Dragonfly - Extension: Hip

➕ Dragonfly – Extension: Waist

Already own the main Cave Slime Dragonfly set and want to improve spine and hip articulation? This extension pack adds one full-fledged tracker for your waist – with no need for an additional USB dongle. Pair it with your existing set to unlock perfectly natural sitting postures, bending, and hip movement.

• ✅ No Extra Dongle: Connects directly to your existing Dragonfly USB receiver – no extra network setup.
• ✅ Long Waist Strap: Comfortable elastic strap with broad adjustment range (custom lengths available upon request).
• ✅ Instant Expansion: Plug & Play addition for even more precise and fluid torso tracking.

📦 Package Contents

This compact pack includes everything required for immediate setup on your waist or hips:

• ✅ Included: 1× main Cave Slime Dragonfly unit.
• ✅ Included: 1× long comfortable elastic waist strap.
• ✅ Included: 1× plastic tracker holder.
• 🏷️ Sticker: For clear and easy tracker identification on your body.

🎯 ICM-45686 Sensor: Surgical Precision

Just like the entire Dragonfly lineup, this extension relies on the top-tier ICM-45686 sensor from TDK InvenSense. It delivers minimal drift, ultra-low noise, and rock-solid stability during every bend, squat, or dance move.

• 🎯 Surgical Precision: Smooth and reliable tracking of waist rotation and tilt.
• 🛠️ 6-Axis Factory Calibration: I carefully test and calibrate each unit on 6 axes before shipping.
• 🔋 Energy Efficient: Low sensor power consumption combined with radio transmission saves battery life.

🧲 Optional Magnetometer Wiring

As part of custom manufacturing, I offer the option to have the magnetometer circuit physically connected or disconnected. Before choosing the upgrade, please consider the essential differences:

• 🟢 Disconnected (standard mode, recommended): Maximum battery life per charge (~50 hours). The tracker performs reliably with standard motion sensors and is entirely immune to magnetic interference in your room. I recommend this option for the vast majority of users.
• ⚙️ Connected (requires tuning, half battery life): Hardware-activated magnetometer support offers yaw drift compensation, but comes with strict limitations:

• 🧭 Effective only in magnetically clean environments: The magnetometer assists with rotation drift using Earth's magnetic field. However, it is beneficial only in a completely magnetically clean environment. In an everyday play area with magnetic interference (speakers, subwoofers, nearby power banks, wireless chargers, bundled power cords, or motorized desks), tracking can actually become unstable and perform worse than without it.
• 🔋 Permanently reduced battery life: Physical circuit wiring reduces battery life by approximately 50% (~30 hours of operation), even if you subsequently disable the magnetometer in the software or console.
• 🛠️ Requires precise calibration: Proper operation requires thorough calibration in an interference-free space and manual fine-tuning in software.

⚠️ Connecting the magnetometer is strictly recommended for experienced users and enthusiasts who have an interference-free room, enjoy fine-tuning their setup, and accept the reduced battery life.

🎮 Compatibility & Use Cases

The waist extension integrates seamlessly into your existing SlimeVR setup and is supported across all major VR applications and headsets:

• 🌐 Apps & Games: VRChat, Resonite, ChilloutVR, Dance Dash, NeosVR, Virtual Motion Capture (VMC), and VTubing software.
• 🥽 Supported Headsets: Meta Quest 2 / 3 / Pro, Pico 4, Valve Index, HTC Vive, and other PCVR and standalone headsets (via SteamVR, Virtual Desktop, or Link).
• 💃 Why Add a Waist Tracker: Decouples chest from hip motion, preventing avatar deformation during sitting, crouching, and dancing.

⚙️ Setup, Comfort & Maker Support

I ensure that wearing and using the waist tracker is comfortable even during extended gaming and dance sessions:

• 🖥️ SlimeVR Server: Pairing with your existing USB dongle takes only a few seconds in the SlimeVR Server application.
• 🧵 Ergonomics & Straps: Wide elastic strap hugs your waist snugly without pinching. The tracker itself weighs only 17 g, making it barely noticeable while moving.
• 🛠️ Durable Build & Support: Tough PETG enclosures stand up to intense motion. As a maker, I offer direct customer support, repair services, and spare parts.

❓ Frequently Asked Questions (FAQ)

📊 Technical Specifications

I manufacture the tracker enclosures myself using 3D printing with high-grade PETG material. Custom color options are available upon request.