"@Jack Crossfire:The power rating on PSUs is more complex than that. First, the 1000W rating is the sum of the maximum power of all of the separate voltage rails added up. Second, 1000W PSUs are notorious for being unable to meet their specs, unless…"
"I tested this yesterday, and noticed that sometimes that on powerup, my ESCs were beeping, and none of the status LEDs on the APM 2.0 are on. Multiple attempts at power cycling required to fix this--no idea why. Anyone else see this?
"You're right about those LEDs--they have resistors in series, and are wasting most of the energy. As such, using an external buck regulator isn't a good option--it will require >12 V in order to put 50mA through the LED + resistor.