Some Players Have issue with automatrons even when the have all necessary perks and supplies they can't  build some advance parts for they robots.

game have a bug in perk tree, the bug is in robotic expert on first rank when you chose to add 1st point to this rank game add it but automatron dlc ignore
that perk, it easy to see if you need part with one rank only of robotics expert in building station it will still show you that you don't have the perk, going to rank 2 or 3 will only remove lock from perk picture but will still not allow you to build, that all because for dlc you still missing rank 1 ot this perk.

only solution for this is add manually rank 1 of robotics expert witch console command:

player.addperk 0004d889

Plus it have to be done every time you add point to that perk, when go to rank 2 and 3  you have ad this 1st rank in console as well,

I add file witch this command,it have to be put in game folder where you have .exe file (not data)

then  get in console and write

bat autfix

Good Luck