atos @atos ?

active 3 years, 1 month ago
  • atos and AvatarIsak Gerson are now friends   3 years, 1 month ago · View

  • atos commented on the blog post Pumpless Hydroponics With Moving Water   3 years, 10 months ago · View

    @James Nutter You would have to place the reservoir above the pots, all the sensor does is allowing the water to flow when it gets dry.

  • atos commented on the blog post pumps.   3 years, 10 months ago · View

    The quality of the pump would matter a lot I figured, since they are a critical component in computer systems I’m willing to give it a shot in either case.

    I’ll check the design out, bought plenty of tubing.

  • atos wrote a new blog post: pumps.   3 years, 10 months ago · View

    The basic construction for my first windowfarm is complete since  long. I made an effort to build an airlift. However I encountered some problems which brought me to the point where I decided to boycott the entire airlift concept. It just requires too much specific parts and is a hassle to setup and on top [...]

  • atos commented on the blog post Pumpless Hydroponics With Moving Water   3 years, 10 months ago · View

    You should checkout the blumat concept, I suppsoe its not exactly what you’re looking for but with mediums like coco coir it might prove useful. http://www.youtube.com/watch?v=UWPLr0Selh8

  • atos posted a new activity comment:   3 years, 10 months ago · View

    Suggestions on what groups to join and mention this btw?

    In reply to - atos posted an update in the group Sweden: So, after a bit trial and error I came to the conclusion that PET-bottles is kind of rough to cut with a knife or scalpel at least the bottom hole for linking modules together since they are way thicker there. No injuries caused, luckily. Anyone got suggestions where to [...] · View
  • atos posted a new activity comment:   3 years, 10 months ago · View

    There are probably a lot of retailers. But heres one http://www.coolingstuff.se/c/28/pumpar/a1/1

    Spoke to a mate and he seems to be of the opinion that eheim would be the brand to go with. However these don’t provide the pressure needed for the windowfarm designs.

    I will do so.

    In reply to - atos posted an update in the group Sweden: So, after a bit trial and error I came to the conclusion that PET-bottles is kind of rough to cut with a knife or scalpel at least the bottom hole for linking modules together since they are way thicker there. No injuries caused, luckily. Anyone got suggestions where to [...] · View
  • atos posted a new activity comment:   3 years, 10 months ago · View

    I found suitable pumps normally used in watercooled computer systems. The specs looks excellent om paper, high pressure, low power consumption and runs on 12V. Anything you tried using before? Or am I on to something? The prices seems acceptable compared to aquarium pumps even if they are meant for water and not air.

    In reply to - atos posted an update in the group Sweden: So, after a bit trial and error I came to the conclusion that PET-bottles is kind of rough to cut with a knife or scalpel at least the bottom hole for linking modules together since they are way thicker there. No injuries caused, luckily. Anyone got suggestions where to [...] · View
  • atos posted a new activity comment:   3 years, 10 months ago · View

    Jag håller på att konstruera en av den simplare typen.

    När ämnet ändå tas upp rörande en hållbar livsstil kan jag passa på att tipsa om ’earthship’ konceptet. Ta en kik på detta http://www.vaxhuset.se/

    In reply to - Albin Noreen posted an update in the group Sweden: Hej! Vi är en grupp studenter på Göteborgs universitet och Handelshögskolan i Göteborg som skall anordna en inspirationsdag kallad Utblick i april 2011. Syftet med dagen är att inspirera till en hållbar livsstil och tipsa om olika sätt man som individ kan agera för en bättre miljö. Det [...] · View
  • atos posted a new activity comment:   3 years, 11 months ago · View

    Um actually just trying to modify an existing 230V pump to 12V shouldn’t be too hard. Sure it might avoid possible warranty (duh), but its not like they are expensive.

    In reply to - atos posted an update in the group Sweden: So I got this other idea. Saying one were to run a car battery at about 60Ah and an air pump with a timer at abut 3-4W which a 12V-127V/230V transformer attached to it, one could basically run a hydro system anywhere. Of course this would require a solar [...] · View
  • atos posted a new activity comment:   3 years, 11 months ago · View

    I gave this some thought however didn’t realize it was that high amount. It Should be possible to place a timer circuit before the inverter though to minimize the drain occurring from it. I reckon it should be easier to accomplish for those without the necessary skills in electronics. I noticed from your other posts that you’re a fair bit ahead of me, hehe.

