FlyDragon 150A ESC 5-12S HV OPTO for RC Hobby Model Aircraft Helicopter Electronic Speed controll for 105 / 120mm JP EDF Motor

Yet now tested with DIY water chiller compressor on low current 4A, using ESP32 as controller.

So they charge you another $50 or whatever, for an internal BEC... which literally equates to a 3rd 26 GA wire being soldered to the 5v output of the exact same board. I'm not an electrical wizard, but I've built 6 quad drones from scratch, following step by step directions. I was having a hell of a time working on this, my first stand-alone ESC, so I said F it and cracked'er open. If anyone with actual electrical knowledge/intelligence can elaborate on what they see here, it would be greatly appreciated/helpful to both others and myself! DO NOT reverse throttle on signal wires!... that's probably elementary for most folks, but I had to find out the hard way = making a smoky sparkler. TBD.

The esc works but difficult to use and not much instruction on calibration.

Works great with JP 105 MM Fan. Already has perimeters set for JP unit.

When I finally decided having 150 amp worth of control was way cool was when I decided I really need to run a 10s setup. This ESC is large and solid, if that is any metric.