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koksoybedirhan
Associate III
November 23, 2023
Question

OV7670 FIFO Camera Wiring

  • November 23, 2023
  • 1 reply
  • 3914 views

Hi,

I am working on the OV7670 FIFO camera module with NUCLEO-H745ZI-Q board. My purpose is taking the image data and saving SD card via BMP format. I tried a lot of codes from github and Youtube but it didn't work. Finally I found the Udemy course video and he explained all the things clearly. But for the wiring part, there are some not clear points. I shared two pictures from the video. In the first picture he checked the schematic and after the second picture he did all the wiring and it works fine. But the problem is, in the schematic 6th and 10th wire is HREF and OE. But for the wiring picture has no HREF and OE pins but it has extra WRST and REN pins. So the question is, are there any relation about the HREF&OE pins and WRST&REN pins? If yes, what is the correct wiring for four of them?

The schematic picture: 
https://www.haoyuelectronics.com/Attachment/OV7670%20+%20AL422B(FIFO)%20Camera%20Module(V2.0)/OV7670%20+%20AL422B(FIFO)%20Camera%20Module(V2.0)%20Schematic.pdf
The wiring photo:

koksoybedirhan_0-1700738467779.png

Also, for the OV7670 FIFO camera, it's Version 2.0 not 3.0.

And the last thing, if anyone wonder the Udemy video link: https://www.udemy.com/course/stm32cubeide-ile-gomulu-yazlim-tasarim/learn/lecture/26306786#search

 

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1 reply

KDJEM.1
KDJEM.1
Technical Moderator
November 24, 2023

Hello @koksoybedirhan,

I checked the OV7670+ AL422B (FIFO datasheet) PCB pin and I found that PIN 6 and PIN 10 correspond to HREF and OE/CS respectively as shown in the below figure.

KDJEM1_0-1700831047390.png

I suggest you also check this issue with the camera module provider.

Thank you.

Kaouthar

 

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K
koksoybedirhanAuthor
Associate III
November 29, 2023

New update,

I found those schematic in os.mbed.com:
https://os.mbed.com/media/uploads/cylax/ov7670_fifo_sch_v1.pdf
https://os.mbed.com/media/uploads/cylax/5591708c-5263-493e-a572-4e1448b77a88.jpg

And for more information, this is the topic where I found the schematic: https://os.mbed.com/users/edodm85/notebook/ov7670-camera-module/ 

 

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