Originally Posted by
urnotevenwrg2
I did this with a modified circuit board out of a servo. I think I could mix the steering and throttle into the channel where I have my switch to make working turn signals/brake lights. I'm not even using this for led's, but for something else where it just needs to be on/off.
As useful as the servo board is for various projects, they're generally limited to whatever voltage the servo controller can withstand, and also limited to the ESC's BEC voltage unless you also add an external BEC, but even those usually top out at 7-8 volts. Although the LED light bar I used on my Bomber has a boost/buck converter in it to allow it to work on more or less any input voltage, a lot of light bars, including my DIY light bar, needs 12V to work. That's where the relay-style switch comes in handy.
Originally Posted by
billdelong
Was it even necessary to use the channel mixing on the controller for the brake lights? You could have used the y-splitter for the brake lights just like you did for the forward lights as long as you reversed the polarity of the LED.