Open Source Grasshopper5 5 inch Long Range FPV Frame Kit

📘 Documentation & Guides

• Grasshopper5 — Full Build Guide — the complete open-source build: printable files, parts list, assembly and the firmware tilt configuration
• ArduPilot Basic Configuration — frame type, DShot, motor order, calibration and first arming
• Firmware Flashing Guide — ArduPilot, PX4, INAV and Betaflight, plus DFU recovery
• Optical Flow Setup Guide — for the optical-flow-assisted position hold this airframe is designed around

Setting it up with an AI assistant? Read our AI setup guide first. It shows you how to point ChatGPT, Claude or Gemini at the official manual for this product, so the answers come from the real pinout and parameter names instead of guesses.

1. Introduction:

The Grasshopper 5 is a 5-inch FPV frame that allows adjustable angles between the rotor plane and the body, is 3D-printing-friendly, and has excellent compatibility with mainstream FPV drone hardware.

Not all about science, but all about fun!

2. Grasshopper 5 Design Concept:

I know that designing a drone with an angled rotor plane is not a novel idea. Many similar designs exist, with DJI FPV being one of the most well-known examples. However, none of these designs cater to DIY enthusiasts or are compatible with the current mainstream FPV hardware. Therefore, I wanted to create a frame where the rotor plane could be angled relative to the body and the angle could be flexibly adjusted using 3D-printed parts. This would make it easier for more people to try out this layout and explore its potential benefits.

The design isn't strictly science-based but still exciting to explore.

3. Features of the Grasshopper 5:

• Reduces drag generated by the body, improving flight efficiency.
• Adjustable tilt angle (by swapping out two 3D-printed parts) to suit different forward flight speeds.
• Compatible with mainstream open-source flight controllers such as Betaflight, Ardupilot, INAV, and more with simple configuration.
• Compatible with most mainstream FPV hardware and installation methods.
• Optional wings can be added to further increase flight efficiency during forward flight (coming soon).
• Integrated and well-placed sensors like the compass, GPS, TOF, and optical flow to minimize interference, achieving high precision in position control.
• Supports GPS-based hovering, waypoint flight, autonomous return-to-home, autonomous landing, and optical flow-assisted hovering and position flight.

4. Application Scenarios for the Grasshopper 5:

• Suitable for multirotor drones where forward flight is the primary operating condition.
• Requires autonomous positioning capabilities.
• Long-range flight.
• Carries light payloads that need to face the flight direction.
• FPV Freestyle.
• Other unexplored uses...

5.Detailed introduction and tutorial：

Grasshopper 5 — full build guide

6.Recommended Setup:

• Flight Controller: MicoAir H743
• ROBOFUSION: MicoAir H743 Flight Controller

• ESC: MicoAir 4-in-1 ESC 50A 2-6s
• ROBOFUSION: MicoAir 4-in-1 ESC

• GNSS (GPS): MicoAir M9 or M10 GNSS
• ROBOFUSION: MicoAir M9/M10 GNSS

• Optical Flow & Lidar Sensor: MTF-01P
• ROBOFUSION: MTF-01P Sensor

Follow us on MakerWorld: ROBOFUSION