4 layers157 × 100 mm

Spr23e bmu
derlucae98/spr23e-bmu
Battery Management Unit for the Scuderia Mensa SPR23e/SPR24e electric race car
433 parts1MIT
Boards in 2 GitHub repositories, designed in KiCad, that use the SN74HCS08D by Texas Instruments (-40℃~+125℃ 1.5V~4.2V 12ns@6V,50pF 1V~3V 2 220mV~330mV 2V~6V 2uA 4 5.4V~5.75V 7.8mA 7.8mA 74HCS Series AND Gate Push-pull Schmitt trigger SOIC-14 Logic Gates ROHS). See how each wires it, with its parts, size, README and files; the SN74HCS08D’s symbol, footprint and pinout are on its own page.

derlucae98/spr23e-bmu
Battery Management Unit for the Scuderia Mensa SPR23e/SPR24e electric race car

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