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Arduino - controlling fans and door/hatch greenhouse

Former Member

Hi

 

I have not got a arduino yet, just checking what this thing can do for my greenhouse.

 

I want something that can do this :

 

  • Open a small door/hatch temp controlled
  • Start two fans 12v temp controlled
  • Watering system (thats for last)
  • Turn on and off heat and lights (for now this is 220v)

 

Can arduino controll 220v also? For me I've some stuff on 5-12v and 220v from my garage

 

Could anyone give a parts lits of what I need for this? Never used anything like this, except for raspberry pi, but thats not the same?

 

Frode

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  • Frode,

                   you have received some good feedback but to me you seem to have slightly digressed  from your original goal of various greenhouse controls.  The 'kit' you propose is fine to learn but with no specific purpose.  My belief is that any project should be broken down into small parts and each required function or feature developed and understood.  Then all the individual aspects are brought together to complete the project.  Peter has written brilliant tutorials on MOSFETs and controlling high current loads but that does not mean you have to discount relays optically coupled to the Arduino.  My firm and strong belief is that to develop your craft you should learn all aspects and means of controlling loads.  Those ex car fans you have are pretty brutal electrically but easily  tamed by an appropriately rated relay.  Once that is mastered then using full electronic control offers benefits such as speed control.  Those MOSFET modules you provided the link to look good, along with the datasheet posted by Peter.  I will certainly be trying those out.  I think in your overall project goal there is a need for relays at some stage as well as the MOSFET's so please try and learn about both.

    Best of luck with your project and I'll help were I can.

    Bob

  • in reply to bobcroft

    Yup, totally agree, and it would be good to check the current requirements on those fans as the eBay once have a limit that may not be enough for this and therefor you will need to build your own or go the relay route, the get approach if able to handle the load will allow pwm control to vary the speed, not something you would want to do with a relay

     

    Sent from my iPhone

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  • in reply to bobcroft

    Yup, totally agree, and it would be good to check the current requirements on those fans as the eBay once have a limit that may not be enough for this and therefor you will need to build your own or go the relay route, the get approach if able to handle the load will allow pwm control to vary the speed, not something you would want to do with a relay

     

    Sent from my iPhone

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