hi! so i ws fiddling around with some broken servo's, and i discovered a way to make them as switches for led arrays!
it basically involves giving a fixed resistance from the potentiometer (pot) and replacing the motor terminals with a LED/ LED's
1. Dismantle your servo. carefully take apart the gears, the motor and board, and the pot
2. de-solder the motor, and solder the led into it's place. be sure to not damage the wire which goes to the Rx
3. now the tricky part. set up a channel on your Tx , and flip the switch on and off. check how the led is lighting. rotate the pot, and keep checking. The LED will glow brighter as you take the pot to the edges, and will dim as the pot is centered. keep rotating it till you find the sweet spot, ie. the LED is on with one switch position, and off after flipping the switch on the Tx.
4. another option is to remove the pot, and put 2 resistor aver the 3 wires, which have the same resistance as the pot. i didn't use this as i didn't have any resistors left, and i was in a hurry
5. put some CA into the pot, to seal it's position. TRIPLE CHECK that it's in the correct position.
6. now you can cut off the shaft on the pot, and put the whole thing in some heatshrink tubing...if you want, you can put more LED's in series to the first one...
ENJOY your lighting sytem!
hope this helps,
regards
aniket
PS: if any one has a suggestion, or can explain it better, they are welcome to do so... also, my camera isn't working, so pictures are welcome..