greenhouse_water_fertilizer_basic.ino

This Arduino app is a basic timer I used to run a water pump for my greenhouse at timed intervals.

It turns on a relay to control a water pump. I recommend getting a properly approved setup if switching line voltage, or stick with the safer 9 or 12 volt pumps.

The second relay controls a fertilizer pump. In my case it's a smaller 9v pump that injects liquid fertilizer into the watering lines. Shut this pump off before the main pump so the lines get flushed with clean water at the end of the run.

You don't need to hook up the second relay if you don't need/want fertilizer injection.

Also, MIT license - in summary, feel free to use it for anything but don't blame me for anything

Enjoy!

-Nico

ntewinkel

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neilk over 8 years ago +1

Hi Nico Neat project. I agree it's not super accurate but it is definitely fit for purpose! Why does it need to be more accurate? However, if you wanted the opportunity to do more with the Arduino, you…

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neilk over 8 years ago

Hi Nico

Neat project.

I agree it's not super accurate but it is definitely fit for purpose! Why does it need to be more accurate?

However, if you wanted the opportunity to do more with the Arduino, you could look at Simon Monk's Timer Library. I've used it in a number of simple applications, instead of using the Delay function - it's very useful.

Neil
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ntewinkel over 8 years ago in reply to neilk

Right, I think I learned about the timer libraries *after* having done several projects this more manual-labour way!
However, counting milliseconds is not too cumbersome and does provide an interesting learning opportunity.
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ntewinkel over 8 years ago in reply to neilk

Right, I think I learned about the timer libraries *after* having done several projects this more manual-labour way!
However, counting milliseconds is not too cumbersome and does provide an interesting learning opportunity.
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