2 layers52 × 87.3 mm

SturmFront
hannesweisbach/SturmFront
DIY fan-controller for indoor sports which adjusts fan speed according to your current heart rate
59 parts3MIT
Boards in 1 GitHub repository, designed in KiCad, that use the S202S01 by Sharp Microelectronics (8A No SIP-4 Solid State Relays (Triac Output)). See how each wires it, with its parts, size, README and files; the S202S01’s symbol, footprint and pinout are on its own page.

hannesweisbach/SturmFront
DIY fan-controller for indoor sports which adjusts fan speed according to your current heart rate