[Noisebridge-discuss] Technical question: Directionally sensitive photosensors

[Mike Schachter]

Oh ok! Well I'd be happy to help Chris with code to do
directional-selection given data from an array of photo-sensitive inputs if
that would be useful.

 mike



On Mon, Jun 10, 2013 at 5:20 PM, Norman <pryankster at gmail.com> wrote:

>  Mike, that is exactly how a phased array works.
>
> Norman
>
>
> On 6/10/2013 5:07 PM, Mike Schachter wrote:
>
> Can you just get an array of non-directional photosensors and do the
> direction-selectivity computationally on an arduino or something?
>
>  mike
>
>
>
>  On Mon, Jun 10, 2013 at 4:51 PM, Norman <pryankster at gmail.com> wrote:
>
>> 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.
>>
>> Norman
>>
>>
>> On 6/10/2013 4:22 PM, Christoph Maier wrote:
>>
>>> On Mon, Jun 10, 2013 at 2:54 PM,  <pdbogen at cernu.us> wrote:
>>>
>>>> On Mon, Jun 10, 2013 at 02:51:48PM -0700, Christoph Maier wrote:
>>>>
>>>>> Can anyone on this list give me recommendations (nudge,nugde, Mitch
>>>>> Altman) how to build cheap photosensors (wink,wink, Jonathan Foote)
>>>>> that are highly directionally sensitive?
>>>>>
>>>> What sort of sensing do you need? A photoresistor at the end of a bit of
>>>> opaque tubing is highly directional..
>>>>
>>> Something small and cheap ... Photoresistors and opaque tubing may
>>> already be bulky if placed on a nickel-sized PCB ...
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