2 layers

PlymouthKilobot2019
yorkrobotlab/openkilo
OpenKilo: A truly open-source Kilobot design revision that aids repair and extensibility
81 parts25
Boards in 1 GitHub repository, designed in KiCad, that use the MMBT6428 by onsemi (-55℃~+150℃ 1 NPN 100nA 200mV、600mV 250 350mW 500mA 50V 700MHz NPN Standalone SOT-23-3 Bipolar (BJT) ROHS). See how each wires it, with its parts, size, README and files; the MMBT6428’s symbol, footprint and pinout are on its own page.

yorkrobotlab/openkilo
OpenKilo: A truly open-source Kilobot design revision that aids repair and extensibility