[mythtv-users] Where to buy CommandIR ?
beww at beww.org
Mon Aug 2 21:45:23 UTC 2010
On Monday, August 02, 2010 03:32:08 pm William Powers wrote:
> On Mon, Aug 2, 2010 at 3:55 PM, Gert van der Knokke <gertk at xs4all.nl> wrote:
> > Chris Hoff schreef:
> > If these emitters are simple IR LED's why not attenuate the current
> > through them by means of a simple resistor. Just keep increasing the
> > value up to the point the receiver stops responding then use a resistor
> > value slightly less than this. You could even use a adjustable resistor
> > in the range from 1 to 10 k or so.
> I addition to many methods of optical attenuation (some with at least
> partial success), I also tried electrical attenuation with six series
> resistance values: 100, 1k, 2.2k, 4.7k, 10k and 47k ohms. None of
> these result in any improvement.
It would depend a lot on the nature of the power supply, whether it's constant voltage (regulated), constant current or
just a typical crappy voltage source, with poor regulation.
But I suspect you will have the best luck with optical methods.
More information about the mythtv-users