Could I check if there is any cause for concern, if a buck converter is squealing. The squealing happens at random times, and when it does, it sometimes occur in short pulses, and sometimes continuously for a few seconds.
I have attached images to show the build, it's a 433mhz transmitter switch. The buck converter is taking in 5.2v(also tried 12v), and outputting 3.3v. Apart from the squealing, everything else is working as it should. The sound from the squealing does not bother me at all as it is very soft, but I am just wondering the cause of it, if it is sign of something going wrong, and if it will affect the circuit in the long run.