4 layers48.3 × 25.4 mm

Stm32-test
formulaslug/fs-4-schematics
Electrical Design Repository for fs-4 schematics and PCBs
34 parts7
Boards in 1 GitHub repository, designed in KiCad, that use the TL3302AF180QJ by E-Switch (-20℃~+70℃ 1.8N 12V 3.5mm 4.3mm 50mA 6mm Black J-Lead Rectangular Button SPST Surface Mount,Vertical Without Bracket SMD,6x3.5mm Tactile Switches ROHS). See how each wires it, with its parts, size, README and files; the TL3302AF180QJ’s symbol, footprint and pinout are on its own page.

formulaslug/fs-4-schematics
Electrical Design Repository for fs-4 schematics and PCBs