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VGA OV7670; FIFO or no FIFO?

Discussion in 'General Electronics Discussion' started by Spike124, Sep 8, 2015.

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  1. Spike124

    Spike124

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    Aug 11, 2015
    I have just bought a VGA OV7670 camera module to use on either my Arduino Uno or Arduino Mega 2560 & have just read something about needing a 'FIFO'! Can anyone enlighten me please? Thanks
     

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  2. Gryd3

    Gryd3

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    Jun 25, 2014
    FIFO . First-in, First-out.

    Can you share a model number for the camera module? It may just be talking about a buffer.
    The camera can dump information incredibly quickly. Using a buffer allows a picture to be taken right away, and allow the microcontroller to process it be reading it from the buffer.
     
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  3. Spike124

    Spike124

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    Aug 11, 2015
    VGA OV7670 IS the model number from what I can see. I think you're right though about FIFO being somewhere to dump the pictures. Looking on eBay, I've seen exactly the same camera but with a chip on the back & it's advertised as 'with FIFO'. But I've also seen things about wireless FIFO. I'm wondering if I rig up a micro sd card unit that I've got, if I could use THAT as a FIFO?
     
  4. Gryd3

    Gryd3

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  5. Old Steve

    Old Steve

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    Jul 23, 2015
    Spike, looking at the datasheet for the camera module, it already has an on-board FIFO. Check out the 'Functional block Diagram', (Figure 2).
    http://www.voti.nl/docs/OV7670.pdf
     
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