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	<id>https://pauljmac.com/projects/index.php?action=history&amp;feed=atom&amp;title=Tennis_Ball_Cannon</id>
	<title>Tennis Ball Cannon - Revision history</title>
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	<updated>2026-04-21T14:19:24Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://pauljmac.com/projects/index.php?title=Tennis_Ball_Cannon&amp;diff=10&amp;oldid=prev</id>
		<title>Paul: Created page with &quot;This is a fully automatic tennis ball cannon. This was a project I did some years ago for no real reason. I originally make my own PCB to control the cannon. My day job approached me a month ago and asked If I would present something to a local elementary school for the Great American Teach-in Day. I converted this machine to be controlled by a Allen-Bradley CompactLogix PLC for that demonstration. This is that program. It makes use of the new user defined instructions a...&quot;</title>
		<link rel="alternate" type="text/html" href="https://pauljmac.com/projects/index.php?title=Tennis_Ball_Cannon&amp;diff=10&amp;oldid=prev"/>
		<updated>2024-12-08T16:07:25Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;This is a fully automatic tennis ball cannon. This was a project I did some years ago for no real reason. I originally make my own PCB to control the cannon. My day job approached me a month ago and asked If I would present something to a local elementary school for the Great American Teach-in Day. I converted this machine to be controlled by a Allen-Bradley CompactLogix PLC for that demonstration. This is that program. It makes use of the new user defined instructions a...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;This is a fully automatic tennis ball cannon. This was a project I did some years ago for no real reason. I originally make my own PCB to control the cannon. My day job approached me a month ago and asked If I would present something to a local elementary school for the Great American Teach-in Day. I converted this machine to be controlled by a Allen-Bradley CompactLogix PLC for that demonstration. This is that program. It makes use of the new user defined instructions and block diagram features available in RSLogix5000. The kids very much enjoyed my presentation that day.&lt;br /&gt;
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[http://pauljmac.com/projects/images/a/a8/Fire_Control.pdf Fire Control]&lt;br /&gt;
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[https://www.youtube.com/watch?v=sJZ1o8XpaZc Youtube Video 1]&lt;br /&gt;
[https://www.youtube.com/watch?v=aIox-FH2yVY Youtube Video 2]&lt;br /&gt;
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[[Image:1463314 10153495733960587 1270514420 n.jpg]]&lt;br /&gt;
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[[Image:1455046 10153495733975587 708704026 n.jpg]]&lt;/div&gt;</summary>
		<author><name>Paul</name></author>
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