    Yeah removing the inverter would remove one of the few issues. Biltema appears to have quite a few 12V pumps. Tried using any of these? Most of em are not designed for continued use according to them, but It’s not like they will be running for more than a few minutes per hour.

    In reply to - atos posted an update in the group Sweden: So I got this other idea. Saying one were to run a car battery at about 60Ah and an air pump with a timer at abut 3-4W which a 12V-127V/230V transformer attached to it, one could basically run a hydro system anywhere. Of course this would require a solar [...] · View
  • atos joined the group AvatarNorway   3 years, 11 months ago · View

  • atos posted a new activity comment:   3 years, 11 months ago · View

    Brilliant idea with freezing! I’ll try that tomorrow. A drill with approx 24mm in diameter should suffice, holesaws are expensive. :(

    In reply to - atos posted an update in the group Sweden: So, after a bit trial and error I came to the conclusion that PET-bottles is kind of rough to cut with a knife or scalpel at least the bottom hole for linking modules together since they are way thicker there. No injuries caused, luckily. Anyone got suggestions where to [...] · View
  • atos posted an update in the group AvatarSweden:   3 years, 11 months ago · View

    So I got this other idea.

    Saying one were to run a car battery at about 60Ah and an air pump with a timer at abut 3-4W which a 12V-127V/230V transformer attached to it, one could basically run a hydro system anywhere. Of course this would require a solar panel attached to the battery for maintenance charging.

    Anyone tried running a setup like this? Cause that would make the entire concept with windowfarms even more sturdy and environmentally friendly. And you would only have to add water and nurts.

    • Avatar Image
      Trygve Henriksen · 3 years, 11 months ago

      Your biggest problem is that the inverter is max 80 – 85% efficient, and draws a lot of power even when not loaded, or loaded lightly.
      This one, from Biltema(a typical 150W inverter) http://www.biltema.no/Documents/manualer/31/31-615.pdf draws an ’idle’ current of up to .25A
      If the inverter is connected all the time(with a timer on the output, to switch the pump on and off), it’ll completely drain a 60AH battery in 60AH /(.25 * 24 * 12) = 0.833 days… (even the 75W models and smaller draw a significant current)
      That means placing the control circuitry on the 12V line between the battery and inverter. There’s not that much available in the shops, which probably means building your own.

      A better alternative would be to find a pump that runs off of 12V and hook up a simple microcontroller and relay to control the pump.
      There are some battery-powered air-pumps out there, but I’m not certain how good they are.
      One WFer is experimenting with a normal DC motor and a home-built ’Archimedes screw’ design.

      • Avatar Image
        Patrik · 3 years, 5 months ago

        Well instead of using a inverter and lose lots of power in conversion try using a 12V pump or compressor, ”biltema” usually sell low bar compressors for under 150:- sek that do run on 12V

        another good source for a ”pump” is the car junk yard, as cars do use 12V pumps to push liquid to the windows. (im wouldnt recommend using one before cleaning it as its probably been pumping round some sort of alcohol thats probably toxic)

    • Avatar Image
      atos · 3 years, 11 months ago

      I gave this some thought however didn’t realize it was that high amount. It Should be possible to place a timer circuit before the inverter though to minimize the drain occurring from it. I reckon it should be easier to accomplish for those without the necessary skills in electronics. I noticed from your other posts that you’re a fair bit ahead of me, hehe.

      Yeah removing the inverter would remove one of the few issues. Biltema appears to have quite a few 12V pumps. Tried using any of these? Most of em are not designed for continued use according to them, but It’s not like they will be running for more than a few minutes per hour.

      • Avatar Image
        atos · 3 years, 11 months ago

        Um actually just trying to modify an existing 230V pump to 12V shouldn’t be too hard. Sure it might avoid possible warranty (duh), but its not like they are expensive.

        • Avatar Image
          Trygve Henriksen · 3 years, 11 months ago

          Most aquarium air-pumps cannot be modified to run on 12V as they actually use the phases of the AC to energise an electromagnet and pull on an arm to move a rubber membrane.

