Fun game! I enjoyed the aspect of building the robot and having to find more build stations throughout the level. I think the process is super enjoyable and really could allow for a lot of experimentation if you give the player a good tool set.
If you wanted to improve, I suggest looping the music but also highlighting the robot piece the player is currently holding or touching, I had trouble figuring it out for the first bit.
I could see you developing this out into more of a metriodvania style game where the entire world is one big map and you have to travel about getting more pieces.
Overall, cool game!