Karl Lattimer wrote:
After sitting, almost transfixed on my mac's sleep light as it slowly rises
and falls a little college electronics returned to me.
^^ HD LED
|---|>|----+
HD+ o--[ R ]--+ c |-----+
|---|(-----+ |
HD- o--------------------------+
Now I'm pretty sure this is right, off the top of my head, and would relieve
the headache a hard disk light in a freevo can cause.
The only problem is I can't rightly remember the method of determining the
values of R and c (my notes are long gone), I'll keep looking, and update as
necessary and of course post a wiki. The thing is, what would be a good
timing? Should we try and time it so our breathing comes in time with it as
we watch a movie?
Regards
Karl,
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Sorry for the reply again but i have a better circuit. This provides a
slow fade of the led during the off period of the hdd light The large C
the slower the fade i recomend between 220 - 2200 uF the circuit is
attached
![circuit]()
this works by when the hdd led is high (5v) then the capacitor
charges. and aslo suplys the led. when the hdd led is off the
capacitor discharges through the resistor and led.the 5v supply in the
circuit is the hdd con on the mobo
please note that with either circuit you could not get the led to flash
and fade at a sett rate ie breathing
Chris Ellis
|
<<inline: ledfade.jpg>>
<<inline: ledfade.jpg>>
