CAD/CAM Corner
Goldie Fishwater & the Internet-Connected Aquarium

The control interface for the tank (left). The water is at room temperature. Motor A is the camera platform. Motor B is the fish feeder. The Relay button controls the pumps and bubbler. The camera was raised to water surface level (right), and I had just used the feeder. Goldie was right there ready for the pellets.(Source: Cabe Atwell)
The control interface for the tank (left). The water is at room temperature. Motor A is the camera platform. Motor B is the fish feeder. The Relay button controls the pumps and bubbler. The camera was raised to water surface level (right), and I had just used the feeder. Goldie was right there ready for the pellets.
(Source: Cabe Atwell)

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Re: Other approaches
GTOlover   12/11/2013 11:46:36 AM
Another approach, though I am sure PETA and fish lovers would call me evil, buy another fish if this one happens to die while I am on vacation. For the cost of the various hardware and time, a lot of replacement goldfish could be bought.

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Re: Clever!
Battar   12/11/2013 10:29:10 AM
Maybe not pet fish, but... Take a look at this...



You want to keep a close eye on these pets. They are armed.

William K.
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Other approaches
William K.   12/11/2013 10:25:47 AM
Given the relative complexity of the system, it seems that there could be some alternative approaches that would be simpler and more reliable, and probably take up less space. For monitoring the temperature, a thermometer stuck to the far side of the tank could allow temperature checking as part of the video monitoring procedure. And with the price of cameras being quite low, multiple cameras would eliminate the need to have a moving platform and all of that control and drive hardware. The automatic feeder would still be a challenge and I can't offer much of a suggestion without understanding a lot more about how it is supposed to function.

Of course I realize that the whole project is designed to be an interesting writeup and so it had to include the various systems. But sometimes there is a simpler and more reliable way to do things, often without needing to include an Arduino.

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Re: Infringer
tekochip   12/11/2013 10:06:48 AM
I think Cabe and Goldie are safe.  The patent has a very narrow scope, always referring to a spa.

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Battar   12/11/2013 9:03:43 AM
Looks like you have infringed patent US6782309. (seriously). Prepare to be sued by your friendly local patent troll.

Elizabeth M
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Elizabeth M   12/11/2013 5:12:08 AM
Well that is certainly a clever way to ensure your fish is well looked after, even when you're not around. I doubt there is another pet fish in the world under such tight surveillance.

Charles Murray
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Toyota aquarium
Charles Murray   12/10/2013 6:20:10 PM
I wonder if the people who built the Toyota Highlander aquarium (which we wrote about recently) need an automatic fish feeder. Seems like a natural for a bunch of fish sitting around a tank at a trade show.,


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