So if like me you tried to set up a system to make one thing turn on while the other was off using what you thought would be a simple NOT gate. But it didn't F***ing work.

Here's why it won't and how to get it to.

It's based on the idea of the NOT gate itself needing power. Powering the wall won't working so you need to directly connect power to its input. That alone won't work as it creates a positive input.

So to fix this you have to put the power supply (seperate to the supply to the switch) through a NOT gate and the output of this second not gate into the former NOT gate. Why? because that keeps power flowing in but makes it say an input of 0. The need for power overpowers the inputs so just plugging the switch straight in won't work as no power is at the gate to be transfered.

It's actually based off old NOT gates in the real world which needed power in them to work.