Make it work. Then make it better.
The starting point
Circuit equations can look settled on paper while the design still fails under load, at startup or in another operating condition. The lesson needs to move from calculating an answer to building, measuring and refining a working circuit.
What I built
GHOSTPIN begins with six guided labs, then opens an engineering desk of eighteen increasingly demanding work orders. You choose the circuit, place real component relationships, probe the result and run every operating condition against the customer's specification.
The game models resistors, capacitors, diodes, LEDs and NPN transistors with meters, traces and a design calculator close at hand. It rewards circuits that work under load, through timing changes and within a budget rather than a single memorised answer.
It is a self-contained browser game. Progress stays on the device by default, while notebook export and import provide a deliberate way to move or back up the work.
