<p dir="ltr">The resistance idea is interesting. If the two probes are far from each other, then it would measure across the medium rather than just a single spot in the soil... But I have no idea how resistance relates to moisture or mineral content in soil or in the roots. Let me know if you guys start a blog or something tracking its progress. I'm curious about it now.</p>
<p dir="ltr">--<br>
Sincerely,<br>
Jaime Yu<br>
B.Eng in Computer Engineering, System Hardware<br>
Kernel Software Engineer at Juniper Networks</p>
<p dir="ltr">$CV = "<a href="http://cv.jaimeyu.com">http://cv.jaimeyu.com</a>"<br>
$Blog = "<a href="http://ask.jaimeyu.com">http://ask.jaimeyu.com</a>"<br>
$travvik ="<a href="http://ottawa.travvik.com">http://ottawa.travvik.com</a>"<br>
$Project = "<a href="http://www.capstone490.com">http://www.capstone490.com</a>"<br>
$Linkedin = <a href="https://www.linkedin.com/in/jaimeyu">https://www.linkedin.com/in/jaimeyu</a><br>
$GitHub = <a href="https://github.com/jaimeyu">https://github.com/jaimeyu</a></p>
<p dir="ltr"> </p>
<div class="gmail_quote">On Dec 11, 2014 1:37 PM, "Darcy Whyte" <<a href="mailto:darcy@inventorartist.com">darcy@inventorartist.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I had started a project thinking I'd make a hydroponic system. <a href="http://inventorartist.com/cilantro-matic/" target="_blank">http://inventorartist.com/cilantro-matic/</a><div><br></div><div>I wound up making a vermicompost so I can make soil instead. <a href="http://inventorartist.com/vermicomposting/" target="_blank">http://inventorartist.com/vermicomposting/</a></div><div><br></div><div>That seems to make more sense since we're just turning table scraps to soil then back to food. The vermi also eats newsprint, junk mail and all sorts of other stuff so it's really cool.</div><div><br></div><div>Kevin from the Arduino meetups has been talking up the idea of making an automatic watering system for plants.</div><div><br></div><div>He gave me a senor to stick in the soil (to measure resistance) and I was thinking of getting going on that project.</div><div><br></div><div>For figuring out when to water I was thinking that just a timer might be enough. I'm not convinced we can know enough about the soil by measuring resistance in one spot.</div><div><br></div><div>What about weight? Some peiso elecrics can detect pressure. When the plant receives water you can see it taper off in the weight so we know what's going on. And it's all relative measurement so the weight of the plant and other stuff isn't needed.</div><div><br></div><div>Any thoughts on that?</div><div><br></div><div>I just got some mint seeds in the mail so I was starting to think about this.</div><div><br></div><div>Also, my hot chili peppers are giving seeds now. If anybody wants any seeds let me know. I've already germinated a few and they seem to come up pretty fast. These peppers grow fast and are very robust. They also taste great! There's nothing like always having fresh hot chili peppers on hand.</div><div><br></div><div>I've not figured out how to successfully pollinate and get the seeds from the basil yet. I think I have to set plants aside for that and let them blossom (snipping blossoms on the ones that get harvested)...</div><div><br></div><div><br clear="all"><div><div><div dir="ltr"><br><div><div><br></div><div><div>--</div><div>Darcy Whyte</div><div><br></div><div>Art+ <a href="http://inventorartist.com/" target="_blank">inventorArtist.com</a> | Aviation <a href="http://rubber-power.com/" target="_blank">rubber-power.com</a></div><div>Contact: <a href="mailto:darcy@inventorArtist.com" target="_blank">darcy@inventorArtist.com</a> | <a href="tel:613-563-3634" value="+16135633634" target="_blank">613-563-3634</a> by appointment (no text)</div></div></div><div><br></div></div></div></div>
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