2 layers

RPM411
TjarkG/RPM411
Reverse Engineering of the Vaisala RPM411 Pressur Sensor for the RS41 Radiosonde
88 parts13
Boards in 2 GitHub repositories, designed in KiCad, that use the 74LVC3G04DC by Nexperia (-40℃~+125℃ 1.65V~5.5V 24mA 24mA 3 3.8ns@5.5V,50pF 4uA 74LVC Schmitt trigger VSSOP-8-0.5mm Inverters ROHS). See how each wires it, with its parts, size, README and files; the 74LVC3G04DC’s symbol, footprint and pinout are on its own page.

TjarkG/RPM411
Reverse Engineering of the Vaisala RPM411 Pressur Sensor for the RS41 Radiosonde

rkujawa/retro-uart
Retro-fitting 16C750E into DIP socket! For all your retro hardware project needs.