Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with a Servo motor, an HC-SR04 Ultrasonic Sensor, an OV7670 camera module, and an ESP8266 ESP-01 WiFi module. The circuit is powered by a 5V battery. The Arduino UNO controls the Servo motor and reads data from the Ultrasonic Sensor and the camera module. The WiFi module is used for wireless communication.

Component List

1. Servo

   • Pins: GND, VCC, PWM
   • Description: A motor that can be controlled to move to a specific position.
   • Purpose in Circuit: Used for precise control of mechanical movement.

2. Arduino UNO

   • 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
   • Description: A microcontroller board based on the ATmega328P.
   • Purpose in Circuit: Acts as the main controller for the circuit.

3. 5V Battery

   • Pins: positive, negative
   • Description: A power source providing 5V.
   • Purpose in Circuit: Supplies power to the circuit components.

4. HC-SR04 Ultrasonic Sensor

   • Pins: VCC, TRIG, ECHO, GND
   • Description: A sensor used to measure distance by using ultrasonic waves.
   • Purpose in Circuit: Measures distance to objects.

5. OV7670 Camera Module

   • Pins: RET, PWDN, D1, D0, D3, D2, D4, D5, D6, PLK, XLK, D7, VS, HS, SCL, SDA, 3.3V, DGND
   • Description: A camera module used for capturing images.
   • Purpose in Circuit: Captures images for processing.

6. ESP8266 ESP-01 WiFi Module

   • Pins: TXD, CH_PD, RST, VCC, GND, GPIO_2, GPIO_0, RXD
   • Description: A WiFi module used for wireless communication.
   • Purpose in Circuit: Provides wireless communication capabilities.

Wiring Details

Servo

• GND connected to 5V Battery negative terminal.
• VCC connected to 5V Battery positive terminal.
• PWM connected to Arduino UNO D11.

Arduino UNO

• 3.3V connected to OV7670 3.3V and ESP8266 ESP-01 WiFi Module VCC.
• A4 connected to OV7670 SDA.
• A5 connected to OV7670 SCL.
• D11 connected to Servo PWM.
• D10 connected to HC-SR04 Ultrasonic Sensor ECHO.
• D9 connected to HC-SR04 Ultrasonic Sensor TRIG.
• D3 connected to ESP8266 ESP-01 WiFi Module TXD.
• D2 connected to ESP8266 ESP-01 WiFi Module RXD.

5V Battery

• negative connected to Servo GND, HC-SR04 Ultrasonic Sensor GND, OV7670 DGND, and ESP8266 ESP-01 WiFi Module GND.
• positive connected to Servo VCC and HC-SR04 Ultrasonic Sensor VCC.

HC-SR04 Ultrasonic Sensor

• GND connected to 5V Battery negative terminal.
• VCC connected to 5V Battery positive terminal.
• TRIG connected to Arduino UNO D9.
• ECHO connected to Arduino UNO D10.

OV7670 Camera Module

• DGND connected to 5V Battery negative terminal.
• 3.3V connected to Arduino UNO 3.3V.
• SDA connected to Arduino UNO A4.
• SCL connected to Arduino UNO A5.

ESP8266 ESP-01 WiFi Module

• GND connected to 5V Battery negative terminal.
• VCC connected to Arduino UNO 3.3V.
• TXD connected to Arduino UNO D3.
• RXD connected to Arduino UNO D2.

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 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 microcontroller.