[Noisebridge-discuss] Technical question: Directionally sensitive photosensors

J.C. r33lmm at gmail.com
Tue Jun 11 00:15:50 UTC 2013


I've seen a few projects like this for sun tracking just using some LEDs

On Monday, June 10, 2013, Christoph Maier wrote:

> Has anyone tried a LED with lens as sensor?
>
> On Jun 10, 2013 4:51 PM, "Norman" <pryankster at gmail.com<javascript:_e({}, 'cvml', '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 <javascript:_e({},
>>> 'cvml', '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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>

-- 
ThanX,
;+)

https://www.noisebridge.net/wiki/Fort
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