So I finally got my walkera female cables to make my battery y-connector so I could run FPV setup and FC off the same battery, when catastrophy hits. It turns out the female connecters came wired reverse polarity for some reason, and being the idiot I am, I forgot to check for this… luckily, my pololu voltage regulator acted like a $6 fuse, and the only thing that got damaged was it.
Moral of the story:
Check polarity on the part its connected to, check polarity on the wires, check polarity on the connector, and then do that 2 more times…
(also the reason this is in crash clinic is because it says that it can be “if you released the magic smoke” also)