Beier sound controllerand light setup

[gismow]

The light is cabled like this:

Battery + -> resistor -> led + (long pin)
Led - (short pin) -> output pin at the USM-RC-2

You can also put the resistor behind the LED.

For 7.4V circuits I use 220Ohm resistors.

[DrDiff]

I run 3S lipo Packs (I use them in my crawlers, Quad Copters, Airplanes and RC Cars.

That would give 11.2 volts fully charged and cut off at 9.6 volts.

What resistor would you suggest?

Originally Posted by gismow

The light is cabled like this:

Battery + -> resistor -> led + (long pin)
Led - (short pin) -> output pin at the USM-RC-2

You can also put the resistor behind the LED.

For 7.4V circuits I use 220Ohm resistors.