DeepSpace Stellar 25 H7 O4 Pro - 4S ELRS with GPS

DeepSpace Stellar 25 H7 O4 Pro is a compact 2.5" cinewhoop with DJI O4 Pro digital video transmission, suitable for cinematic indoor flying, filming in the forest or park, and smooth tracking shots. It has integrated propeller guards and measures 156x163mm, fitting in the palm of your hand, making it relatively safe to fly even in smaller spaces. The version with an ELRS receiver and GPS module weighs 188g without a battery.

The Stellar 25 frame has a diagonal motor-to-motor distance of 116mm and a 2.5mm thick carbon main plate. The propeller guards are injection-molded from a single piece of plastic, making them durable. The DJI O4 Pro unit is mounted at the bottom center of the frame, aligned with the battery. This places the center of gravity in the middle of the drone, contributing to stable and smooth flight. The camera is held by CNC aluminum side plates that protect the lens in a crash. Vibration-isolated mounting reduces the “jello” effect in the image. The receiver has its own dedicated bay, so replacement or maintenance does not require disassembling the drone. The microSD card slot is easily accessible. The rear USB-C port allows flight controller setup and firmware updates without disassembly. The XT30 connector is securely mounted at the rear of the frame.

Flight control is handled by the DeepSpace DSH743AIO AIO board, which integrates the flight controller and four ESCs. The flight controller uses an STM32H743 processor, ICM42688-P gyro, barometer for altitude measurement, and 16MB blackbox memory. Dual BECs provide 9V/2A and 5V/2A for the video unit and peripherals. The drone is equipped with an ELRS receiver on the 2.4GHz frequency. A GPS module with a 10th-generation chip is positioned at the front above the camera. It is farther from the video transmitter, experiences less interference, and acquires satellites quickly. It enables automatic return to the takeoff point and displays speed, distance, and direction to the takeoff point in the OSD. The ESCs are rated at 40A and run AM32 firmware. Power is provided by DeepSpace Aether 1404 4600Kv motors combined with 2.5" tri-blade propellers. According to the manufacturer, the motors are tuned for longer flight time and smooth filming.

Digital video transmission is provided by DJI O4 Pro with a 1/1.3" sensor and 155° field of view. It enables recording at up to 4K/120fps to a microSD card, so there is no need to carry an external HD camera. Racemode with low latency is available for racing pilots. The transmission supports Canvas mode for classic OSD from the flight controller. Image stabilization is available immediately with DJI RockSteady or later with Gyroflow.

The video unit is designed for use with DJI Goggles 3 or DJI Goggles N3 and DJI Controller 3. The unit can also be used with DJI Goggles 2 or DJI Integra and DJI Controller 2. However, Racemode is not available in this case, and the maximum bitrate is limited to 50 Mbps.

Recommended batteries are 4S LiPo/LiHV with a capacity of 720-1100mAh and an XT30 connector. Batteries are not included. 

Important notice: The DJI O4 camera uses a new generation of gyroscopes that are more sensitive to vibrations. This may affect the proper operation of RockSteady and Gyroflow stabilization.