Hi again,<br><br>So after some more research I&#39;ve come to the conclusion that the ultrasonics aren&#39;t going to do what I would like - not a wide enough beam and unnecessary accuracy.<br><br>Perhaps if I say what I would like &#39;something&#39; to do, someone may say &quot;oh, you want one, two, n of <i>these</i>&quot;.<br>
<br>I have a digital wind chime thingy that now works ok on the RPi.  What I would like is to be able to put it outdoors with <i>something</i> that will <i>see</i> when large objects, like people, are coming towards and moving away from it and then I can make use of that data to send force in pmpd to the chimes and then the chimes can klang into each other.<br>
<br>Been looking at the kinects but it seems I&#39;ll need GEM to be able to explore Matthias&#39;s very excellent looking freenect lib which is a no-no on the RPi currently.<br><br>My friend and I have rounded up a nice solar panel, we&#39;ve got some old broken soundstick speakers that we&#39;ve hacked into and a weather-proof box plus a pole to hang it all on.  Should be a nice little project when it&#39;s done but a we&#39;re bit stuck on this problem at the moment...<br>
<br>Any suggestions people?<br><br>Cheers,<br><br>Julian<br>