When this stack is up and running, you get a full open-source FPV quad: a Betaflight flight controller on the RP2350 chip, a four-in-one ESC on AM32, ExpressLRS receivers, carbon freestyle frames and motors, all designed by OpenDrone and released as open hardware. The craft itself wears a black frame with green three-blade props, a front camera and a rear antenna. Clean look, in my view.
Everything is published openly under the CERN-OHL-S license, and anyone may build the boards, fork the designs or even sell their own versions, as long as changes are shared back. The maker argues that FPV software has been open for years while the hardware stayed closed and unrepairable, and that a 2024 shutdown of closed ESC firmware left people unable to update their drones. That reasoning holds up for me; being able to inspect and fix what you own seems like the right goal.
The range is broad: the FC and ESC come in 30x30 and 20x20, the receivers in Lite, Lite-UFL, Mono and Gemini, the frames in three and five inch, the motors in 1604 and 2306. Offering both stack sizes seems smart to me; it should suit tiny builds and larger freestyle rigs alike. Using Betaflight, ExpressLRS and AM32 also keeps every layer of the firmware open.
Not everything is done yet: frames and motors remain in development and unreleased. The first batch of controllers and ESCs leaves Belgium for EU buyers at the start of November 2026, each product has its own funding goal closing 15 December 2026, and funded items ship by 31 March 2027. One more detail worth noting: the maker credits LLMs for getting the project this far.
Project by OpenDrone. Watch it on their YouTube channel: