Connecting Camera to Arduino System

Jul 8, 2024

Connecting the Camera to the Arduino System

Introduction

In this lesson, we will pair a camera with the Arduino system. This lesson is important for all those interested in Arduino systems and controllers.

Project Components

  • Camera of a known type (like OV7670)
  • Arduino board (Uno)
  • Breadboard
  • 10 kΩ resistor
  • 1 kΩ resistor
  • 680 Ω resistor
  • Various connection wires for the experiment

Circuit and Connections

Steps

  1. Connect 3.3V from Arduino to the breadboard

    • Connect a 1 kΩ resistor to the ground
    • Then to a 680 Ω resistor, and connect to the D3 pin on the Arduino
    • Voltage pin (voltage divider) to the SCL pin on the camera

  2. Connecting 10 kΩ resistors

    • Connected to the 3.3V
    • Branching out to the A5 and A4 pins on the Arduino (for I2C)

  3. Additional Connections

    • D2 to VSYNC on the camera
    • D12 to PCLK

  4. Connecting power and ground on the camera

    • 3.3V to 3.3V
    • GND to GND

  5. Connecting the remaining pins

    • D7, D6, D5, D4 on the camera to D7, D6, D5, D4 on the Arduino
    • D3, D2, D1, D0 on the camera to A3, A2, A1, A0 on the Arduino

Loading the Program

  1. Download the program from the provided links

    • Click on the link to download the first and second program from GitHub

  2. Open the files in the Arduino program

    • Move the files to the appropriate program folders (under tools and libraries)

Program Settings

  1. Open the program (OV7670)

    • Set the camera value to 3 (to work with Arduino and serial on the computer)
    • Change the value to 1 if there is a small screen

  2. Set up the UART

    • Set the value to 5 to work with most types of Arduino
    • Confirm screen settings (320x240, RGB)

Final Operation

  1. Upload the program to the Arduino

    • Ensure to use the correct COM port
    • Click on Upload

  2. Verify the operation

    • An image of the Eiffel Tower should appear on the screen

  3. Practical test

    • Aim the camera and use a multimeter to measure clarity

Final Experiment

  • Aim the camera to test image clarity
  • Display frame results and ensure image clarity
  • Adjust frame settings according to the type of camera used

Full transcript