This build is made for exactly the kind of flying the maker calls mountain surfing: fast runs along a hill contour, dropping toward a river valley far from the takeoff point. While it flies, the goggles feed carries speed, altitude, voltage and distance from home, and a GPS receiver keeps position data reachable through the goggles, with the satellite count sitting around 28 on this outing.
The hardware is worth a look. The quad weighs 446g without the battery, running a Gaoneng LIHV 1500mAh pack and a Jumper T20s radio. On this flight it was about 2 kilometers from the start when the pack died suddenly. Voltage read 21V at that point, which works out to 3.5V per cell, and it had already touched 22V just ninety seconds in. The descent from over 350 meters pushed past 110 km/h, and the whole flight lasted around 4 minutes.
The recovery attempt is the part that stings. The maker spent an hour hunting the crash area, under pressure from a waiting tour bus the whole time, and the goggles refused to reconnect afterward, so the stored GPS position could not be used. Low battery warnings had popped up on screen right as voltage sagged near the ground.
The open ends are clear: the radio was checked over USB and its internal storage held no telemetry log at all, and the maker still needs to figure out how to set logging up. The OSD also never displayed GPS coordinates, something the maker says would have saved the aircraft. A lighter next 5-inch build is planned, with Li-ion packs on the table. To my eye, the missing coordinates on screen look like the single change with the biggest payoff here.