Spintronics: circuits you can touch

A chain moves, one wheel resists and another part stores energy. Everything is visible. Could following a rotating mechanism help you understand an electrical connection?

Spintronics Act One by Upper Story (affiliate link) offers mechanical circuit puzzles. Chains and rotating components represent electrical relationships. It predates 2026, but remains a distinctive approach for people who prefer building and observing before working with symbols.

A moving analogy

The construction replaces electrical connections with mechanical transmission. Components represent resistance, energy storage and branching. In the video, choose one route and follow what happens at a junction. Seeing a chain move is only the beginning of explaining the whole circuit.

The analogy gives you concrete predictions to test. If a component provides more resistance, what should change? Answer before operating the system. Then compare the motion with your prediction and consider which other connection may have influenced it.

This game should not be confused with the scientific field of spintronics, which studies spin-related properties in electronic systems. Here, the commercial name accompanies a mechanical representation of circuits, not a quantum physics laboratory.

Choose where to begin

Act One introduces series and parallel connections, capacitors and logic. Act Two goes further with the transistor and inductor. Check which components each box includes: a puzzle requiring another act’s parts cannot be solved through ingenuity alone if those parts are missing.

When comparing Spintronics kits on Amazon (affiliate link) , distinguish a complete set from spare parts and expansions. The book’s language matters too, because the conditions of each challenge are part of the puzzle.

Change one thing, then reset

Choose a starting circuit from the manual and write down which component you expect to move, and when. Test it from the specified state. Change one permitted connection and repeat. Leaving stored energy in the mechanism or changing its starting state makes the comparison less useful.

You can take turns with someone: one person predicts, the other operates and records. Describe the first point where the observation differs, rather than rebuilding everything at once.

Keep fingers and loose objects clear of moving chains and follow the manual’s limits. The resistance you feel belongs to this mechanism; the analogy does not make household electrical circuits safe to handle.

For another machine you can explain part by part, Turing Tumble asks how a stream of marbles can represent logic and memory.