Connecting a wind sensor and Arduino to control a video projection - NYCResistor:Microcontrollers

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Message from discussion Connecting a wind sensor and Arduino to control a video projection
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Date: Tue, 13 Dec 2011 14:10:36 -0500
Message-ID: <CALjyAq+as9Y0pm5Oy7Bpw9JkQnWEOuOQ6p8PS-44NhpyVMR...@mail.gmail.com>
Subject: Re: [NYCR:Microcontrollers] Connecting a wind sensor and Arduino to
 control a video projection
From: Alexandra Gelis <i...@alexandragelis.com>
To: nycresistormicrocontrollers@googlegroups.com
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Thanks a lot!! I will try with the three options that you guys send me,
thanks a lot!!!
As I will having  questions or problems I will formulating them to you, thank
you very much again.
You are very kind geniuses!!
Alexandra

On Tue, Dec 13, 2011 at 1:42 PM, Eric Skiff <m...@ericskiff.com> wrote:

> Agreed - you'd probably find that any HVAC system in the space would
> create more noise in the wind data than people moving through the space.
>
> Personally I would probably try to do this with a webcam and optical flow
> analysis using OpenCV
>
> You can see one example of this here:
> http://youtu.be/QX5TlIHXhd0
>
> There are many other things you can do to simulate fluid/gas movement in a
> space once you have information about which way objects are moving in a
> field of view.
> If you take a look at some of Grant Kot's physics simulation videos here:
> http://www.youtube.com/user/kotsoft?blend=8&ob=5 (he was our intern here
> at QLabs!) you'll get a sense for what you can do with optical flow data.
>
> -E
>
>
> On Tue, Dec 13, 2011 at 1:03 PM, Paul Strohmeier <
> paul.strohme...@gmail.com> wrote:
>
>> you could try using piezzo electric sensors. they would trigger the
>> projections based on the vibrations created by the peoples movements.
>>
>> i think using a wind sensor will probbly be a very complex undertakig in
>> order to get useful readings from it.
>>
>> p.
>>
>> - sent from android device -
>> On Dec 13, 2011 6:02 AM, "Alexandra Gelis" <i...@alexandragelis.com>
>> wrote:
>>
>>> hello!
>>> I am having a problem, see if some of you guys have any idea...
>>> I need to trigger videos projected by tree projectors.
>>> The videos should be trigger by the subtle air or wind produced by the
>>> walking of the viewers on a room. The viewer will  be surrounding by the 3
>>> video projections.
>>> My first idea was to use video cameras connected with MAXmsp and create
>>> a grid to mark and read the movement of the people on the space.
>>> But, it will be better if  is possible to measured the air produce by
>>> their movement, because conceptually works better with the video
>>> installation that i working on it.
>>> Any idea to how to resolve this?
>>> I was wondering if there is any kind of wind sensor that can be
>>> connected in to Arduino...
>>> IDEAS?
>>> I am really appreciated your help!
>>>
>>> Thanks
>>> Alexandra
>>>
>>> --
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>>
>
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Thanks a lot!! I will try with the three options that you guys send me, tha=
nks a lot!!! <br>As I will having<span id=3D"result_box" class=3D"" lang=3D=
"en"><span class=3D"hps"></span>=A0<span class=3D"hps"></span> <span class=
=3D"hps">questions</span><span> or problems I will formulating them to you,=
</span> <span class=3D"hps">thank you very much</span> <span class=3D"hps">=
again.</span> <br>
<span class=3D"hps">You</span> <span class=3D"hps">are</span> <span class=
=3D"hps">very kind</span> <span class=3D"hps">geniuses</span></span>!!<br>A=
lexandra<br><br><div class=3D"gmail_quote">On Tue, Dec 13, 2011 at 1:42 PM,=
 Eric Skiff <span dir=3D"ltr">&lt;<a href=3D"mailto:m...@ericskiff.com">me@er=
icskiff.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Agreed - you&#39;d probably find that any HV=
AC system in the space would create more noise in the wind data than people=
 moving through the space.<div>
<br></div><div>Personally I would probably try to do this with a webcam and=
 optical flow analysis using OpenCV</div>

<div><br></div><div>You can see one example of this here:</div><div><a href=
=3D"http://youtu.be/QX5TlIHXhd0" target=3D"_blank">http://youtu.be/QX5TlIHX=
hd0</a></div><div><br></div><div>There are many other things you can do to =
simulate fluid/gas movement in a space once you have information about whic=
h way objects are moving in a field of view.</div>


<div>If you take a look at some of Grant Kot&#39;s physics simulation video=
s here:=A0<a href=3D"http://www.youtube.com/user/kotsoft?blend=3D8&amp;ob=
=3D5" target=3D"_blank">http://www.youtube.com/user/kotsoft?blend=3D8&amp;o=
b=3D5</a> (he was our intern here at QLabs!) you&#39;ll get a sense for wha=
t you can do with optical flow data.</div>
<span class=3D"HOEnZb"><font color=3D"#888888">

<div><br></div></font></span><div><span class=3D"HOEnZb"><font color=3D"#88=
8888">-E=A0</font></span><div><div class=3D"h5"><br><br><div class=3D"gmail=
_quote">On Tue, Dec 13, 2011 at 1:03 PM, Paul Strohmeier <span dir=3D"ltr">=
&lt;<a href=3D"mailto:paul.strohme...@gmail.com" target=3D"_blank">paul.str=
ohme...@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">

<p>you could try using piezzo electric sensors. they would trigger the proj=
ections based on the vibrations created by the peoples movements.</p>
<p>i think using a wind sensor will probbly be a very complex undertakig in=
 order to get useful readings from it.</p>
<p>p.</p>
<p>- sent from android device -</p><div><div></div><div>
<div class=3D"gmail_quote">On Dec 13, 2011 6:02 AM, &quot;Alexandra Gelis&q=
uot; &lt;<a href=3D"mailto:i...@alexandragelis.com" target=3D"_blank">info@=
alexandragelis.com</a>&gt; wrote:<br type=3D"attribution"><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">



hello!<br>I am having a problem, see if some of you guys have any idea...<b=
r>I need to trigger videos projected by tree projectors. <br>The videos sho=
uld be trigger by the subtle air or wind produced by the walking of the vie=
wers on a room. The viewer will=A0 be surrounding by the 3 video projection=
s.<br>




My first idea was to use video cameras connected with MAXmsp and create a g=
rid to mark and read the movement of the people on the space.<br>But, it wi=
ll be better if=A0 is possible to <span lang=3D"en"><span>measured</span></=
span> the air produce by their movement, because conceptually works better =
with the video installation that i working on it.<br>




Any idea to how to resolve this? =A0 <br>I was wondering if there is any ki=
nd of wind sensor that can be connected in to Arduino...<br>IDEAS?<br>I am =
really appreciated your help!<br><br>Thanks<br>Alexandra<br>

<p></p>

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</blockquote></div>

<p></p>

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</div></div></blockquote></div><br></div></div></div><div class=3D"HOEnZb">=
<div class=3D"h5">

<p></p>

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</div></div></blockquote></div><br>

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