Falstad Circuit Simulator Official

Mira zoomed in. She saw it: a single, flickering number next to the problem node. V = NaN . Not a Number.

Inside the simulator, the universe stirred. falstad circuit simulator

Mira smiled. She added an LED.

It waited. Not for a user, not for a purpose. Just for the next time someone dragged a wire a little too far, connected a node a little too wrong, and pressed "Simulate." Mira zoomed in