[Noisebridge-discuss] Technical question: Directionally sensitive photosensors

Norman pryankster at gmail.com
Mon Jun 10 23:51:07 UTC 2013

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.


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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