Runs on · OpenFC-Lite
Betaflight
Betaflight is the flight controller firmware used in most mini-quad freestyle builds. OpenFC-Lite is a Betaflight-target board; the RP2350-platform port is being upstreamed.
€1 per order · forwarded
The firmware makes the hardware fly. We pay the people who wrote it.
Every OpenDrone board runs on firmware we didn't write. For every unit sold we forward €1 to the upstream project: one contribution, one transaction, one line item in our books. Here's the list, with links if you want to give them more directly.
01 · How the split works
When you buy a board, the checkout total covers the hardware price plus a €1 firmware contribution baked in. We batch those contributions and forward them to the upstream project via GitHub Sponsors, OpenCollective, or a direct bank transfer, depending on what the maintainers have set up.
Buy a stack (an OpenFC-Lite and an OpenESC in one order) and the split doubles: €1 to Betaflight, €1 to AM32. Every board carries its own contribution, so both maintainers keep their cut.
02 · The projects
Runs on · OpenESC
AM32
AM32 is a multi-MCU ESC firmware alternative to BLHeli, GPL-3.0 licensed. OpenESC runs AM32 on AT32F421 channels: the same firmware as other AM32 ESCs, no custom fork, no vendor lock-in.
Runs on · OpenRX
ExpressLRS
ExpressLRS is the open long-range 2.4 GHz / sub-GHz radio protocol. OpenRX targets are upstream (Unified_ESP32C3_2400_RX for Lite, Unified_ESP32C3_LR1121_RX for Mono/Gemini) so you flash with the standard ExpressLRS configurator.
03 · Giving directly
Want to give the maintainers more than the baked-in €1? Where a project runs a public donation page, its card above links to it. Giving directly means no payment-processor fee: 100% of what you send reaches them.