What is this for?
There seems to be a bar on the bottom side of the machine that you can drag.
Dragging it to the left will cause the red bar to turn clockwise, dragging it right will cause it to turn counterclockwise.
Why do ammeters have a resistance of 0.2 ohms and wires have one of 0.042857158 ohms? This is a circuit diagram, not real life. Wires and ammeters must be ideal, they must have a resistance of 0 ohms. Otherwise they would need to have the resistor symbol. Also a suggestion for the next version: Give the user the ability to spawn new parts with custom parameters.