The Matek F405-CTR flight controller already has an integrated PDB, which means that the separate ESCs are connected directly to the FC board so that it can supply their power. However, if you have a 4 in 1 ESC, the connection might get a bit confusing.
Just follow the diagram below:
The battery is connected to the ESC, not the Flight Controller.
The GND and VBAT are connected in any of the 4 – (negative) and + (positive) pads of the FC board.
If your ESC has a current sensor, you must connect the corresponding wire to the CURR soldering pad.
The motors 1, 2, 3 and 4 are connected respectively on pads S1, S2, S3 and S4.
This diagram works for any FC that has an integrated PDB, such as DYS F4, BetaFlight F3, BetaFlight F4 or BetaFlight F7, and other AIO FCs available on the market.
If you have any questions, leave a comment!