      • Avatar Image
        Trygve Henriksen · 3 years, 11 months ago

        The cheapest 12V pumps I can think of is window washer systems, but I have no idea how high they can pump. (I have a ’dual pump’ from Biltema that I’m planning to use to top-up the reservoirs, but haven’t had much time to experiment)
        Those pumps aren’t designed for more than a few seconds of continuous use, though.

        It’s not that hard to set up some sort of controller to handle a 12V relay.

        hopefully, I get the time to do that this spring…

        • Avatar Image
          Patrik · 3 years, 5 months ago

          for simple implementation of more advanced ”controlling” i would recommend a arduino available from electrokit.se as microprocessors dont use much power and can probably increase the efficency

  • atos posted an update in the group AvatarSweden:   3 years, 11 months ago · View

    So, after a bit trial and error I came to the conclusion that PET-bottles is kind of rough to cut with a knife or scalpel at least the bottom hole for linking modules together since they are way thicker there. No injuries caused, luckily.

    Anyone got suggestions where to obtain suitable air pumps? I’m leaning towards ebay or tradera or even alibaba. The Swedish aquarium shops I’ve found on the web are way overpriced.

    • Avatar Image
      Trygve Henriksen · 3 years, 11 months ago

      I got a Sera 550R from http://akvarieudstyr.dk/
      It’s also a good placeto get some tubing.

      If you fill the bottles with water and freeze them they should be easier to cut.
      (You may even be able to cut the large hole in the side with a ’hole saw’ bit on the drill)
      You definitely need a hole saw for the hole in the bottom.

      A lot of other stuff can be gotten from Biltema.
      (I posted about that in the Norway group)

      • Avatar Image
        atos · 3 years, 10 months ago

        I found suitable pumps normally used in watercooled computer systems. The specs looks excellent om paper, high pressure, low power consumption and runs on 12V. Anything you tried using before? Or am I on to something? The prices seems acceptable compared to aquarium pumps even if they are meant for water and not air.

        • Avatar Image
          Trygve Henriksen · 3 years, 10 months ago

          Never thought about those pumps…
          (I haveno idea of the efficiency or longevity of that kind of pumps. Can you link to them?)

          You may want to post a completely new ’update’ or blog post and ask if others have considered them, as not many will see this post.

          • Avatar Image
            atos · 3 years, 10 months ago

            There are probably a lot of retailers. But heres one http://www.coolingstuff.se/c/28/pumpar/a1/1

            Spoke to a mate and he seems to be of the opinion that eheim would be the brand to go with. However these don’t provide the pressure needed for the windowfarm designs.

            I will do so.

            • Avatar Image
              atos · 3 years, 10 months ago

              Suggestions on what groups to join and mention this btw?

    • Avatar Image
      atos · 3 years, 11 months ago

      Brilliant idea with freezing! I’ll try that tomorrow. A drill with approx 24mm in diameter should suffice, holesaws are expensive. :(

  • atos and F. Wolf are now friends   3 years, 11 months ago · View

  • atos joined the group AvatarSweden   3 years, 11 months ago · View

    • Avatar Image
      Kristoffer Nolgren · 3 years, 7 months ago

      Hejhej! Har du byggt någon windowfarm? Vi ska bygga en ganska stor på Kulturhuset i Stockholm och letar efter andra som också byggt för att utbyta erfarenheter. Vi bjuder gärna på en Lunch! Om du vill och kan så nås jag bäst på kristoffer@nolgren.se (är just nu i Kanada, så telefon lämpar sig inte).

      Ha en härlig dag!

  • atos joined the group AvatarAquaponic Window Farms   3 years, 11 months ago · View

  • atos commented on the blog post NEW! How To: V3.0 MAMA w/participatory instructions (beta)   3 years, 11 months ago · View

    I’d like to point out that from a personal experience 7.0-7.5pH is only semi-optimal for a hydroponic systems. You would be best off keeping it lower (around 6.0-7.0pH preferably) to avoid nutrient deficiencies and/or lockouts. Also rainwater or water run through an RO-filter would also reduce the risk of pH fluctuations.

  • Anders became a registered member   3 years, 11 months ago · View

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