Output Signals
Magic Box outputs RC signals four ways. Pick the one your radio, radio module, or RC chain wants:
| Protocol | Type | Connection | Best for | Details |
|---|---|---|---|---|
| PPM | Analog | 3.5 mm jack | Classic radios, trainer ports, basic radio modules | PPM |
| SBUS | Digital | UART (inverted) | Most modern receivers and flight controllers | SBUS |
| IBUS | Digital | UART | FlySky receivers, some FCs | IBUS |
| CRSF | Digital | UART (non-inverted) | ExpressLRS / Crossfire long-range, low-latency | CRSF |
Where to start
Section titled “Where to start”Most pilots wire a TX module straight to Magic Box and run an RC link from there to a receiver in the model. That’s the base setup, and it’s the same regardless of which protocol you end up choosing — pin layouts, cable vs solder pads, power options. Read that first:
- Wiring & External TX Modules — module pinout examples (Bandit Micro, Ghost JR, Flysky FRM303), stereo cable vs solder pads, power options. Covers PPM-input modules too.
If you’re not using an external TX module — say you’re plugging Magic Box into a classic radio’s trainer port, or driving a sim training rig with a receiver on the bench — the protocol pages stand on their own.
Protocol details
Section titled “Protocol details”Once you know how you’re wiring it up, pick the protocol your downstream gear wants:
- PPM (analog) — trainer ports, jack polarity, PPM-input modules.
- SBUS (digital UART) — the digital default for most modern receivers and flight controllers. Includes an iNav receiver-tab walk-through for verifying the chain.
- IBUS (digital UART) — FlySky’s serial protocol.
- CRSF (ExpressLRS / Crossfire) — hardware compatibility per Magic Box revision, aux-channel resolution caveats, when to use it vs SBUS.