For programming your HT without having to build anything, you could buy the cables recommended by hams. I ended up buying a cable on AliExpress with a Prolific PL2303-chip (so says linux). Unfortunately it doesn't program the Yaesu FT-65.
Luckily the fix is quite easy:
Once you have done this, keep in mind that your cable will no longer work for most other radios.
Other interesting projects: