Robofusion Knowledge Hub
Practical English documentation for open-source drones, robotics telemetry, LoRa serial links and selected Meshtastic-adjacent hardware — written and maintained by the engineering team at Robofusion.
We sell and support this hardware in North America, and we use it ourselves. This hub is where we put the setup guides, reference material and field notes we wish existed in English.
Start here
Give your AI assistant our reference file and let it plan the setup while you do the physical steps — Use Your AI Assistant has a prompt to copy.
New to building? Start with the guides
Cross-product, plain-English explanations of the things every build runs into — written for someone doing it for the first time.
- Firmware Flashing Guide — ArduPilot, PX4, INAV and Betaflight, plus DFU recovery when the board stops appearing.
- ArduPilot Basic Configuration — what a new multirotor has to be told before it will fly, and the parameter behind each step.
- PX4 Build & Configuration Walkthrough — a complete small quad, from soldering the ESC to the first hover.
- AIO or a Stack? — the first hardware decision a build forces on you, and what each layout gives up.
- MicoAssistant Guide — the browser tool for configuring telemetry radios and sensors, and how to get a device to appear in it.
- Drone GPS & Compass — How They Work Together — what each one actually does, why both are needed, and the parameters that connect them.
- External Compass Orientation — how to read the rotation matrix and pick the right
COMPASS_ORIENTvalue. - Flight Controller Orientation — mounting the board any way round and telling the firmware about it.
- u-blox GPS Baud Rate — why the module and the flight controller disagree, and how to fix it for good.
When something goes wrong: ArduPilot FAQ · PX4 FAQ · INAV FAQ
Original Projects
Aircraft we design, print, build and fly ourselves — free open-source designs with complete build guides and parts kits. See the Projects section in the top menu.
- Grasshopper5 — Open-Source 5-Inch FPV Frame — the tilted-rotor printable frame with 1,800+ downloads: full build guide, firmware tilt setup, and a one-click electronics kit.
- Sensor Cases & Mounts — free printable cases for the MTF optical flow sensors and the WiFi Link module.
Flight Controllers
The brain of the aircraft — manuals for the MicoAir flight controllers we sell, covering ArduPilot, PX4, INAV and Betaflight.
- MicoAir H743 V2 — User Manual — the do-it-all flagship: dual IMU, Bluetooth telemetry, all four firmwares.
- MicoAir H743 AIO — User Manual — the same H7 flight controller with the ESC built in, in 35 A and 45 A versions.
- MicoAir F405 V2 — User Manual — the budget long-range pick with the Bosch BMI088 IMU.
- MicoAir F405 V2 — ArduPilot Setup Guide — a complete first-flight setup, from flashing to motor order to arming.
- MicoAir F405 Mini — User Manual — the 20×20 board for compact builds.
- NxtPX4 V2 — User Manual — 20×20 open-source mini board for PX4 research and VIO drones.
- Bluetooth Wireless Tuning — tune an H743 V2 from a PC with no USB cable.
915 MHz Telemetry Radios
The fastest way to get a long-range telemetry link working with ArduPilot or PX4 — and to understand what the radio is actually doing.
- LR900 Telemetry Radio — User Manual — specs, model differences, interfaces and all configurable parameters.
- LR900 Web Configurator — every parameter explained, with ready-made settings for ArduPilot, PX4 and RTK.
- ArduPilot — Telemetry Setup Guide — wiring, parameters and a connection walkthrough in Mission Planner, with troubleshooting.
- PX4 — Telemetry Setup Guide — MAVLink and serial setup, plus automatic and manual connection in QGroundControl.
- CP2102 Driver Installation (Windows) — the one-time driver step before a radio shows up as a COM port.
WiFi Telemetry
Wireless flight-controller tuning and multi-drone networking over dual-band WiFi 6.
- MicoAir WiFi Link — User Manual — specs, AP/STA/BLE modes, wiring, web configuration and the full AT command reference.
