4 layers130 × 64.3 mm

Tspico v3
timex-sinclair-projects/tspico-hardware
Status 2026-10-19: prototype 3 (v3.0-proto3, changes below). Proto1 (v3.0-proto1) was built and brought up; proto2 added its fixes (below).
156 partsCERN-OHL-S-2.0
Boards in 1 GitHub repository, designed in KiCad, that use the 74LVC32APW by Nexperia (-40℃~+125℃ 1.08V~2V 1.2V~3.6V 120mV~800mV 24mA 24mA 4 40uA 5ns@3.3V,50pF 74LVC Series OR Gate Overvoltage-tolerant input TSSOP-14 Logic Gates ROHS). See how each wires it, with its parts, size, README and files; the 74LVC32APW’s symbol, footprint and pinout are on its own page.

timex-sinclair-projects/tspico-hardware
Status 2026-10-19: prototype 3 (v3.0-proto3, changes below). Proto1 (v3.0-proto1) was built and brought up; proto2 added its fixes (below).