If you're building a quadcopter at home, the ESC is one of the most important parts in the build. The SimonK 30A ESC is popular with drone hobbyists for its fast throttle response and low price. Why SimonK? SimonK https://thebookmarkfree.com/story21825051/simonk-30a-esc-the-reliable-pick-for-fpv-quadcopters