- MicoAir WiFi Link — Multi-Drone Networking Tutorial — one ground station, many aircraft: STA-mode setup for swarm and light-show fleets.
- MSTAR24 — One-to-Many Telemetry — the same problem over 2.4 GHz radio: one ground unit, up to eight aircraft.
2.4 GHz Telemetry & RC
Long-range 2.4 GHz LoRa links — data only, or control and data combined.
- LR24 2.4 GHz Telemetry Radio — User Manual — LR24-F / P / F-Mini model guide, full parameter reference, and how to choose between 915 MHz and 2.4 GHz.
- TRS — RC + Telemetry Combo User Manual — one 2.4 GHz link for both stick control and MAVLink telemetry, with Bluetooth ground station on Android.
FPV Video Transmitters
Analog 5.8 GHz video — the low-latency link an FPV pilot actually flies on.
- VT5804 — User Manual — 2.5 W, 48 channels, wiring, LED codes and TBS SmartAudio control.
- VT5805 — User Manual — the 4 W long-range version with active cooling.
- A5800 FPV Antenna — Lab Test Report — measured VSWR, gain, efficiency and radiation patterns, plus antenna basics.
GPS, GNSS & RTK Positioning
From meter-level GPS to centimeter-level RTK — module manuals plus the background explainers that make the acronyms make sense.
- What Is RTK? — Plain-English Explainer — how a base station and rover reach 1–2 cm accuracy, FIX vs FLOAT, and who actually needs it.
- MA-RTK Series — User Manual — the MA-RTK-AIR-982 / 626 / F9P rover modules and MA-RTK-BASE station: specs, wiring, ArduPilot / PX4 setup.
- RTK Setup Guide — base station deployment, RTCM corrections via Mission Planner or telemetry radio, and dual-antenna GNSS heading.
- MG-F10-C Dual-Band GNSS — User Manual — the best non-RTK positioning available: L1+L5, sub-meter accuracy.
- GPS Module — User Manual — the standard GPS-and-compass module: wiring, mounting and first-fix checks.
Optical Flow & Range Sensors
GPS-free indoor position hold — sensor manuals plus the one configuration guide that covers all of them.
- MTF-01 — User Manual · MTF-01P — User Manual · MTF-02 / MTF-02P — User Manual · MT-01P 10m Laser Rangefinder — User Manual · MT-06 6m Laser Rangefinder — User Manual
- Optical Flow Setup Guide — ArduPilot / PX4 / INAV parameters, EKF source setup, and troubleshooting.
ESCs
The electronics between the flight controller and the motors — what the firmware on them does, and how to set them up.
- Bluejay 4-in-1 ESC — User Manual — the 50 A and 60 A boards: specs, wiring, current sensing and DShot support.
- AM32 4-in-1 ESC — User Manual — the 55 A and 70 A boards running 32-bit AM32 firmware.
- Configure ESC Parameters — passthrough from the flight controller, and what each ESC setting actually changes.
- ESC Firmware Explained — AM32, Bluejay, BLHeli_S and BLHeli_32: which your ESC can run, and which to pick.
Servos
- SERVOMY SDS1901 — User Manual — the metal-geared 9 g-size HV servo: voltage vs torque, PWM reference and wiring.
Developer Reference
For building your own software against this hardware — protocol definitions with working, tested code.
- Micolink Protocol — the serial protocol the optical flow and range sensors speak, with C and Python parsers.
- UBX Protocol & NAV-PVT — reading a u-blox GPS directly: frame format, field scaling and configuration.
- PX4 MAVLink Stream Rates — raising the IMU data rate for MAVROS and visual-inertial odometry.
- Flight Controller ID — where to read a board's unique hardware identifier in each firmware.
More coming
This hub is being built out. More original buyer guides and field tests are on the way — follow along in Projects, where you can also subscribe for updates.
Written and maintained by the Robofusion engineering team.