Step:
1. All the parts we need in this project.
2. Solder it on the board.
3. Finished.
4. Connect it and test.
Product list:
LM317 https://www.utsource.net/sch/LM317
2 connector https://www.utsource.net/sch/connector
4007 diode https://www.utsource.net/sch/4007%20diode
Led https://www.utsource.net/sch/Led
More details, pls check the video on Youtube: