Receivers (VRX)
Ready-made Solutions
RunCam WiFiLink‑RX
Ready ground station: Radxa + 2×EU2 boards. Connects to goggles or a monitor via HDMI.
- Buy: shop.runcam.com
- Minimal latency
- Plug & Play solution
PixelPilot (Android)
Turns an Android smartphone into a ground station with an RTL8812AU WiFi adapter.
- Download: GitHub releases
- Latency: ~50–70 ms (depends on phone performance)
- Pros: cheap, convenient, always with you
- Cons: higher latency, depends on the smartphone
DIY: Radxa Zero 3W Ground Station
A full-featured ground station built yourself.
Components
| Component | Link | Note |
|---|---|---|
| Radxa Zero 3W | allnetchina.cn | 2 GB, no eMMC, with header |
| RTL8812AU (×2) | AliExpress | 3.3V, up to 40 MHz |
| RTL8812EU2 (×2) | AliExpress | 5V, more powerful |
| USB HAT/hub | AliExpress | For RTL8812EU2 |
| microSD ≥ 64 GB | Samsung Evo Plus | Image ~1.5 GB |
| 25×25 mm fans | AliExpress | For cooling |
| 4 antennas | — | 2 directional + 2 patch |
Ready Build Options
Option 1: USB‑HAT + 2×RTL8812AU → 227 g without antennas
Option 2: USB‑hub + 2×RTL8812EU → 105 g without antennas (more compact)
3D case model: thingiverse.com