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# Known flaws

A project log for IOkFly-Race-AM32-4in1-ESC

4in1 ESC based on AM32 FW for quadcopter racing.

iokfly-blenderisIOkFly-BLENDERIS 03/13/2024 at 12:010 Comments

This design is meant for inspiration, adapting components, layout or any other features on your own designs needs to be thoroughly tested in prototyping stage. Issues described bellow are not fixed in the design files included in this project


 * Issue in schematic with MCU NRST pin being pulled up with 10k resistor to VDD. It is a error in a schematic, NRST pin should be floating or tied to the ground trough 100nC cap. Altho I did not have any issues with this error, but others had problems with flashing FW on the MCUs.
 * Issue with inductotr for 10V power supply. Inductors A rating is underspect in this design, I had several cases with blown inductor. I would recomend using atleast 600mA rated inductor for your build. Issue is not the currect draw from the MCUs and mosfet drivers, but the inductor current ripple of the BEC itself.
 * We had several blown ESC because of the 3D printed mounting ripping off mosfet gate resistors on the corners. Layout or mounting should be revised. 

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