Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with multiple servos, a Bluetooth module, an ultrasonic sensor, a rocker switch, and a PWM servo breakout board. The circuit is powered by a 12V battery and includes connections for power, ground, and signal lines to control the various components.

Component List

1. Arduino UNO

   • Description: 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. Servo (Wokwi Compatible)

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

3. Adafruit PCA9685 PWM Servo Breakout

   • Description: 16-channel PWM driver.
   • Pins: 5.0V, GND, PWRIN, PWM7, PWM6, PWM5, PWM4, PWM3, PWM2, PWM1, PWM0, VCC, SDA, SCL, OE, PWM15, PWM14, PWM13, PWM12, PWM11, PWM10, PWM9, PWM8

4. HC-05 Bluetooth Module

   • Description: Bluetooth module for wireless communication.
   • Pins: Key, VCC, TXD, RXD, State, GND

5. HC-SR04 Ultrasonic Sensor

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

6. Rocker Switch

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

7. 12V Battery

   • Description: Power source.
   • Pins: -, +

Wiring Details

Arduino UNO

• 5V connected to:

  • Servo (Wokwi Compatible) V+
  • Adafruit PCA9685 PWM Servo Breakout VCC
  • HC-SR04 Ultrasonic Sensor VCC
  • HC-05 Bluetooth Module VCC

• GND connected to:

  • 12V Battery -
  • Adafruit PCA9685 PWM Servo Breakout GND
  • Servo (Wokwi Compatible) GND
  • Rocker Switch output
  • HC-05 Bluetooth Module GND
  • HC-SR04 Ultrasonic Sensor GND

• A4 connected to Adafruit PCA9685 PWM Servo Breakout SCL

• A5 connected to Adafruit PCA9685 PWM Servo Breakout SDA

• D13 connected to HC-SR04 Ultrasonic Sensor ECHO

• D12 connected to HC-SR04 Ultrasonic Sensor TRIG

• D2 connected to Rocker Switch input

• D1 connected to HC-05 Bluetooth Module RXD

• D0 connected to HC-05 Bluetooth Module TXD

Servo (Wokwi Compatible)

• V+ connected to:

  • 12V Battery +
  • Arduino UNO 5V
  • Adafruit PCA9685 PWM Servo Breakout VCC
  • HC-SR04 Ultrasonic Sensor VCC
  • HC-05 Bluetooth Module VCC

• GND connected to:

  • 12V Battery -
  • Arduino UNO GND
  • Adafruit PCA9685 PWM Servo Breakout GND
  • Rocker Switch output
  • HC-05 Bluetooth Module GND
  • HC-SR04 Ultrasonic Sensor GND

• PWM connected to Adafruit PCA9685 PWM Servo Breakout:

  • PWM2
  • PWM0
  • PWM3
  • PWM4
  • PWM5
  • PWM6

Adafruit PCA9685 PWM Servo Breakout

• VCC connected to:

  • 12V Battery +
  • Arduino UNO 5V
  • Servo (Wokwi Compatible) V+
  • HC-SR04 Ultrasonic Sensor VCC
  • HC-05 Bluetooth Module VCC

• GND connected to:

  • 12V Battery -
  • Arduino UNO GND
  • Servo (Wokwi Compatible) GND
  • Rocker Switch output
  • HC-05 Bluetooth Module GND
  • HC-SR04 Ultrasonic Sensor GND

• SCL connected to Arduino UNO A4

• SDA connected to Arduino UNO A5

HC-05 Bluetooth Module

• VCC connected to:

  • 12V Battery +
  • Arduino UNO 5V
  • Adafruit PCA9685 PWM Servo Breakout VCC
  • Servo (Wokwi Compatible) V+
  • HC-SR04 Ultrasonic Sensor VCC

• GND connected to:

  • 12V Battery -
  • Arduino UNO GND
  • Adafruit PCA9685 PWM Servo Breakout GND
  • Servo (Wokwi Compatible) GND
  • Rocker Switch output
  • HC-SR04 Ultrasonic Sensor GND

• RXD connected to Arduino UNO D1

• TXD connected to Arduino UNO D0

HC-SR04 Ultrasonic Sensor

• VCC connected to:

  • 12V Battery +
  • Arduino UNO 5V
  • Adafruit PCA9685 PWM Servo Breakout VCC
  • Servo (Wokwi Compatible) V+
  • HC-05 Bluetooth Module VCC

• GND connected to:

  • 12V Battery -
  • Arduino UNO GND
  • Adafruit PCA9685 PWM Servo Breakout GND
  • Servo (Wokwi Compatible) GND
  • Rocker Switch output
  • HC-05 Bluetooth Module GND

• ECHO connected to Arduino UNO D13

• TRIG connected to Arduino UNO D12

Rocker Switch

• output connected to:

  • 12V Battery -
  • Arduino UNO GND
  • Adafruit PCA9685 PWM Servo Breakout GND
  • Servo (Wokwi Compatible) GND
  • HC-05 Bluetooth Module GND
  • HC-SR04 Ultrasonic Sensor GND

• input connected to Arduino UNO D2

12V Battery

• + connected to:

  • Servo (Wokwi Compatible) V+
  • Arduino UNO 5V
  • Adafruit PCA9685 PWM Servo Breakout VCC
  • HC-SR04 Ultrasonic Sensor VCC
  • HC-05 Bluetooth Module VCC

• - connected to:

  • Arduino UNO GND
  • Adafruit PCA9685 PWM Servo Breakout GND
  • Servo (Wokwi Compatible) GND
  • Rocker Switch output
  • HC-05 Bluetooth Module GND
  • HC-SR04 Ultrasonic Sensor GND

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 documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the Arduino UNO microcontroller.