[ntp:questions] Enclosure for Sure Electronics GPS board
david-taylor at blueyonder.co.uk.invalid
Thu Nov 15 14:58:11 UTC 2012
On 15/11/2012 12:52, Ralph Aichinger wrote:
> David Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
> 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.
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.
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