8 layers28.9 × 28.9 mm

OpenAIO Whoop
OpenDrone-hw/OpenAIO-Whoop
Open-source 1S whoop AIO: flight controller, 4-channel brushless ESC, ExpressLRS receiver and analog VTX, 25.5x25.5 mm. Planned.
249 parts13CERN-OHL-S-2.0
Boards in 1 GitHub repository, designed in KiCad, that use the MS2A40LDF by MSKSEMI. See how each wires it, with its parts, size, README and files; the MS2A40LDF’s symbol, footprint and pinout are on its own page.

OpenDrone-hw/OpenAIO-Whoop
Open-source 1S whoop AIO: flight controller, 4-channel brushless ESC, ExpressLRS receiver and analog VTX, 25.5x25.5 mm. Planned.