I need dc power supply module step down, can someone help me make a this part?

Welcome aboard! Given more information I could probably make such a part. To do so I would need a mechanical drawing or a pointer to the site that sells the board, to get the dimensions of the board and what the connectors do. A flat (as opposed to this one which is tilted) image of the board should be enough to figure out what is needed though since there probably isn’t a mechanical drawing.

edit:

I think the ywrobot (numberr 9 here)

http://omnigatherum.ca/wp/?p=262

is as close as you will come. It looks different but does the same thing i.e. provides 5V and 3.3V to header connectors for a breadboard.

Peter

Thank you so much Peter for your information