6 layers31.2 × 33 mm

4in1-mini
OpenDrone-hw/OpenESC-20x20
Open-source 4-in-1 AM32 ESC for FPV drones. 20x20 mm, 2-6S, one MCU per motor, CERN-OHL-S-2.0.
191 parts279CERN-OHL-S-2.0
Boards in 2 GitHub repositories, designed in KiCad, that use the RTT011153FTH by RALEC (-55℃~+125℃ 115kΩ 25V 50mW Thick Film Resistor ±1% ±200ppm/℃ 0201 Chip Resistor - Surface Mount ROHS). See how each wires it, with its parts, size, README and files; the RTT011153FTH’s symbol, footprint and pinout are on its own page.

OpenDrone-hw/OpenESC-20x20
Open-source 4-in-1 AM32 ESC for FPV drones. 20x20 mm, 2-6S, one MCU per motor, CERN-OHL-S-2.0.

OpenDrone-hw/OpenESC-30x30
Open-source 4-in-1 AM32 ESC for FPV drones. 30.5x30.5 mm, 2-8S, one MCU per motor, CERN-OHL-S-2.0.