Brian Candler wrote in post #1011575:
> Bob Carpenter. wrote in post #1011512:
>> I have not found any reasonably priced digital cameras - reasonable
>> being in the range of $50/unit for quantities of 100. Please let me know
>> if you have seen any.
>
> Bog-standard "webcams" are about half that price, and plug straight into
> a USB port. You can start by using "Zoneminder" to drive them - pretty
> cool software, but written in PHP. From that you can work out how to
> drive them in Ruby if you need.
>
> However, they are quite CPU-intensive to read, and it may not work well
> if you have more than two or three of them on one PC.
>
> There are ethernet-attached webcams which are not much more expensive
> than your target price, and give you a motion-JPEG stream output. I'm
> just racking my brains now to try and remember what the one I found was;
> I've a vague idea that it was by Edimax. The Zoneminder site may give
> you some pointers, or google "low-cost IP camera"
>
> Regards,
>
> Brian.

Thanks Brian! I will study these cameras and start looking in this 
direction. The CPU won't be a problem, and neither will PHP.

Thanks,

--Bob

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