Introduction: OV7670 Arduino Camera Sensor Module Framecapture Tutorial
The camera module is powered from a single +3.3V power supply. An external oscillator provide the clock source for camera module XCLK pin. With proper configuration to the camera internal registers via I2C bus, then the camera supply pixel clock (PCLK) and camera data back to the host with synchronize signal like HREF and VSYNC. The OV7670 camera module is a low cost 0.3 mega pixel CMOS color camera module, it can output 640x480 VGA resolution image at 30fps. The OV7670 camera module build in onboard LDO regulator only single 3.3V power needed and can be used in Arduino, STM32,Chipkit, ARM, DSP , FPGA and etc.
- Optical size 1/6 inch
- Resolution 640x480 VGA
- Onboard regulator, only single 3.3V supply needed
- Mounted with high quality F1.8 / 6mm lens
- High sensitivity for low-light operation
- VarioPixel® method for sub-sampling
- Automatic image control functions including: Automatic
- Exposure Control (AEC), Automatic Gain Control (AGC), Automatic White Balance (AWB), Automatic
- Band Filter (ABF), and Automatic Black-Level Calibration (ABLC)
- Image quality controls including color saturation, hue, gamma, sharpness (edge enhancement), and anti-blooming
- ISP includes noise reduction and defect correction
- Supports LED and flash strobe mode
- Supports scaling
- Lens shading correction
- Flicker (50/60 Hz) auto detection
- Saturation level auto adjust (UV adjust)
- Edge enhancement level auto adjust
- De-noise level auto adjust
Step 1: Material Preparation
In this tutorial, you will need :
1. Arduino Uno Board and USB
2. OV7670 Arduino Camera Sensor Module STM32
3.10K resistor X 2
4. 4.7K Resistor X2
and you will be using Arduino IDE and Java.
Step 2: Pinout Connection
Connect your circuit as illustrated on the picture above.
Step 3: Java
You have to download this to be able to interface this camera sensor module on your pc.Open the zip file and install to your computer. By default, this will be install to your c drive in your program files folder. As for mine, it is stored in C:\Program Files\Java\jdk1.8.0_74. You can refer picture above.
NOTE : This jdk-8u74-windows-i586.rar file is quite big.
Step 4: Sample Source Code
This sample source code is originally from this link. Download this sample source code, open it on your Arduino IDE, connect your Arduino Uno Board to your computer and upload it. Select the correct board and port before uploading this source code. Refer image above for help.
NOTE : Don't mind that it does not recognize some libraries in the beginning of the file. If it bothers you, comment the whole line out with //
Step 5: Checking Your Port
Find out what USB port your Arduino is connected to, something like COM4 or COM5. You could check it on your Control Panel > Device Manager > Ports (COM & LPT) > right click > Properties > Port Settings > Advanced > COM Port Number > /Select Your Port Number/. You can refer the image above for help. As for mine, it is port COM5.
Step 6: Com_#.rar
Depending on what port number your Arduino is connected to, download the corresponding file. COM1 = com_1.rar , COM2 = com_2.rar and etc. Open your com#.rar on WinRaR, extract/copy the 'code' folder from com_#.rar, go to Local Disk > Program Files > Java > jdk1.8.0_74 > bin and paste it there. you can refer the picture above for a better understanding.
Step 7: C:\out
You have to create a new folder on your c drive / Local Disk (C:). This will be your camera module sensor's taken picture's destination. Name this folder as out (it could be anything though).
Step 8: Extra.rar
1. Download and extract the Extra.rar file below and open it. As you could see, there is src folder, lib folder and "win32com.dll". You have to copy and placed "win32com.dll" in the "C:\Program Files\Java\jdk1.8.0_74\jre\bin" directory.
2. Then, open the lib and you could see the "comm.jar" and "javax.comm.properties" in it. Copy and paste the "comm.jar" in "C:\Program Files\Java\jdk1.8.0_74\jre\lib\ext" and "javax.comm.properties" in the "C:\Program Files\Java\jdk1.8.0_74\jre\lib" directory.
NOTE : it may ask for administrator permission, just proceed anyway.
Step 9: CMD
Open cmd and open the folder wherein the code folder is by writing its address. mine is "C:\Program Files\Java\jdk1.8.0_74\bin". Click enter and it will give u "C:\Program Files\Java\jdk1.8.0_74\bin>". Now, write "java code.SimpleRead". It supposed to be like this---> C:\Program Files\Java\jdk1.8.0_74\bin>java code. SimpleRead. You can refer image for help.
Step 10: Result
You can see the picture taken from your OV7670 Camera Module Sensor in your our folder in c drive.
Step 11: Troubleshooting
1. If your cmd cannot find images, try switching the USB of the arduino from a USB2.0 to a USB3.0 (blue socket) or vice versa.
2 If you receive scrambles pictures, you need to edit the sample source code. Edit line: wrReg(0x11, 12); try changing the 12 to 11/10/9/13. Upload it to the arduino and run the cmd code again.
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my Arduino Is connected with com 6 here here the code is not avaible
how can I find address of file to write in cmd
what is bin and paste
what does that 8 to 10 from the above mean please any one send a video for help
Hi can somebody help me on how to retrieve image from ov7670 CMOS camera. It only shows port name come and looking for image.
Hello, i had the same issue for almost 2 weeks. Took me awhile to resolve, but i realized the problem was with my wiring: i hadnt used the right resistors (4.7k ohms). Once i fixed this, camera lit up. Hope this helped.
Hello, could someone please help me with this. The cmd program stops at "Looking for image". I'll appreciate any assistance
could someone help me with this error ?
Why my cmd can't find the image, despite the troubleshooting steps I've done all
The sketch 'Computer_Nerd' will compile, but will not download to the Arduino. Using port COM4, the correct port for my device & downloaded 'com_4.rar' & placed it int the directory you instructed. 'I get an error 'avrdude: ser_open(): can't open device '\\.\COM9': The system cannot find the file specified'.
Yes I did it but it stops at looking at image can u help
i am trying my code but the problem is my arduino having a port no, 7 and it is not available on the site .
could you send it to me at email@example.com
change it port no 7 to port no 5 in device manager
i am using ov7670 module with arduino but the problem raised when i am running this code is the image is black and white
1. how can i make it colour full
the next problem is
2. the image is not clear when i am changing the wereg ( ) value
3. the image is comming out as a output from is camera and save in a folder is overwritting every time when i am running code again.
try this its colourfull
It has to be jdk not jre place
when I'm trying to execute a command line in the command prompt im getting an error as <" C:\Program Files\Java\jdk\bin>java code.SimpleRead
Error loading win32com: java.lang.UnsatisfiedLinkError: C:\Program Files\Java\jdk\jre\bin\win32com.dll: Can't load IA 32-bit .dll on a AMD 64-bit platform Can't load IA 32-bit .dll on a AMD 64-bit platform ">
can someone help me how to resolve the error?
we can resolve this by installing jdk available in the tutorial
and then you need to replace the program files with program files (x86)
Hi, the code worked for me, but I received scrambles pictures no matter which value I set in the code (I have tried 8 to 14 in the wrReg(0x11, 12) ). Could somebody help me with this problem? Thank you.
Problem solved! I got scrambles pictures before because I had bad connections in the breadboard. After it worked so well after soldering the circuit. Thanks for this excellent guide.