4 layers204 × 85 mm

Nixie clock
MG-5/nixie-clock-hardware
Hardware for controlling six Nixie IN-14 tubes as clock (HH:MM:SS)
168 parts2MIT
Boards in 2 GitHub repositories, designed in KiCad, that use the SN74HCS541DGS by Texas Instruments (-40℃~+125℃ 1 16ns@6V,50pF 2V~6V 2uA 7.8mA 7.8mA 74HCS 8 Output enable Schmitt trigger Tri-State VSSOP-20 Buffers, Drivers, Receivers, Transceivers ROHS). See how each wires it, with its parts, size, README and files; the SN74HCS541DGS’s symbol, footprint and pinout are on its own page.

MG-5/nixie-clock-hardware
Hardware for controlling six Nixie IN-14 tubes as clock (HH:MM:SS)

MG-5/vfd-clock-hardware
Hardware for controlling six VFD IV-17 tubes as clock (HH:MM:SS)