For part of Cristley's email he wrote:
"One more advantage with the LED is that you can put one anywhere you can
drill a 3/16" hole, and even direct the light by angling the hole
properly. The standard 5mm LED is a push fit into a 3/16" hole. Then
you just need a small amount of room on the backside for hookup wires.
If the mounting surface is thick enough and you're careful, you can use
a #30 bit for the last 1/16" of the hole. Then you don't even need a
bevel. You wind up with a nearly hidden indicator or spot illuminator.
The push fit will keep it in place, but a dollup of shoo-goo is good for
peace-of-mind."
How true (and all the other advantages).....
The homebuilt (like a Europa or whatever) often leaves wee areas
which are dark and hard to enter. In my case I added a bunch of 3/16" holes
in the dark places, use tiny wires from them to the +&- sockets off used
9Vdc
batteries nearby (or easily accessed), and carry a fresh 9Vdc battery. One
battery serves many areas in the field, and lasts a goodly time, thanks to
LEDs.
Of course, one needs to plan the applicable resistances for each
application.
Saves on extra weight too.
Ferg
Europa A064
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