8 layers

FIRM v1.1
NCSU-High-Powered-Rocketry-Club/FIRM-KiCad
Full and open hardware design for FIRM
108 parts1MIT
Boards in 1 GitHub repository, designed in KiCad, that use the RMCF0402JT10K0 by Stackpole Electronics (SEI) (-55℃~+155℃ 10kΩ 50V 62.5mW Thick Film Resistor ±100ppm/℃ ±5% 0402 Chip Resistor - Surface Mount ROHS). See how each wires it, with its parts, size, README and files; the RMCF0402JT10K0’s symbol, footprint and pinout are on its own page.

NCSU-High-Powered-Rocketry-Club/FIRM-KiCad
Full and open hardware design for FIRM