[sdiy] super-nice LED interface ..

[Jay Vaughan]

>The LEDs are being pulsed - sometimes on, sometimes off. When they're
>off, they can pick up the reflections from adjacent LEDs.
>

ah hah .. thats very interesting.

>At least that's how I'd do it. I suppose if you pulsed it fast enough,
>you could pick up its own reflection (I don't know physics to that level
>- is there enough time to do it?)

.. and since the pulse-length determines the LED intensity, does it 
also follow that 'dimmer LEDs' (pulsing less frequently) will scan 
less frequently, leading to the obvious next step that with such a 
setup, you would have to deal with varying scan rates .. ?

-- 

;

Jay Vaughan