Aquarium Outlet Controller

Thanks for posting. I've been thinking about a nice little starter project like this.


Much to ponder.....
 
could this be utilized for dosing pumps?


The relays are capable of switching AC outlets, so the controller could turn small pumps on and off (relays are rated for up to 10 amps, but I would keep the loads much more modest to be safe, and to keep the gauge of the AC wiring to a reasonable size).

Having said that, I don't have experience with dosing pumps. Would they turn on just based on time?
 
This is awesome thank you for sharing. Would not be too much work to add multiple temperature probes either.

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This is awesome thank you for sharing. Would not be too much work to add multiple temperature probes either.

Sent from my Pixel XL using Tapatalk


Correct! The one wire protocol involves unique addresses for every corresponding sensor, so you don't need to take up any additional pins on the Arduino board for more sensors.
 
This project is very cool. How accurate are the arduino temp probes? I'm thinking about building one to control heaters.
 
This project is very cool. How accurate are the arduino temp probes? I'm thinking about building one to control heaters.

I purchased the Vktech DS18b20 Waterproof Temperature sensors from Amazon. A five pack was $11.99. Accuracy is +/- 0.5 degrees C over the range of -10 C to +85 C. (spec was not provided for degrees F)
 
Doing a quick conversion on google is looks like the range is 14-185 F with roughly +/- 1 F. So not too bad. Thanks for your help.
 
I haven't checked the code on this instructable, but one advantage of the arduino is that it is easy to add a calibration factor to the code if you need to :)

Tim
 
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