Circuit Documentation

Summary

This circuit is designed to control multiple servo motors using an Arduino UNO microcontroller. It includes a power supply connection through a 2.1mm Barrel Jack with Terminal Block, and a HC-05 Bluetooth Module for wireless communication. The Arduino UNO is responsible for generating PWM signals to control the position of the servos and for handling the communication with the Bluetooth module.

Component List

Servo Motors

• Description: Servo motors are used for precise control of angular or linear position, velocity, and acceleration. They are commonly used in radio-controlled devices, robotics, and as actuators in many other applications.
• Pins: GND, VCC, PWM

Arduino UNO

• Description: Arduino UNO is a microcontroller board based on the ATmega328P. It has digital input/output pins, analog inputs, a USB connection for programming the board, a power jack, an ICSP header, and a reset button.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0-A5, SCL, SDA, AREF, D0-D13

2.1mm Barrel Jack with Terminal Block

• Description: This component is used to provide power to the circuit. It is typically connected to an external power supply.
• Pins: POS, NEG

HC-05 Bluetooth Module

• Description: The HC-05 module is an easy-to-use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.
• Pins: Key, VCC, GND, TXD, RXD, State

Wiring Details

Servo Motors

• Ground (GND): Connected to the GND pin of the Arduino UNO and the NEG pin of the Barrel Jack.
• Power (VCC): Connected to the Vin pin of the Arduino UNO and the POS pin of the Barrel Jack.
• PWM Signal: Each servo motor's PWM pin is connected to a unique digital pin on the Arduino UNO (D5, D6, D9, D3) for independent control.

Arduino UNO

• GND: Connected to the servo motors and the HC-05 Bluetooth Module.
• Vin: Provides power to the servo motors.
• Digital Pins (D0, D1, D3, D5, D6, D9): D0 is connected to the State pin of the HC-05 Bluetooth Module, D1 to the RXD pin of the HC-05, and D3, D5, D6, D9 to the PWM pins of the servo motors.
• 5V: Provides power to the HC-05 Bluetooth Module.

2.1mm Barrel Jack with Terminal Block

• POS: Connected to the VCC pins of the servo motors and the Vin pin of the Arduino UNO.
• NEG: Connected to the GND pins of the servo motors and the GND pin of the Arduino UNO.

HC-05 Bluetooth Module

• VCC: Connected to the 5V pin of the Arduino UNO.
• GND: Connected to the GND pin of the Arduino UNO.
• TXD: Not connected in the provided net list.
• RXD: Connected to the D1 pin of the Arduino UNO.
• State: Connected to the D0 pin of the 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:

}

Additional Notes

• The code provided is a template and does not contain any functional code for controlling the servo motors or interfacing with the HC-05 Bluetooth Module.
• The user should implement the setup and loop functions to initialize the servo motors and handle Bluetooth communication.
• The TXD pin of the HC-05 Bluetooth Module is not connected in the provided net list, which is required for two-way communication. This should be connected to a corresponding RX pin on the Arduino if two-way communication is needed.