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Mike, that is exactly how a phased array works.<br>
<br>
Norman<br>
<br>
<div class="moz-cite-prefix">On 6/10/2013 5:07 PM, Mike Schachter
wrote:<br>
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<blockquote
cite="mid:CAGpv09UHw91CBbUJ9--iwtmCinVUVWoDCiqZKi=GszYE31UF8g@mail.gmail.com"
type="cite">
<div dir="ltr">Can you just get an array of non-directional
photosensors and do the direction-selectivity computationally on
an arduino or something?<br>
<br>
mike<br>
<br>
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<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">
On Mon, Jun 10, 2013 at 4:51 PM, Norman <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:pryankster@gmail.com"
target="_blank">pryankster@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
The only thing I can think of that would be a phased array
and would no doubt be very expensive. It might be possible
with lower cost components if you are thinking of single
axis and can get the timing done accurately enough.<span
class="HOEnZb"><font color="#888888"><br>
<br>
Norman</font></span>
<div class="HOEnZb">
<div class="h5"><br>
<br>
On 6/10/2013 4:22 PM, Christoph Maier wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
On Mon, Jun 10, 2013 at 2:54 PM, <<a
moz-do-not-send="true"
href="mailto:pdbogen@cernu.us" target="_blank">pdbogen@cernu.us</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
On Mon, Jun 10, 2013 at 02:51:48PM -0700, Christoph
Maier wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Can anyone on this list give me recommendations
(nudge,nugde, Mitch<br>
Altman) how to build cheap photosensors
(wink,wink, Jonathan Foote)<br>
that are highly directionally sensitive?<br>
</blockquote>
What sort of sensing do you need? A photoresistor at
the end of a bit of<br>
opaque tubing is highly directional..<br>
</blockquote>
Something small and cheap ... Photoresistors and
opaque tubing may<br>
already be bulky if placed on a nickel-sized PCB ...<br>
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