Reference¶
Atomic articles — one fact, one home. Use search to find a specific topic.
Each article covers exactly one topic at full depth. Start with a guide in Build, Operate, or Learn — those guides link out to the reference atoms they depend on at the point in the build where each one matters. Come here and search when you already know what you're looking for, or browse the full list by topic below.
Physics & Flight¶
- Angular momentum in multirotors
- Hover and forward flight
- Induced velocity and sensor placement
- Inertia and stopping distance
- Lift and thrust
- Moment of inertia
- Pendulum stability
- Six degrees of freedom
- Vortex ring state
Control Systems¶
- Closed-loop control
- Feed-forward control
- Motor mixing
- PID — derivative term
- PID — integral term
- PID — proportional term
- RPM filter
Propulsion¶
- Brushless motors
- DShot protocol
- Electronic speed controllers
- Propeller balance
- Propellers
- Thrust-to-weight ratio
- Vibration isolation theory
Power Systems¶
Sensors & Flight Controller¶
- Barometer and magnetometer
- Flight controller hardware
- GNSS and GPS
- IMU and gyroscope
- IMU filter tuning
- Supplemental sensors
Communication & RF¶
- CRSF protocol
- Digital FPV
- ELRS MAVLink mode
- ExpressLRS protocol
- HDZero video link setup (VTX ↔ goggles)
- Serial communication protocols
EMC & Signal Integrity¶
- Capacitor placement for EMC
- Conformal coating
- EMC and signal integrity
- EMC noise sources in a drone
- Electronics installation
- Ferrite beads
- GPS antenna placement
- Star grounding
- Twisted pairs
Firmware (ArduPilot / Betaflight)¶
- ArduPilot Autotune
- ArduPilot Copter
- ArduPilot commissioning
- ArduPilot failsafe
- ArduPilot flight modes
- Flashing ArduPilot on an H7A3-class flight controller
- QGroundControl
Software Stack¶
- Betaflight profiles and modes
- Betaflight setup
- EdgeTX model configuration
- PID loop rate
- PID tuning and rate profile
- Resonance and filtering
- SITL simulation
- Throttle limiting
Payload Architecture¶
Piloting & Operations¶
- Blackbox analysis
- Emergency procedures
- Flight modes
- Maiden flight
- Piloting and operations
- Piloting progression
- Post-flight check
Safety & Regulations¶
- Acceptance validation
- Legal and regulatory (single source of truth)
- Pre-flight check
- Remote ID compliance
- Risk assessment
- Winter protocol
Aerial Imaging¶
Resilience & Community¶
Open Source & Philosophy¶
- Contributing guide
- Design rationale index
- FOSS stack in libdrone, and the DJI dependency problem
- Free and open source principles
- Open source philosophy
- Platform architecture
- Schema specification
- Vendor lock-in
89 articles, generated from the corpus at build time — never hand-maintained, can't drift from what's actually here.