<html><head></head><body style="zoom: 0%;"><div dir="auto">This is a great idea. I want one for my kitchen.<br><br></div>
<div dir="auto">Ds18b20 for temperature. <br><br></div>
<div dir="auto"> Electrical conductivity could probably be done with two wires a measured distance apart. Don't keep power on the wires when not measuring as they will electroplate themselves on the "soil".<br><br></div>
<div dir="auto">Moisture, capacitive moisture sensor.<br></div>
<div dir="auto"><a href="https://a.aliexpress.com/_dWdgT70">https://a.aliexpress.com/_dWdgT70</a><br><br></div>
<div dir="auto">pH might have to surrender to checking this with test strips every so often. If you control the nutrients the pH should stay relatively stable. EC changes without moisture changes might also be a warning that the pH has changed. <br><br></div>
<div dir="auto"><!-- tmjah_g_1299s -->Deid VA7REI<!-- tmjah_g_1299e --></div>
<div class="gmail_quote" >On Jun 13, 2020, at 5:31 AM, <a href="mailto:codyg@lovi.ca" target="_blank">codyg@lovi.ca</a> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="blue">Here is a new inquiry from Steve White on our FB page. Anyone have a <br>response?<br><br>... Hi again, thanks for the link the website has some great info on it. <br>Especially the courses and info on self flying drones as im quite <br>interested in that topic. The project I'm working on now is a small self <br>contained multi-level vertical farm for restaurants, care homes, etc. <br>Having something that grows a small variety of herbs and vegetables <br>onsite would help users reduce rising food costs, reduce nutrient loss <br>though transport and storage times, and the environment as its grown <br>onsite so theres no shipping or packaging. The nutrient dosing, <br>lighting, etc, will be controlled by a couple Arduino's or Raspberry <br>Pi's. It's been going well so far, but I've been having some issues <br>trying to find a multimodal sensor for within the rock wool growing <br>medium that will measure the pH, EC, and temperature and send that data <br>back to the computers so they can make adjustments. The few I found <br>online come with unnecessary 'value-added extras' and fancy casings all <br>of which are extremely expensive and you can't just get the tiny sensor <br>portion. The device can't cost more than the value of the produce it <br>creates right, so keeping quality high while costs down has been a <br>challenge, and there needs to be 8 of these multimodal sensors per unit.<br>So I don't know if you know anyone that's into automated vertical <br>farming that might know something about collecting data from the plants. <br>Or even someone who knows about sensor fabrication as that might be the <br>route I have to go down. I'd be happy to give you any more information <br>if you need it.<br><br>Cody<br></pre></blockquote></div></body></html>