For this review, I made a 56-volt to 24-volt buck converter with a 42-volt Undervoltage lockout. It is rated to five amps but will never see over two amps. The main reason for trying out the PCB assembly service was that I did not have time to build this myself, and I was already going to order some of the parts from LCSC, so I figured, why not! If you want to try it out, check out PCBs from $0 https://jlcpcb.com/IYB (Free Setup, Free Stencil, and Coupons!).
The Design Process.
The design process doesn't very much from standard PCB design using EasyEDA PRO. There are two things you will want to keep in mind while designing. First, you will want to ensure the part is in stock with JLCPCB. You will also want to know if the part is a "basic" or an "extended" inventory. Extended have an extra cost. I wouldn't stress over that extra cost too much on parts you need, but you might want to keep an eye on it for simple parts like resistors.
Ordering.
JLCPCB has made ordering very simple when using EasyEDA Pro. It is as simple as clicking the "order" drop-down and then "order PCB." This will open you into JLCPCB's website, where you can pick your board and assembly options.