Happymodel Mobula6 Freestyle HD

The heart of the build is the HDZero AIO5, the first single-board whoop flight controller to integrate an HDZero digital VTX, SPI ELRS 2.4GHz receiver, 4-in-1 ESC, and 5V BEC. It pairs with the RunCam HDZero Lux camera on a fixed 25-degree mount, sending 720p HD over a single composite wire instead of a fragile MIPI ribbon cable — a durability win in a crash-prone class, alongside the elimination of the two-board stack.

The Lux is the image-quality pick of the AIO5 camera pair: a 1/2-inch sensor with WDR, 1080p-to-720p oversampling, strong low-light performance, and a large 94-degree vertical FOV in 4:3 at 720p60. Native HDZero video is near-zero latency and plug-and-play with HDZero BoxPro+ goggles — no module or adapter needed — with VTX output selectable between 25mW and 200mW. The VTX keeps transmitting down to 2.5V, so video holds on until the motors quit at the end of a pack.

At 19.6g bare it was the first sub-20g digital HD whoop — far lighter than earlier ~25g HDZero whoop conversions, so it flies much closer to an analog-weight 65mm quad. It's built for indoor and calm-weather proximity and freestyle: wind pushes a 65mm 1S whoop around, and Happymodel's own flight-time figure is around 3 minutes on the recommended 1S 300mAh, since the HD VTX draws more power than an analog setup in this class.

It ships flight-ready — Bluejay ESC firmware preinstalled, a Betaflight 4.4.2 factory tune with a published dump file for easy restore, and a spare canopy and props in the box. Within the lineup, the sibling Race HD swaps in the lighter, cheaper Eco camera on a 20-degree mount; the Freestyle HD's Lux is the stronger low-light camera of the two.