Solid little puzzler, didn't play it to the end, but got a good idea of how it works and had good fun with it. The two main pieces of feedback I have are
- You should probably get to the point sooner. I think one "fill in the blanks" level would be plenty enough for the game. Its strength lies within the fact that you sometimes don't want to put the obvious piece in. I also think the rules description is a little unclear, didn't realize a "stray connection" only included those that had voltage applied (though it does make sense.
- I think the control scheme really needs some work. I want to be able to drag the pieces directly out of my toolbox and onto the board, not click them once to spawn and then click them again to drag. To me, right-clicking to rotate would have been much more intuitive and maybe adding a bin or something where you can drag pieces to to delete them. Would also be nice to be able to swap two pieces without having to delete one of them.
Apart from that, I quite enjoyed the game and some of the puzzles were very cleverly designed, well done!