<?xml-stylesheet type="text/xsl" href="https://community.element14.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Upcycle It - Washing Machine Hydroponic Grower - #7 Drum RPM Calculation</title><link>/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---7-drum-rpm-calculation</link><description>To start programming the stepper motor control, I did some tests having the stepper motor turning the drum at different pulse frequencies. Checking some other rotary growing systems I found that it normally takes 30 to 45 minutes to give a compl...</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: Upcycle It - Washing Machine Hydroponic Grower - #7 Drum RPM Calculation</title><link>https://community.element14.com/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---7-drum-rpm-calculation</link><pubDate>Wed, 21 Jun 2017 03:56:31 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:80a6c865-98d5-4262-b890-a16c5da8034f</guid><dc:creator>nandohila</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;I ended up using RPH (Rotations per Hour) this way I will be dealing with numbers from 1 till 60 RPH. The first test will be running at 3 RPH that is about the rate the commercial units turn. After having the first harvest than we go wild. &lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=3073&amp;AppID=147&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>RE: Upcycle It - Washing Machine Hydroponic Grower - #7 Drum RPM Calculation</title><link>https://community.element14.com/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---7-drum-rpm-calculation</link><pubDate>Mon, 29 May 2017 10:49:40 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:80a6c865-98d5-4262-b890-a16c5da8034f</guid><dc:creator>jc2048</dc:creator><slash:comments>1</slash:comments><description>&lt;p&gt;I&amp;#39;d go for time-per-rotation myself. That seems more natural to me than trying to puzzle out what 0.0333 RPM might mean.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Did you consider move-and-pause, move-and-pause, as an alternative to continuous movement? At the faster rates of rotation the plants aren&amp;#39;t going to be in the nutrient bath at the bottom for very long. There might be a case for quickly rotating the plant round to sit in the bath, leave it to sit there for a moment or two, then bring the next one round.&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=3073&amp;AppID=147&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>RE: Upcycle It - Washing Machine Hydroponic Grower - #7 Drum RPM Calculation</title><link>https://community.element14.com/challenges-projects/design-challenges/upcycleit/b/blog/posts/upcycle-it---washing-machine-hydroponic-grower---7-drum-rpm-calculation</link><pubDate>Wed, 24 May 2017 16:55:10 GMT</pubDate><guid isPermaLink="false">93d5dcb4-84c2-446f-b2cb-99731719e767:80a6c865-98d5-4262-b890-a16c5da8034f</guid><dc:creator>DAB</dc:creator><slash:comments>1</slash:comments><description>&lt;p&gt;Nice update.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Now that you know the range, you can experiment with which cycle times optimizes the growth for which plants.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;This will be a very cool long tern project as you plant, grow and document your results.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;Hopefully you will continue to blog your results.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;DAB&lt;/p&gt;&lt;img src="https://community.element14.com/aggbug?PostID=3073&amp;AppID=147&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item></channel></rss>