6 layers100 × 37 mm

PickleRick
icl-rocketry/Ricardo-PickleRick
A more compact Ricardo classic featuring a new sensor array, 4 pyro channels and 4 servo channels. Includes Ricardo bus plug too.
223 parts2MIT
Boards in 1 GitHub repository, designed in KiCad, that use the PCA9534RGVR by Texas Instruments (-40℃~+85℃ 1.5uA 10mA 2.3V~5.5V 25mA 4.1V 400kHz 8 8 I2C、SMBus Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver VQFN-16-EP(4x4) I/O Expanders ROHS). See how each wires it, with its parts, size, README and files; the PCA9534RGVR’s symbol, footprint and pinout are on its own page.

icl-rocketry/Ricardo-PickleRick
A more compact Ricardo classic featuring a new sensor array, 4 pyro channels and 4 servo channels. Includes Ricardo bus plug too.