Power supply for a breadboard.
These are the source files for a KiCad project featured in a tutorial here:
https://www.youtube.com/playlist?list=PL3by7evD3F51fKkyrUbH-PCdwPCWc9F8a
If you want to make one of these for yourself you can use this design as it is or and alter it and make it better.
If you just want one, see the PDF file for the digikey order IDs of the parts and here is a place where you can order 3 of these (bare boards) for $6.30 including shipping (I don't get a penny of that by the way. I just think it is a decent deal):
https://oshpark.com/shared_projects/D6qLABBx
Here are some images of the release V3 (USB-powered) board:
