"cavelamb" wrote in message
...
Since it is for a flying machine, how about a little redundancy?

I'd be tempted to toss in a switch that connects +14V-Big resistor-All the
LEDs (with their individual current-limiting resistors) -- so if the 7805 or
555 fail, you can still have full brightness backlights.

But perhaps just having a flashlight around is just as good, if there's a
mount such that it can be pointed at the display. :-)