On 15/11/2012 12:52, Ralph Aichinger wrote:
David Taylor <[email protected]> wrote:
[]
http://www.maplin.co.uk/eddystone-die-cast-aluminium-shallow-lid-thin-wall-43713
That looks very cool, I am a bit scared of making holes in
metal cases, though. Even with plastic this can be complicated
enough, if you don't have any special tools.
I have just a hand drill and some files - nothing "fancy". I find
plastic worse than metal owing to its tendency to crack. Aluminium is
rather nice to work.
I also have a second sure board, inside an anti-static bag, inside a
thick black bag (to stop the blue LED's light!). Works fine.
Actually I think I will connect another LED and use a non-transparent
case, because actually I do want the 1-second blink. But not so
bright that it is distracting at night. I suppose connecting
another "normal" red LED to the PPS output cant' be a problem.
/ralph
Yes, I wanted the blink as well (and the red and yellow have also proved
useful in diagnosing problems). I used a small "light pipe" to bring
out the LED emissions to the top of the case. I centred the pipe (just
some thick heat-shrink tubing) not over the blue LED, but its light gets
through well enough! I expect the PPS output could source enough
current for a low-power LED, but if I were doing that I would use a
similar LED and series current-limit resistor as they have for driving
the blue LED.
--
Cheers,
David
Web: http://www.satsignal.eu
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