Thanks for all your answers,
So if this module is for test with highly precaution, what is best solution for using in the project with 3.3 and 5 v output ?
I read some articles and more of them talk about linear regulator like ams1117 or lmxx it others.
And some of them tell to use buck convertors.
Which one is better for long use with out fearing of something bad happen?(my 5v relay module fired)
And one other thing, after 5v problem 3.3 v pass all input voltage too so I buy multiple new ams1117 and replace them with old ones on ywrobot, and everything fine for a while, but after that, 5v output starting to pass all input voltage! Again! Why???
I make another PCB with extra ams and capacitors(100uf25v, 10uf16v) that I have, 3.3 v works fine so far, but 5v on this board start to pass all input voltage !! :(((
Why ?? What’s the problem?? Are these ams parts so easy to break? Or I did something bad and wrong ??