how long did it take you to make your first robot, days, weeks, months or even years?

Question: how long did it take you to make your first robot, days, weeks, months or even years?
- Keywords:
  robot
Asked by Meg.the.egg13 to Frederik on 9 Mar 2016.
- Frederik Gossen answered on 9 Mar 2016:
  
  That really depends on the robot that you want to build. My first robot was Lego Mindstorms which was pretty straight forward and took maybe a day. More advances robots can take years until they work properly.

Question: how long did it take you to make your first robot, days, weeks, months or even years?