Скачать или смотреть How Drone ESCs Work (so I built my own)

I designed a 4-in-1 ESC from scratch, ordered it from JLCPCB, and put it in a real drone. In this video I explain how brushless motors work, what back-EMF is, how gate drivers and bootstrap circuits work, and how all of this comes together in a custom PCB.

Then I flew it. And stress tested it at full throttle until the battery died.

Links:
GitHub (schematics, PCB, BOM, gerbers): https://github.com/Just4Stan/Open-4in...
AM32 firmware: https://github.com/AlkaMotors/AM32-Mu...

Chapters:
0:00 - Intro
0:30 - How brushless motors work
0:50 - Three phase motors explained
1:01 - Rotating magnetic fields
2:32 - Back-EMF and sensorless commutation
3:40 - Zero crossing detection
4:07 - First board test results
4:30 - ESC schematic walkthrough
4:55 - Three phase half bridge & MOSFETs
5:00 - Why you need a gate driver
5:22 - Bootstrap capacitors explained
6:09 - The microprocessor (AT32F421)
6:29 - 4-in-1 PCB design
6:51 - Current sensing
7:07 - Boards arrived — first power on
8:00 - Putting it in a drone
8:10 - Flying with friends
9:25 - Full throttle stress test
9:57 - Results

#fpv #esc #electronics #pcbdesign #drone #opensource #kicad #jlcpcb #am32 #betaflight #brushlessmotor