC-05 Bluetooth Module and the L298N DC motor drivers for control signals.

L298N DC Motor Driver

• OUT1-OUT4: Connected to the pins of the DC Motors.
• 12V: Connected to the VCC of the Polymer Lithium Ion Battery.
• GND: Connected to the GND of the circuit.
• 5V: Connected to the 5V output from the Arduino UNO.
• ENA, ENB, IN1-IN4: Connected to the corresponding digital pins on the Arduino UNO for motor control.

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:

}

This code is a template and does not contain any specific functionality. It is structured with a setup() function that runs once when the microcontroller is powered on or reset, and a loop() function that runs continuously, allowing the microcontroller to perform operations and respond to inputs.

Additional Notes

• The provided code for the Arduino UNO is a placeholder and needs to be populated with the logic to control the DC motors via the L298N motor drivers and to handle Bluetooth communication with the HC-05 module.
• The wiring details assume that the electrical nets provided are correctly connected, and no additional connections are present.
• The batteries should be handled with care, ensuring proper charging and discharging to prevent damage or hazards.
• The toggle switch provides a means to safely power the circuit on and off without disconnecting the batteries.