also in SMT flavours, but
apparently not as bright:<div><br></div><div> <a href="http://www.ebay.com.au/itm/290741652723">http://www.ebay.com.au/itm/290741652723</a></div><div> <a href="http://www.ebay.com.au/itm/251024873978">http://www.ebay.com.au/itm/251024873978</a></div>
<div> <a href="http://www.ebay.com.au/itm/261092332506">http://www.ebay.com.au/itm/261092332506</a></div><div><br><br><div class="gmail_quote">On 6 September 2012 08:04, Paul Szymkowiak <span dir="ltr"><<a href="mailto:paulszym+cchs@gmail.com" target="_blank">paulszym+cchs@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">>
<span style="color:rgb(34,34,34);font-size:13.333333969116211px;font-family:arial,sans-serif">Also you need UV for vitamin d production which cannot be produced by leds...for now. </span> <div>
<br></div></div><div>Would these not be suitable?</div><div><br></div><div> <a href="http://www.ebay.com.au/itm/200609595424" target="_blank">http://www.ebay.com.au/itm/200609595424</a></div><div> <a href="http://www.ebay.com.au/itm/271023896302" target="_blank">http://www.ebay.com.au/itm/271023896302</a></div>
<div><br></div><div><br clear="all">Paul<span class="HOEnZb"><font color="#888888"><br> <br>Paul Szymkowiak <br><div><a href="http://gplus.to/paulzee" target="_blank">gplus.to/paulzee</a></div><div><a href="http://twitter.com/paulzee" target="_blank">twitter.com/paulzee</a></div>
<div><a href="http://twitter.com/smartenergywins" target="_blank"></a><a href="http://twitter.com/hackmelbourne" target="_blank">twitter.com/hackmelbourne</a></div></font></span><div><div class="h5"><div><br></div>
<br><br><div class="gmail_quote">On 5 September 2012 09:07, cole santos <span dir="ltr"><<a href="mailto:cksantos85@gmail.com" target="_blank">cksantos85@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="gmail_quote">Why use a rotating array? Your plants will quickly outgrow such a small area. Make sure to use at least 3w leds or you wont get enough canopy penetration. Also you need UV for vitamin d production which cannot be produced by leds...for now. Check out plasma lighting, more efficient that LED. For hydroponics I am working on integrating organic nutrient sources such as fish effluent, biogas effluent, and human waste products. For space applications we need aeroponics to reduce total required water volume. To do aeroponics with organic nutrient sources you need an atomizer that doesn't clog. Looking into centrifugal atomizers atm. But in reality food production is a luxury when you can eat chlorella exclusively. Chlorella is easy to grow and is the most efficient method of co2 removal and o2 production by volume of area required. Hence my algae reactor project.</div>
<div><div>
<div class="gmail_quote"><br></div><div class="gmail_quote">On Wed, Sep 5, 2012 at 11:30 AM, Matt Joyce <span dir="ltr"><<a href="mailto:matt@nycresistor.com" target="_blank">matt@nycresistor.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Some folks at NYC Resistor were working on a growing apparatus using a<br>
rotating array of leds operating at different wavelengths.<br>
<br>
pic of it... behind and to the left ( looking at me ) of my glorious visage.<br>
<br>
<a href="http://www.flickr.com/photos/openfly/7558683614/" target="_blank">http://www.flickr.com/photos/openfly/7558683614/</a><br>
<br>
I'd love to see something like a git project setup for space based<br>
growing testing kits.<br>
<br>
Throw in some STL / code / eagle etc for some citizen science style<br>
testing.... aka repeatable experimentation. And we have some real<br>
live testing of procedures for open source scientific research into<br>
how to grow stuff in hazardous areas safely.<br>
<br>
I think that would be a great easy enough project to get into. And it<br>
would probably iron out some of the kinks in getting a bunch of people<br>
to be able to contribute to a much larger goal.<br>
<span><font color="#888888"><br>
-Matt<br>
</font></span><div><div><br>
<br>
On Tue, Sep 4, 2012 at 2:25 PM, cole santos <<a href="mailto:cksantos85@gmail.com" target="_blank">cksantos85@gmail.com</a>> wrote:<br>
