Just turn off the power source (flip the switch near it) or change the voltage between 1, 2, and 3 on the power source.
I've been messing around with electronics for a few days now (this is my first time messing with them) and I wanted to try and make a 7-segment display show the current voltage (not super accurate). If anyone sees this and knows how I can make this better, I would love feedback. I feel like I am way over complicating this thing and that there is most likely a much better design.
