Eheim autofeeder

Request new hardware or ideas for the controller
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Joined: Fri Jul 20, 2012 9:42 am
PostPosted: Sat Mar 30, 2013 7:43 pm
I found an old blackberry charger that is now modded with a mono jack and i wired up the relay to a mono port and its working :) now i just need my feeder. I actually want to see if i can find room inside the unit for the relay.

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Location: Oakley, CA
PostPosted: Sat Mar 30, 2013 9:09 pm
lnevo wrote:I actually want to see if i can find room inside the unit for the relay.


I found an old 5v wall wart today so I'll either have to make or buy a step down converter to get down to 3.3v. I wanted to keep it all in the battery compartment of the feeder but I don't think I'll get away with it if I use a converter. I'll pick up a small RadioShack project box to put everything in then run a cable up to the feeder.

Let us know if you manage to stuff it all in the feeder. I'd like to see how you do it.

~Charlie
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PostPosted: Mon Apr 01, 2013 7:09 am
If it can't fit, I'll just put the relay it into a project box and swap the jack for a plug on the extension cable I made. :)

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Location: Oakley, CA
PostPosted: Mon Apr 01, 2013 10:16 am
I've been reading through the various mods and it should be easy enough to put the relay on a small board along with the components I need to bring the voltage down to 3.3v form 5v on the wall wart. I ordered a bunch of parts/pieces last week to build the projects from the book I'm reading and I'm just waiting for that to ship. I should have everything I need in that batch other than the relay. I'll pick up the relay from Radio Shack on the way home tonight.

Hopefully I can get this put together by next weekend and not turn my autofeeder into and expensive paperweight :)

~Charlie
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PostPosted: Thu Apr 04, 2013 6:52 pm
Got my feeder today and got everything installed. Was no way to get it stuffed in without doing the battery mod. I put it all in a small take out plastic container. I'm just gonna grab a small project box tomorrow. I tested plugging it in and unplugging. It triggers immediately. Can't wait to get this hooked up.
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PostPosted: Sun Apr 07, 2013 3:09 pm
Connected the feeder up today. Had to cut the clamp out a bit so i could attach it to the cross brace instead of the rim. Works like a charm. Its connected to my WC pump extension cord for now until I start on the revamp and my new code...

Here's some pics:
Image
Image
Image

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Joined: Fri Jul 20, 2012 7:13 am
Location: Oakley, CA
PostPosted: Fri Apr 19, 2013 1:09 pm
All my electronics parts/pieces finally came in and I'm ready to get going in on this but I have a question before I start. From the PDF attached to the page in this link (http://www.manhattanreefs.com/forum/diy ... pex-3.html) he is using the following items to convert his 5v DC wall wart to 3.2v DC to power the feeder.

    Supply List for building 5-­‐3.2V Converter.
  • 1-­‐330 Ohm Resistor
  • 1-­‐470 Ohm Resistor
  • 1-­‐4.875"x2.5"x1.5" Project Box
  • 1-­‐Dual Mini Board (213 Hole)
  • 1-­‐LM317T Adj. Voltage Regulator
  • 4-­‐DC Power Plug (Size-­‐N)
  • 4-­‐Coaxial Power Jack (Size-­‐N)
  • 1-­‐5v Power supply from around the house


For those of you that used this method over keeping the batteries to power the feeder have you had any problems with this? I'm still very new to electronics and I understand the *very* basics of this and how/why it works but in my research for DC to DC step-down converters I've read on many sites using this method is not all that great and/or "clean". Is there anything inherently wrong with going this route?

~Charlie

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PostPosted: Sat Apr 20, 2013 7:48 pm
I think you are just fine with that voltage regulator.
Roberto.

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PostPosted: Mon Apr 22, 2013 11:33 am
I'll give it a shot. Thanks, Roberto!

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Joined: Sun Jul 22, 2012 4:51 am
Location: Singapore
PostPosted: Sun Jul 14, 2013 10:38 am
Hi Piper and Inevo,

I recently brought a battery powered auto feeder and was thinking of powering it up via the ReefAngel instead of batteries also would be best if i can trigger a feed wirelessly.

Found this thread with lots of information but i am a idiot when it comes to electrical stuff. Possible to teach me what to buy and how to assemble?

1) power up the feeder using RA
2) trigger a feed wirelessly

Autofeeder is using 2x 1,5v AA battery

Thanks in advance :)
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