Boards in 1 GitHub repository, designed in KiCad, that use the SN7414N by Texas Instruments (0℃~+70℃ 16mA 2.4V 22ns@5V,15pF 2V 4.75V~5.25V 400mV 6 600mV 7400 800uA Noise suppression function Push-pull Schmitt trigger PDIP-14 Inverters ROHS). See how each wires it, with its parts, size, README and files; the SN7414N’s symbol, footprint and pinout are on its own page.
robertrico/dino-homebrew
A perfboard with the bus edge and the slot decode every DINO card repeats. Plug it into any of J1-J8 on the Rev 1.0 mainboard, pick the slot with one shunt, bodge the card on the grid.