GPS Rescue is Betaflight's return-to-home failsafe. When triggered (link loss, low battery, or manual activation), the quad climbs to a configured altitude and flies back to where it armed. Prerequisites GPS module connected and assigned to a UART (enable GPS in the Ports tab for that UART) 6+ satellite lock before …

Betaflight and INAV are both open-source FC firmware. They share some code history but have diverged into distinct tools with different strengths. The wrong choice for a GPS build results in either a frustrating experience or wasted capability. Core Philosophy flowchart LR BF[Betaflight] -->|Optimised for| M1[Manual …

A clean OSD gives you essential flight data without cluttering the image for recording review. The goal: show only what you'll actually need after landing. Analog OSD (MAX7456) The MAX7456 chip on most FC stacks handles OSD overlay on analog video. Minimal useful set for recording investigation: Element Reason Battery …

Comprehensive guide to sensor fusion using Kalman filters for combining data from multiple sensors. What is Sensor Fusion? Sensor Fusion: Combining data from multiple sensors to produce more accurate, reliable, and complete information than any single sensor alone. graph TD A[GPS<br/>Low rate, High accuracy] --> …