2 layers100 × 100 mm

G2-Control
bernerus/TetrodeBoards
The Tetrode Boards by Ian White, GM3SEK. Redesigned with KiCad.
93 parts
Boards in 1 GitHub repository, designed in KiCad, that use the LMC555CMX by Texas Instruments (-40℃~+85℃ 1.5V~15V 150uA 3MHz SOIC-8 555 Timers / Counters ROHS). See how each wires it, with its parts, size, README and files; the LMC555CMX’s symbol, footprint and pinout are on its own page.

bernerus/TetrodeBoards
The Tetrode Boards by Ian White, GM3SEK. Redesigned with KiCad.