Originally Posted by BobTopofTheWorld
I dont know if anyone thought of this... Them 'automotive accesories' tire-stem flashing LED lights are perfect for heli running lights. They have a flasher circuit built right on a mini circuit board that doubles for the LED mount. I took a 1,000 ohm 1/2 watt and put it in series with the - side, ran the wire to the pcb and soldered the wires direct to the battery bus. These weigh nothing, are super bright, and the drain is in the .001 amp (per light) range. I intend on getting several more (I had 1 that I found) and constructing a harness style setup that sports 4 lights (2 on each side).
FYI the 1k 1/2 watt resistor will easily power several of these
I'd love to adapt the centrifugal switch idea into main rotor lights, use a Li 3.7volt 'button' battery...
e-bay has these: http://www.ebay.com/sch/i.html?_nkw=valve+stem+lights
That sounds interesting. If I understand, the leds are powered directly by the battery with the resistor between the battery and the led?