I like your single wheel design. <div><br></div><div>It will put a spin on it which might add some value.</div><div><br></div><div>It will be about 1/2 the speed as a double wheel for a given rpm (something like that), but I don't think we need a lot of range for this sort of thing. This is a living room wiener dog toy. I guess if we permit it to spin very fast so they can bring the machine outside.</div>
<div><br></div><div>I'll start with the wiener dog version though. <br><div><div><div><br></div><div>It doesn't need t be accurate of course. So it might not even need a tube to guide the ball. Perhaps I'll just have the spinning wheel drop onto the ball. </div>
<div><br></div><div>I guess we need an arduino, a dc motor driver and one servo control to release the wheel. Perhaps 2nd motor drive to lift the wheel. </div><div><br></div><div>This would then work for all ball sizes. </div>
<div><br></div><div><br></div><div><br></div><div><br></div><div><br></div></div></div><br>
<br><br><div class="gmail_quote">On Mon, Nov 7, 2011 at 8:19 AM, Jean-Marc LeBlanc <span dir="ltr"><<a href="mailto:jeanmarc.leblanc@gmail.com">jeanmarc.leblanc@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
it is much like this one that you posted (the 4rth)<br>
<a href="http://www.youtube.com/watch?v=7PDGs45vjQ4&feature=player_embedded" target="_blank">http://www.youtube.com/watch?v=7PDGs45vjQ4&feature=player_embedded</a><br>
<br>
except mine only had 1 wheel<br>
<br>
here is a litle but how I had mine set up maybe you could have some<br>
thing that hold the ball in with a sensor to detect the dog is not in<br>
front of it<br>
<br>
Jean-Marc Le Blanc<br>
---<br>
<br>
"Do you pine for the nice days of Minix-1.1, when men were men and<br>
wrote their own device drivers?" Linus Torvalds<br>
<br>
<br>
<br>
<br>
On Mon, Nov 7, 2011 at 8:08 AM, Darcy Whyte <<a href="mailto:darcy@siteware.com">darcy@siteware.com</a>> wrote:<br>
><br>
> That might be cool for having a random direction. Or if the ball is gathered<br>
> by a collector shaped like a blower housing I suppose it would be<br>
> consistent.<br>
> I saw your note on the spinning pinch wheels too. That sounds like the<br>
> simplest. The ball gets tossed in the hopper by the dog, then it falls onto<br>
> spot near the spinning wheels. The wheels spool up and a servo gives the<br>
> ball a little push into the wheels. I realize we could run the wheels but I<br>
> thought it would be cool since the sound and delay would cause more<br>
> anticipation. And there might be some safety possibilities with controlling<br>
> when the launch takes place.<br>
><br>
><br>
><br>
><br>
><br>
><br>
> On Mon, Nov 7, 2011 at 7:59 AM, Jean-Marc LeBlanc<br>
> <<a href="mailto:jeanmarc.leblanc@gmail.com">jeanmarc.leblanc@gmail.com</a>> wrote:<br>
>><br>
>> I made a base ball lauger with a rotating wheel. the wheel you<br>
>> squeeze a ball threw an opening just slightly smaller than the ball<br>
>> and then out a tube<br>
>><br>
>> Jean-Marc Le Blanc<br>
>> ---<br>
>><br>
>> "Do you pine for the nice days of Minix-1.1, when men were men and<br>
>> wrote their own device drivers?" Linus Torvalds<br>
>><br>
>><br>
>><br>
>><br>
>> On Mon, Nov 7, 2011 at 7:52 AM, Darcy Whyte <<a href="mailto:darcy@siteware.com">darcy@siteware.com</a>> wrote:<br>
>> ><br>
>> > I want to make a ball launcher for a dog. I think the electrical side is<br>
>> > pretty easy but what about the mechanical? Here are a few ideas.<br>
>> > <a href="http://mambohead.com/2011/11/dogomation/" target="_blank">http://mambohead.com/2011/11/dogomation/</a><br>
>> ><br>
>> > _______________________________________________<br>
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>> > <a href="http://artengine.ca/mailman/listinfo/lab" target="_blank">http://artengine.ca/mailman/listinfo/lab</a><br>
>> ><br>
>> ><br>
><br>
><br>
</blockquote></div><br></div>