Φ Stack — impedance puzzle
Sudoku for PCB stackups. Given the impedance + thickness constraints, derive the layer order and Cu weights that satisfy all of them.
The PhyCircuit playground. Experiments, puzzles, and ideas that don’t belong on the main site — but earn their place by being too fun to leave on the cutting-room floor. Drag a trace. Solve a stackup. Watch heat move.
Engineers buy on substance — and they share what’s fun. The main PhyCircuit site is the resume. The Lab is the workshop, with the door open. Each artifact below is real engineering rendered as a game, a demo, or a thing you can play with.
Drag traces from a BGA pin matrix to the board edge. Three levels of increasing pin density, limited via budget. The breakout is the design — see if you can survive 0.5 mm pitch.
Sudoku for PCB stackups. Given the impedance + thickness constraints, derive the layer order and Cu weights that satisfy all of them.
Drag heatsinks, thermal vias, copper pours, and fans to keep every component below its Tj_max. Real FDM thermal physics under the hood — the same solver as Φ Thermo.
Scroll-driven storytelling. Watch a BGA fan out, see traces route through layer transitions, follow signals from pin to bench. Tells the firm’s story without text.
When you’re done playing, the real PhyCircuit team designs production-grade PCBs. Fixed-fee quote in 60 seconds.