> I have nothing running ATM but I did a lot of monoculture algae work when I<br>
> was in aquaculture program at UH<br>
><br>
> <a href="http://contrails.iit.edu/DigitalCollection/1962/AMRLTDR62-116article03.pdf" target="_blank">http://contrails.iit.edu/DigitalCollection/1962/AMRLTDR62-116article03.pdf</a><br>
><br>
> This is where I got my ideas.<br>
><br>
> My test reactor is going to be 18" x 24" x .2"<br>
><br>
> Man sized reactor will be 24" x 48" x .2-.09 with ~20 of them in parallel.<br>
><br>
> Algae will be extracted via this device.<br>
><br>
> <a href="http://www.parc.com/services/focus-area/clean-water/" target="_blank">http://www.parc.com/services/focus-area/clean-water/</a><br>
><br>
> and o2 / co2 / vox will be monitored by sensors on arduino control.<br>
><br>
> Short term plan is to replicate the boeing experiment and adapt for longer<br>
> term production<br>
><br>
> Longer term, utilizing human wastewater as a nutrient supply and electricity<br>
> source with waterwater fuel cells.<br>
><br>
> Each project is part of a larger plan for a compact biological closed cycle<br>
> habitat.<br>
><br>
><br>
><br>
><br>
><br>
> On Wed, Sep 5, 2012 at 11:10 AM, Máté Ravasz <<a href="mailto:ravaszmeister@gmail.com" target="_blank">ravaszmeister@gmail.com</a>><br>
> wrote:<br>
>><br>
>> Hi,<br>
>><br>
>> I've just started to build up my own algae cultures at home last month.<br>
>> Seeing your post on how far you've progressed already in this, I immediately<br>
>> became jealous. Would you by any chance have any publicly available data on<br>
>> how your setup runs? I am building a sunlight powered reactor at the moment,<br>
>> but I would be eager to read up on more advanced methods if possible.<br>
>><br>
>> Thanks for any info,<br>
>> Mat<br>
>><br>
>><br>
>> On 4 September 2012 22:48, cole santos <<a href="mailto:cksantos85@gmail.com" target="_blank">cksantos85@gmail.com</a>> wrote:<br>
>>><br>
>>> For big area lighting plasma is more efficient than leds.<br>
>>> <a href="http://www.plasma-i.com/index.html" target="_blank">http://www.plasma-i.com/index.html</a><br>
>>><br>
>>><br>
>>> On Wed, Sep 5, 2012 at 10:46 AM, cole santos <<a href="mailto:cksantos85@gmail.com" target="_blank">cksantos85@gmail.com</a>><br>
>>> wrote:<br>
>>>><br>
>>>> LED's are more expensive than florescents...and that is after order of<br>
>>>> magnitude reductions in cost over the last few years. I found some vendors<br>
>>>> in china for LED lights. Florescent technology requires bulb changes every 6<br>
>>>> months to a year, this makes it unworkable for space, but good for earth<br>
>>>> testing. LED research on optimal spectrum for algae growth is an open<br>
>>>> research field. Another problem is the design for my algae reactors needs<br>
>>>> lights that are 360, but leds are about 130 deg. a bi directional light<br>
>>>> would cost a lot more due to custom nature of such a light, another option<br>
>>>> is to just stack 2 lights back to back... but now you've doubled you costs<br>
>>>> and lighting is more that 50% of the total cost.<br>
>>>><br>
>>>> On Wed, Sep 5, 2012 at 10:25 AM, Jerry Isdale <<a href="mailto:isdale@gmail.com" target="_blank">isdale@gmail.com</a>> wrote:<br>
>>>>><br>
>>>>> Growing in space requires light. Space stations may be able to orient<br>
>>>>> themselves for full time growing but Colonies on moons, etc will need some<br>
>>>>> power source for when their rotation takes them into night (moon night = 2<br>
>>>>> weeks).<br>
>>>>><br>
>>>>> This article talks about using LEDs powered from a small nuclear power<br>
>>>>> source, similar to that powering the Curiosity Rover.<br>
>>>>><br>
>>>>><br>
>>>>> <a href="http://www.forbes.com/sites/brucedorminey/2012/08/31/space-farmers-leds-as-key-to-nasas-permanent-lunar-life-support/" target="_blank">http://www.forbes.com/sites/brucedorminey/2012/08/31/space-farmers-leds-as-key-to-nasas-permanent-lunar-life-support/</a><br>
>>>>><br>
>>>>> Jerry Isdale<br>
>>>>> <a href="mailto:isdale@gmail.com" target="_blank">isdale@gmail.com</a><br>
>>>>><br></div></div></blockquote></div></div></div></blockquote></div></div></div></div>
</blockquote></div><br></div>