What are the Robofusion projects?

Aircraft and parts we design, print, build and fly ourselves, released as free open-source designs with complete build guides. Each one comes with the printable files, a parts list and the firmware configuration it needs, so it can be reproduced rather than just admired.

Are the designs free to download?

Yes. The printable designs are released under a Creative Commons licence unless a project says otherwise, and every one is available to download. We also sell parts kits for people who would rather not source the electronics themselves, but nothing requires buying anything.

Where do I find the printable files?

On MakerWorld, linked from each project page along with the print settings the design was tested with. The project pages themselves carry the build guide, the bill of materials and the firmware setup, which is the part a model file cannot tell you.

Can I modify or sell prints of these designs?

Modify them freely — that is what open source is for, and improvements are welcome. Commercial use is a different question and depends on the licence each project carries, which is stated on the project itself. The default is a licence that permits sharing and adaptation but not commercial sale.

Robofusion Original Projects

Aircraft and hardware we design, print, build and fly ourselves — published open-source with complete build guides, firmware configuration, bill of materials, and a one-click parts kit for each project.

Current projects

Grasshopper5 — Open-Source 5-Inch Long-Range FPV Frame — the tilted-rotor printable frame with 1,800+ downloads on MakerWorld: full build guide, ArduPilot/INAV/Betaflight tilt setup, and the matching electronics kit.
Free 3D-Printable Cases & Mounts for MicoAir Sensors — protective cases and airframe mounts for the MTF-01 / MTF-02 / MTF-02P optical-flow sensors and the WiFi Link module, with STLs and print notes.

On the roadmap

Grasshopper wing add-ons and control surfaces
A complete ArduPilot fixed-wing build series: assembly → setup → first flight → range testing
Long-range LoRa / Meshtastic airborne experiments

Building with these designs

The knowledge hub has the documentation for the hardware these projects use:

ArduPilot Basic Configuration — what a new multirotor has to be told before it flies
Flight Controller Firmware Flashing Guide
AIO or a Stack? — choosing the electronics layout before you print
ESC Firmware Explained
Optical Flow Setup Guide — for the sensors the printable cases are designed around
MicoAir H743 V2 — User Manual · MicoAir F405 V2 — User Manual

All designs are released under CC BY-NC 4.0 unless noted. Find every printable design on MakerWorld. Subscribe on any project page to follow new builds.

Where to buy

Parts kits for these builds, shipped from Canada with free Canada-wide shipping:

Grasshopper5 Frame Kit — the printed frame with optional electronics
Robofusion 5-Inch FPV Electronics Kit — a complete ArduPilot set that fits any 5–7 inch frame

Written and maintained by the Robofusion engineering team.

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Comments & build logs

Built one? Questions about the setup? Post below — sign in with GitHub.

Current projects​

On the roadmap​

Building with these designs​

Where to buy​

Comments & build logs

Current projects

On the roadmap

Building with these designs

Where to buy