Does anybody have any ideas on how to make a three-way switch (a switch where “ON” directs the current one way and “OFF” directs it the other way)?
I think you’ll have to use 2 transistors to get this effect. The easiest way is to build a synchronous-switch (the two transistors are linked by a piece of chain on the gates and when you open one, it closes the other). You can also use 2 transistors to make a flip flop. Then you could control it with a button.